| Entries |
| Document | Title | Date |
|---|
| 20100157010 | LIGHT-EMITTING ELEMENT HEAD, IMAGE FORMING APPARATUS AND LIGHT-EMISSION CONTROL METHOD - A light-emitting element head includes: plural light-emitting element array chips that are divided into plural groups and that each are provided with light-emitting elements arranged in an array; a signal generation unit that generates a light-emission control signal for controlling blinking of the light-emitting elements, and an identification signal for identifying which of the light-emitting element array chips in each of the groups the light-emission control signal is for; signal lines through which the light-emission control signal and the identification signal are transmitted; and identification signal discrimination units that are connected to the signal lines and that are provided in the respective light-emitting element array chips, each of the identification signal discrimination units discriminating the identification signal, and transmitting the light-emission control signal to the light-emitting elements. | 06-24-2010 |
| 20130044177 | SURFACE-EMITTING LASER DEVICE AND SURFACE-EMITTING LASER ARRAY INCLUDING SAME - A surface-emitting laser device is disclosed that includes a substrate connected to a heat sink; a first reflective layer formed of a semiconductor distributed Bragg reflector on the substrate; a first cavity spacer layer formed in contact with the first reflective layer; an active layer formed in contact with the first cavity spacer layer; a second cavity spacer layer formed in contact with the active layer; and a second reflective layer formed of a semiconductor distributed Bragg reflector in contact with the second cavity spacer layer. The first cavity spacer layer includes a semiconductor material having a thermal conductivity greater than the thermal conductivity of a semiconductor material forming the second cavity spacer layer. | 02-21-2013 |
| 20130083148 | OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - An optical scanning device including multiple light sources to emit multiple light beams for scanning different scanning surfaces; a light deflector having multiple reflection/deflection surfaces rotating in the main scanning direction to reflect and deflect the light beams such that at least two light beams are deflected by same one of the reflection/deflection surfaces at different angles in a sub-scanning direction relative to the normal line of the reflection/deflection surface; and a scanning lens to focus the deflected light beams on the scanning surfaces. At least one surface of the scanning lens has multiple refracting surfaces arranged side by side in the sub-scanning direction, and each of the refracting surfaces has a positive refracting power in the sub-scanning direction, and vertices of the refracting surfaces are shifted in the sub-scanning direction from intersections of the light beams with the refracting surfaces toward the center of the scanning lens. | 04-04-2013 |
| 20100060709 | LINE LIGHT SOURCE, LINE PRINTER HEAD, AND IMAGE FORMING APPARATUS INCLUDING THE LINE PRINTER HEAD - Disclosed are a line light source, a line printer head, and an image forming apparatus. The line light source includes a light waveguide unit which guides light emitted from a light emitting layer which is disposed between a bottom electrode and top electrodes, wherein the light waveguide unit is disposed on the top electrodes. Light is emitted through the surface area of light emitting areas defined by overlapping areas of the bottom electrode and the top electrodes. The light waveguide includes a plurality of openings, the sizes of which may be different than the surface area of the light emitting areas. The light emitting amount can be adjusted by adjusting the light emitting surface areas without reducing printing resolution of the image forming apparatus by employing the disclosed line light source as the line printer head. | 03-11-2010 |
| 20110193929 | METHOD AND APPARATUS FOR RELIABLY LASER MARKING ARTICLES - The invention is a method and apparatus for creating marks on an anodized aluminum specimen with selectable color and optical density. The method includes providing a laser marking system having a laser, laser optics and a controller operatively connected to said laser to control laser pulse parameters. The laser marking system is directed to produce laser pulses having laser pulse parameters associated with the desired color and optical density in the presence of a fluid directed to the surface of the anodized aluminum specimen while marking. | 08-11-2011 |
| 20110193928 | METHOD AND APPARATUS FOR RELIABLY LASER MARKING ARTICLES - Disclosed is a method for creating a mark desired properties on an anodized specimen and the mark itself. The method includes providing a laser marking system having a controllable laser pulse parameters, determining the laser pulse parameters associated with the desired properties and directing the laser marking system to mark the article using the selected laser pulse parameters. Laser marks so made have optical density that ranges from transparent to opaque, white color, texture indistinguishable from the surrounding article and durable, substantially intact anodization. The anodization may also be dyed and optionally bleached to create other colors. | 08-11-2011 |
| 20130076850 | IMAGE-FORMING DEVICE AND LIGHT SCANNING DEVICE - An image-forming device is provided with a shutter member that has a ventilation passage formed extending therethrough in a main scanning direction, the shutter member adapted to slide over the outside surface of the housing in a secondary scanning direction, a cover member adapted to open or close an interior of a chassis of the device. The shutter member, when the cover member is moved in a direction to open up the inside of the device chassis, is moved in a direction to shut an output window, and when the cover member is moved in a direction to close up the inside of the device chassis, is moved in a direction to open the output window. In association with movement of the shutter member towards the open direction, the ventilation passage faces a ventilation opening of a duct furnished to the device chassis. | 03-28-2013 |
| 20130076851 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device scanning scan target surfaces in a first direction with light includes: a light source emitting first and second light beams corresponding to two of the scan target surfaces; an optical deflector including a reflection surface on which the emitted first and second light beams are obliquely incident while being separated from each other in a second direction perpendicular to the first direction, and deflecting the first and second light beams; a scanning lens disposed on respective optical paths of the deflected first and second light beams; and a branching optical element transmitting therethrough most of the first light beam transmitted through the scanning lens, and reflecting most of the second light beam transmitted through the scanning lens. The deflected first and second light beams intersect between the optical deflector and the branching optical element, when projected on a plane perpendicular to the first direction. | 03-28-2013 |
| 20130033559 | SURFACE-EMITTING LASER DEVICE, OPTICAL SCANNER DEVICE, AND IMAGE FORMING APPARATUS - A surface-emitting laser device includes a lower reflector, a resonator structure having an active layer and an upper reflector on an inclined substrate, and an emission region emitting laser light enclosed by an electrode. The upper reflector includes a confinement structure having a current passing region enclosed by an oxide containing at least an oxide generated as a result of partial oxidation of a layer containing aluminum subject to selective oxidation, and a dielectric film formed within the emission region, the dielectric film at least enclosing a partial region including a center of the emission region. In viewing from a direction orthogonal to the emission region, a center of a region enclosed by the dielectric film is located at a position distant from the center of the emission region based on a size of the confinement structure relative to a direction orthogonal to an inclined axis of the inclined substrate. | 02-07-2013 |
| 20130033557 | LIGHT SCANNING UNIT AND IMAGE FORMING APPARATUS EMPLOYING THE SAME - A light scanning unit and an image forming apparatus employing the same. The light scanning unit deflects light in a main scanning direction, irradiates the light on a photoconductive drum, and includes a beam detecting sensor to detect a horizontal synchronization signal by receiving a part of the light beam reflected and scanned by a beam deflector, and leads of terminals of the beam detecting sensor are not exposed to the light beam to be scanned. | 02-07-2013 |
| 20130033558 | OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND OPTICAL SCANNING DEVICE DESIGNING METHOD - An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%. | 02-07-2013 |
| 20100110159 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device having a recessed part which is located at a backward end with respect to a home-position of an image reading unit and extending downwardly with respect to a flat surface. When the image reading unit is located in the home-position, the recessed part receives a bent part of a flexible flat cable. With the image reading device, an upward pushing force applied to the image reading unit because of a repulsive force generated by the flexible flat cable trying to straighten itself is reduced. | 05-06-2010 |
| 20130135423 | LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A light scanning apparatus configured to irradiate a surface to be scanned with a light beam, including: a light source configured to emit the light beam; a deflector configured to deflect the light beam to scan the surface; an optical element configured to lead the light beam to the surface; a housing configured to hold the light source, the deflector, and the optical element, and including fibers; and a rib formed integrally with a bottom portion of the housing on which the deflector and the optical element are disposed, the rib standing on the bottom portion between the deflector and the optical element to suppress a deformation of the housing in a scanning direction, wherein the fibers of the rib are oriented along the scanning direction, and the fibers of the bottom portion are oriented along the bottom portion and in a direction perpendicular to the scanning direction. | 05-30-2013 |
| 20110193930 | ENCODER SENSOR AND IMAGE FORMING APPARATUS INCLUDING THE ENCODER SENSOR - An encoder sensor for reading plural slits of an encoder scale includes a light emitting part configured to emit light and a light receiving part configured to receive the light emitted from the light emitting part. The light emitting part is configured to emit the light from plural areas arranged in a direction orthogonal to a direction in which the plural slits are arranged. | 08-11-2011 |
| 20130135422 | IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM - An image processing apparatus includes an exposure unit to expose a photoconductor to form an electrostatic latent image on the photoconductor; a development unit to develop the electrostatic latent image on the photoconductor as a toner image using toner; and an exposure power controller to control exposure power of the exposure unit depending on a printing mode, including a normal printing mode and a toner-save printing mode in which less toner is consumed than in the normal printing mode. The exposure power controller decreases the exposure power of the exposure unit for the toner-save printing mode compared to the exposure power of the exposure unit for the normal printing mode. | 05-30-2013 |
| 20130135421 | POLYGON MOTOR UNIT, AND OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS WITH SAME - A polygon motor unit is mounted in a housing and includes a polygon mirror, a polygon motor, a board, a thermally conductive member and an elastic member. The polygon mirror is rotated and deflects light. The polygon motor includes a shaft portion and rotates the polygon mirror. The board includes a first surface and a second surface opposite to the first surface, and the polygon mirror and the polygon motor are mounted on the first surface. The thermally conductive member includes a positioning portion for setting a reference position, a third surface facing the second surface and a projection projecting from the third surface toward the second surface and configured to position the board with respect to the reference position by coming into contact with the second surface. The elastic member is made of a thermally conductive material and arranged between the second surface and the third surface. | 05-30-2013 |
| 20130135420 | OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS WITH OPTICAL SCANNING DEVICE AND ABNORMALITY DETECTION METHOD FOR OPTICAL SCANNING DEVICE - An optical scanning device includes a light emitter, a scanner, a first detector and a determiner. The light emitter outputs a beam. The scanner scans within a given area determined in advance with the beam output from the light emitter. The first detector is arranged on an optical path of the beam in the given area and detects the light quantity of the beam. The determiner determines light quantity shortage of the light beam if the light quantity detected by the first detector is below a first threshold set in advance and above a second threshold indicating a light quantity smaller than the first threshold and determines an abnormality in a scanning operation by the scanner or an abnormality of the light emitter if the light quantity detected by the first detector is below the second threshold. | 05-30-2013 |
| 20130027499 | IMAGE FORMING APPARATUS AND METHOD FOR ADJUSTING ROTATIONAL PHASE DIFFERENCE OF ROTATING POLYGON MIRROR - An image forming apparatus includes a correction control unit and a correction amount adjusting unit. The correction control unit performs a phase correction process of changing a drive frequency of a driver for driving and rotating a rotating polygon mirror having a rotational phase difference judged not to coincide by a predetermined correction amount and driving the driver for a period corresponding to a specified clock number by a drive clock signal of the changed drive frequency if a rotational phase difference of another rotating polygon mirror does not coincide with a reference rotational phase difference. The correction amount adjusting unit reduces the predetermined correction amount by a predetermined specified amount and causes the correction control unit to perform the phase correction process again if the rotational phase difference does not coincide with a reference rotational phase difference after the phase correction process is performed. | 01-31-2013 |
| 20130027498 | IMAGE FORMING APPARATUS - An image forming apparatus, including: an image bearing member; a latent image forming unit configured to emit a light beam based on image data and to form an electrostatic latent image on the image bearing member by the light beam; a placement unit provided in a main body of the image forming apparatus, on which the latent image forming unit is placed; an elastic member disposed between the latent image forming unit and the placement unit; and a pressing unit provided in the main body of the image forming apparatus and configured to press the latent image forming unit toward the placement unit so that the elastic member is pressed by the latent image forming unit and the placement unit. | 01-31-2013 |
| 20120182373 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device for an image forming apparatus includes plurality light sources, a deflecting unit that deflects light beams from the light sources with a common deflecting reflection surface, a scanning optical system that guides the light beams deflected from the common deflecting reflection surface of the deflecting unit onto the optical scanning portions on stations different for each light source in order to form an optical spot with each light beam, monitoring units that monitor light intensities of the light beams from the light sources, and a splitting unit that splits each light beam into a split light beam toward one monitoring unit. The light beams enter the monitoring unit at different timings and enter the deflecting unit at different incident angles. | 07-19-2012 |
| 20120182372 | OPTICAL SCANNING DEVICE INCLUDING PLURAL LENSES AND IMAGE FORMING APPARATUS - According to one embodiment, an optical scanning device includes plural light sources, a polygon mirror, a first lens, a first reflection mirror, and a second lens. The polygon mirror deflects lights emitted from the plural light sources in a predetermined direction. The first lens allows the lights emitted from the plural light sources and deflected by the polygon mirror to pass. The first reflection mirror reflects the lights passed through the first lens in a direction different from the deflecting direction of the polygon mirror. The second lens receives incidence of the lights reflected by the first reflection mirror from a direction different from an incident direction of the first lens and allows, with one lens, the lights emitted from the plural light sources to pass. | 07-19-2012 |
| 20120182371 | OPTICAL WRITING HEAD AND IMAGE FORMING APPARATUS - An optical writing head allows the formation of a light collective spot with a small diameter and the acquisition of a deep focal depth to go together. An optical writing head includes a light emitting element array in which a plurality of light emitting elements is arranged, and a lens system including a lens array configured to concentrate luminous flux radiated from the light emitting element to a predetermined image plane, in which the lens system is telecentric on the image side and satisfies the following conditional expression, where a wavelength at which luminous flux radiated from the light emitting element has a peak light intensity is λ | 07-19-2012 |
| 20120182370 | LENS HOLDING UNIT, OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - According to one embodiment, a lens holding unit includes a laser diode to irradiate laser beam, a lens through which the laser beam passes, a sheet metal having a bottom surface to hold a bottom portion of the lens and a sidewall which uprises from the bottom surface at a right angle and holds a side portion of the lens, and a first resin member fixed to the bottom surface of the sheet metal to hold a side portion at the other side of the lens which is held on the sheet metal. | 07-19-2012 |
| 20130070040 | EXPOSURE CONTROL APPARATUS, IMAGE FORMING APPARATUS, AND EXPOSURE CONTROL METHOD - An exposure control apparatus includes: a plurality of line memories; a processing unit that processes image data by successively recording the image data to the plurality of line memories, and successively reading the image data from the plurality of line memories; and an exposing unit that performs, with an exposure cycle, an exposure process according to the processed image data, and that forms a latent image based on the image data onto an image carrier, wherein the image data is transferred with a cycle which is N times as high as the exposure cycle (N is a natural number), and the processing unit reads the image data N times with the exposure cycle. | 03-21-2013 |
| 20130070039 | SURFACE-EMITTING LASER DEVICE, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER, IMAGE FORMING APPARATUS, AND METHOD FOR MANUFACTURING SURFACE-EMITTING LASER DEVICE - A surface-emitting laser device includes a transparent dielectric layer provided in an emitting region and configured to cause a reflectance at a peripheral part to be different from a reflectance at a central part in the emitting region. In the surface-emitting laser device, the thickness of a contact layer is different between a region having a relatively high reflectance and a region having a relatively low reflectance in the emitting region. The contact layer is provided on the high refractive index layer of an upper multilayer film reflecting mirror, and the total optical thickness of the high refractive index layer and the contact layer in the region having the relatively low reflectance is deviated from an odd number multiple of a one quarter oscillation wavelength of laser light emitted from the emitting region. | 03-21-2013 |
| 20130070038 | INTEGRAL CUSHION FOR FLEXOGRAPHIC PRINTING PLATES - A system for preparing a flexographic printing plate having a printing layer, a second layer, and a cushion layer includes a first laser for imaging a first zone on a bottom surface of the cushion layer; and wherein the first laser or a second laser images a first area of a top surface of the printing layer which corresponds to the first zone. | 03-21-2013 |
| 20130050387 | DEFLECTION SCANNER - The present invention provides an optical scanning apparatus which includes first and second light sources, a deflection scanning device, and first and second scanning optical systems that guides the first and second laser beams deflected for scanning by the deflection scanning device, wherein the first and second scanning optical systems include scanning lenses, and a polarization beam splitter arranged in a downstream side of an optical path of the scanning lens, wherein the first scanning optical system includes a half-wave plate arranged in the downstream side of the optical path of the scanning lens and in an upstream side of an optical path of the polarization beam splitter, wherein the first laser beam and the second laser beam before being incident on the first and second scanning optical systems have different phases by 180 degrees from each other. | 02-28-2013 |
| 20130050388 | IMAGE FORMING APPARATUS - An image forming apparatus includes a pulse width modulation unit that changes pulse width of a signal in accordance with image data, and an image forming unit that forms an image by a driving laser beam with a signal whose pulse width has been modulated by the pulse width modulation unit and scanning a photosensitive body, and corrects the pulse width of the signal output by the pulse width modulation unit in accordance with a density unevenness characteristics in the main scanning direction of the image forming unit. | 02-28-2013 |
| 20100134586 | Exposure Head and Image Forming Apparatus - An exposure head and an image forming apparatus are provided. The exposure head includes: a lens array which has a first light transmissive substrate and a lens disposed on the first light transmissive substrate; a second light transmissive substrate; a light emitting element which is disposed on the second light transmissive substrate and emits light for transmitting the second light transmissive substrate to form an image through the lens; and a support member which supports a surface of the first light transmissive substrate on which the lens is disposed and a surface of the second light transmissive substrate on which the light emitting element is disposed. | 06-03-2010 |
| 20130088558 | OPTICAL PRINT HEAD AND IMAGE FORMING APPARATUS - An optical print head having a substrate on which multiple light sources aligned in a main scanning direction are mounted to emit beams of light in a direction perpendicular to a surface of the substrate; a lens array to focus the beams of light on an image bearing member to form an image thereon; a housing having a guiding portion extending in the main scanning direction to position the substrate and the lens array; a cleaner to clean a light-emitting surface of the lens array while moving in the main scanning direction; a moving device to move the cleaner; and a supporting member to support the housing and the cleaner. The supporting member rotatably supports the cleaner about a shaft and the guiding portion contacts the cleaner against the light-emitting surface of the lens array with a constant force over the main scanning direction during cleaning of the light-emitting surface. | 04-11-2013 |
| 20120218370 | OPTICAL DEVICE, OPTICAL MEMBER AND IMAGE FORMING APPARATUS WITH THE SAME - An optical device includes a laser light source for outputting a laser beam; an optical member including an aspherical lens with an incident surface on which the laser beam is incident and an output surface from which the laser beam is output, and adapted to scan the laser beam output from the output surface across a predetermined target; and a housing for housing the optical member. The optical member further includes a first positioning portion at a side of the incident surface and a second positioning portion at a side of the output surface. The housing includes a first engaging portion to be engaged with the first positioning portion and a second engaging portion to be engaged with the second positioning portion. The first and second positioning portions have mutually different shapes. | 08-30-2012 |
| 20100097436 | METHOD FOR PROVIDING A PLURALITY OF LASER-PRINTED LABELS FROM A MEDIUM SUPPORTED ON A DISC - A method of printing labels includes supporting a laser sensitive material on a disc and printing label images on the disc with a modulated focused beam from a diode-laser. The label images may be printed in regions of the medium having pre-cut label boundaries. Alternatively, label boundaries may be cut through the medium using the focused laser beam. The labels are peeled from the disc after printing. | 04-22-2010 |
| 20090251524 | PULSED LASER MODE FOR WRITING LABELS - An apparatus and a method for writing a label on a surface of an object, such as on the top surface of an optical disk (CD, DVD, Blu Ray etc.) are disclosed. The label is written by using the laser in the optical pickup unit of the disk device. The laser light is emitted as a pulse train in order to reduce the thermal load on the laser. The pulse train is provided by controlling the supply current of the laser, and the radiation power of the laser is reduced to zero between two successive sub-pulses of the pulse train by turning off the laser between successive sub-pulses. | 10-08-2009 |
| 20110050835 | EXPOSURE HEAD AND IMAGE FORMING APPARATUS - An exposure head includes: a light emitting element substrate in which light emitting elements are arranged in a first direction; first lens arrays with first lenses, to which the light from the light emitting elements is incident, arranged thereon; second lens arrays with second lenses, to which the light emitting from the first lenses is incident, and each of which constitutes with each of the first lenses an optical system whose absolute value of a lateral magnification is less than one, arranged thereon; first spacers which are arranged on the light emitting element substrate and support the first lens arrays; and second spacers which are arranged on the first lens arrays so as to be in different positions from those of the first spacers when seen from an optical axis direction of the optical system and support the second lens arrays. | 03-03-2011 |
| 20110128344 | IMAGE FORMING APPARATUS - An image forming apparatus includes a plurality of light sources that emits a plurality of light beams arrayed in the sub-scanning direction via an optical system, a filter calculation unit that performs filter calculation of increasing or reducing a density of image data according to wideness or narrowness between a plurality of scanning lines formed on a photosensitive member when the light beams from the plurality of light sources are scanned on the photosensitive member, and a drive circuit that causes light beam emission from the plurality of light sources based on the image data that has undergone the filter calculation by the filter calculation unit. | 06-02-2011 |
| 20090309952 | LIGHT SOURCE APPARATUS, AND OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME - A disclosed light source apparatus includes a light source including multiple light emitting devices; an optical element configured to transmit light emitted from the light source; a tube configured to hold the optical element; and a tube holder configured to fix the tube by holding an end of the tube close to the light source or by holding the end of the tube on the light emission side away from the light source. A positional displacement preventing member is provided at the other end of the tube on a light emission side away from the light source in such a manner as to be slidable on the tube in the direction of an optical axis and prevent positional displacement of the tube in all directions perpendicular to the optical axis. | 12-17-2009 |
| 20110298884 | IMAGE FORMING APPARATUS - An image forming apparatus capable of reducing density variation that occurs in an output image when the rotational speed of a polygon mirror is changed. A light source emits a light beam for forming an electrostatic latent image on a photosensitive drum. The polygon mirror deflects the light beam such that the light beam moves on the photosensitive drum in a predetermined direction. A polygon mirror control circuit controls the polygon mirror such that when the toner image is to be formed at a first magnification, the rotational speed of the polygon mirror is made higher than when the toner image is to be formed at a second magnification that is larger than the first magnification. When the toner image is to be formed at the first magnification, the light beam becomes smaller in light amount than when the toner image is to be formed at the second magnification. | 12-08-2011 |
| 20110316959 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device, arranged on one side of at least two to-be-scanned members in a second direction, and the two to-be-scanned members being arranged in a first direction perpendicular to the second, includes: an illuminating system that emits beams including a first beam and a second beam whose polarization directions are different from each other; an optical deflector that deflects the beams; and a scanning optical system that includes a polarization separation element that transmits one of the first and second beams and reflects the other; a first mirror group including reflecting mirrors for guiding the first beam to a to-be-scanned member; and a second mirror group including reflecting mirrors for guiding the second beam to a to-be-scanned member. Last-stage reflecting mirrors in the first and second mirror groups are arranged on one side of the beams deflected by the optical deflector in the second direction. | 12-29-2011 |
| 20110298883 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photoconductor, a charger to charge the photoconductor, a multi-beam scanning unit, a development unit, and a transfer unit. The multi-beam scanning unit includes a vertical cavity surface emitting laser as a light source having light emitting elements arrayed in main and sub-scanning directions by setting an interval between light emitting elements adjacently disposed at a center portion of the scanning unit in the sub-scanning direction narrower than an interval between other light emitting elements adjacently disposed at other portions of the scanning unit in the sub-scanning direction, a deflecting element to deflect light emitted from the light emitting elements to scan the surface of photoconductor by an interlace scan, and a light intensity adjustment unit to adjust light intensity of the light emitting elements adjacently disposed at the center portion relative to a light intensity of other light emitting elements adjacently disposed at other portions. | 12-08-2011 |
| 20110285804 | IMAGE FORMING APPARATUS - Disclosed is an image forming apparatus that makes it possible to cope with the deviations in the main-scanning direction when the image forming velocity has been changed. The apparatus includes: a light source; a polygon mirror; a start-position light detecting section to detect a light beam at a main-scanning start point; a stop-position light detecting section to detect the light beam at a main-scanning stop point; a measuring section to measure a time difference between times when the start-position light detecting section and the stop-position light detecting section detect the light beam; a magnification correction data creating section to create magnification correction data for every rotation number of the polygon mirror, based on the main-scanning time; and a magnification factor correcting section to adjust interval distances between positions of exposed dots so as to correct the magnification factor in the main-scanning direction by using the magnification correction data. | 11-24-2011 |
| 20110292156 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - An optical scanning apparatus includes a housing, light source, deflector, imaging lens, reflective mirrors, a synchronization detector and synchronization detection mirror. The housing has a plate to partition the housing. The deflector deflects a light beam emitted from the light source. The imaging lens converts the deflected light beam into a constant speed scanning light beam. The reflective mirrors reflect the constant speed scanning light beam to a photoreceptor. The synchronization detector detects timing for starting scanning of the photoreceptor. The synchronization detection mirror reflects the light beam to the synchronization detector. At least one of the reflective mirrors is disposed midway in a synchronization detection light path extending from the deflector to the synchronization detection mirror. The light beam reflected by the synchronization detection mirror is reflected again by at least one of the reflective mirrors, such that the light beam is guided to the synchronization detector. | 12-01-2011 |
| 20090295902 | SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNING DEVICE, AND IMAGE FORMING DEVICE - A surface-emitting laser array includes a plurality of surface-emitting laser elements. Each surface-emitting laser element includes a first reflection layer formed on a substrate, a resonator formed in contact with the first reflection layer and containing an active layer, and a second reflection layer formed over the first reflection layer and in contact with the resonator. The second reflection layer contains a selective oxidation layer. The first reflection layer contains on the active layer side at least a low refractive index layer having an oxidation rate equivalent to or larger than an oxidation rate of a selective oxidation layer contained in the second reflection layer. The resonator is made of an AlGaInPAs base material containing at least In. A bottom of a mesa structure is located under the selective oxidation layer and over the first reflection layer. | 12-03-2009 |
| 20090079809 | System and Method for Film Watermarking - A system and method for watermarking a film includes a light source array including one or more light sources having light directed toward a film to be watermarked. A control mechanism is configured to synchronize a position of the film with the light sources such that the light sources are activated to record a watermark on the film to identify an aspect of the film, wherein the watermark includes a plurality of spots aligned transversely to a direction of film motion during printing of the film. | 03-26-2009 |
| 20110216150 | OPTICAL HEAD - An optical head includes a light-emitting board which emits light, an attachment base which includes a first opening formed in an area overlapping the light-emitting board, a second opening formed in an area different from the area overlapping the light-emitting board and a through-hole to connect the first opening and the second opening, and to which the light-emitting board is fixed, and a lens to condense the light emitted from the light-emitting board to a photoreceptor. | 09-08-2011 |
| 20080259152 | Optical disc and method of labeling the same - An optical disc has a first plate, a second plate adhered to the first plate, and an optically-activated colorant disposed between the first and second plates. | 10-23-2008 |
| 20110025813 | IMAGE FORMING APPARATUS - An image forming apparatus includes an optical scanning unit, a measurement unit, a first adjustment unit and a second adjustment unit. The optical scanning unit includes a plurality of light sources to emit laser beams, a single oscillating mirror deflector to deflect the laser beams used for scan processing in a main scanning direction, and a scan-focusing member to focus the deflected laser beams onto a plurality of photoconductors. The measurement unit measures a resonance frequency of the oscillating mirror deflector. The first adjustment unit adjusts a speed of the photoconductors in a sub-scanning direction. The second adjustment unit adjusts a magnification ratio of image data in the sub-scanning direction. The first adjustment unit and the second adjustment unit adjust the image magnification ratio of image data in the sub-scanning direction depending on the resonance frequency as measured by the measurement unit. | 02-03-2011 |
| 20090278908 | LIGHTSCRIBE OPTICAL DISC DRIVE - An optical disc drive for marking a label side of a lightscribe disc is provided. The optical disc drive includes a spoke detecting device, a traverse assembly frame, a spindle motor PCB and an insulating base. The spoke detecting device is used for detecting spoke patterns on the lightscribe disc. The spindle motor PCB is communicated with the spoke detecting device through a flexible cable. The insulating base is coupled with the frame for supporting the spoke detecting device such that the spoke detecting device is separated from the lightscribe disc by a specified gap. | 11-12-2009 |
| 20110169906 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - Each light source has plural light emitting portions that are arranged at the different positions in at least a sub-scanning corresponding direction. A memory of a scanning control device stores correction data of the deviation of the beam pitch, correction data of the light amount difference, and correction data to decrease an influence of a reciprocity failure, for each combination of pixel forming light emitting portions. When a write signal is generated, a write control circuit of the scanning control device reads the correction data of the deviation of the beam pitch, the correction data of the light amount difference, and the correction data of the reciprocity failure according to the combination of the pixel forming light emitting portions from the memory, overlaps the read correction data to correction data of an APC, and outputs the overlapped data to a corresponding light source unit as light amount correction data. | 07-14-2011 |
| 20120268547 | MECHANISM FOR COATING LABORATORY MEDIA WITH PHOTO-SENSITIVE MATERIAL - A method for coating a laboratory print media with a photo-sensitive material may include generating, at a printer, a request to label a laboratory media. The laboratory media includes applying multiple coating layers to a laboratory print media to produce a human-readable and machine-readable label within a dedicated area of the print media. The multiple coating layers include at least a material based on photo-sensitive ink that is thermally-activated, and protected by a chemical and physical protective barrier/layer. The method may further include generating, using a printing mechanism, an image within the dedicated area of the print media. The image includes a laser-based image reflecting off of the photo-sensitive ink. | 10-25-2012 |
| 20110199454 | LIGHT SOURCE DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A light source device includes: a light source; a package member that holds the light source; a splitting element that is arranged on an optical path of a light beam output from the light source and splits the light beam into a first light beam and a second light beam; and a cap member that holds the splitting element so that the surface of the splitting element is inclined with respect to a plane orthogonal to a traveling direction of the light beam output from the light source and that is attached to the package member to seal the light source. | 08-18-2011 |
| 20120194628 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - An exposure device includes a long board, plural light emitting elements arranged along a longitudinal direction of the board on one face of the board, plural inspection electrodes arranged along the longitudinal direction of the board on the other face of the board, and plural electrical wirings each electrically connects between one of the plural light emitting elements and one of the plural inspection electrodes that is not positioned nearest to the one of the plural light emitting elements. | 08-02-2012 |
| 20080284837 | METHODS AND SYSTEMS FOR THERMA-BASED LASER PROCESSING A MULTI-MATERIAL DEVICE - A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes. | 11-20-2008 |
| 20110007124 | Semiconductor device, optical print head and image forming apparatus - A semiconductor device includes three-terminal light emitting element array provided on a substrate, which includes a plurality of three-terminal light emitting elements which are substantially linearly arranged. Each three-terminal light emitting elements includes a first, second and third terminals. The third terminal is used to control a current between the first and second terminals. A Lead-out wiring portion is connected to the plurality of three-terminal light emitting elements. The three-terminal light emitting element array includes a common layer provided between two or more three-terminal light emitting elements adjacent to each other. The common layer mutually connects the second terminals (or the third terminals) of the two or three three-terminal light emitting elements. The lead-out wiring portion includes wirings led from the common layer and the plurality of three-terminal light emitting elements and extending in a direction substantially perpendicular to an arranging direction of the plurality of three-terminal light emitting elements. | 01-13-2011 |
| 20110007125 | Light Source Device and Optical Scanner - In a light source device, a light-emitting element and a coupling lens configured to condense a beam of light emitted from the light-emitting element are held by a holding member. The holding member has an adherend that is opposite to a surface of the coupling lens facing to the light-emitting element in a direction of an optical axis of the coupling lens. Part of the surface of the coupling lens facing to the light-emitting element is bonded to the adherend of the holding member. In the optical scanner which includes this light source device, a beam of light emitted from the light source device is deflected by a deflector so that a target surface is scanned with the beam of light, and the deflected beam of light is caused by an image forming optical system to focus on the target surface, to form an image thereon. | 01-13-2011 |
| 20110012982 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes: a light source; an optical deflecting unit that deflects a light beam emitted from the light source to scan on a scanning surface in main-scanning direction; and a scanning optical system that includes a first scanning lens and a second scanning lens that converge the light beam that is deflected onto the scanning surface. Distance between an exit surface of the first scanning lens and an incident surface of the second scanning lens is shorter than distance between a deflection facet of the optical deflecting unit and an incident surface of the first scanning lens, an exit surface of the second scanning lens is nearer to the deflection facet than a midpoint between the deflection facet and the scanning surface, and an image-surface-side principal point of the scanning optical system in sub-scanning direction is nearer to the scanning surface than the midpoint. | 01-20-2011 |
| 20110012981 | IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE FORMING METHOD - An image forming apparatus includes: an optical-path deflecting unit that deflects optical paths of optical beams in one group out of two groups, the optical beams being provided in a sub-scanning direction at a predetermined pitch; a scanning unit that scans a surface to in a main scanning direction with the one group of which the optical paths have been deflected and another group of which the optical paths are not deflected; and a control unit that controls the optical-path deflecting unit to deflect optical paths of the optical beams in the one group so that irradiation positions of the optical beams in the one group and irradiation positions of the optical beams in the another group are alternately arranged at regular intervals. | 01-20-2011 |
| 20110267415 | LIGHT SOURCE UNIT, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs. | 11-03-2011 |
| 20110221856 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS USING THE SAME - An optical scanner, which scans at least one scanned face by a light beam, includes a light source having a plurality of light emitting points, an optical system before a light deflector configured to form a plurality of light beams from the light source, a light deflector configured to deflect the light beams via the optical system before a light deflector and scan the deflected light beams, and a scanning optical system configured to focus on the scanned face the light beams deflected and scanned by a deflection face of the light deflector, the optical system before a light deflector including a first optical element having a negative power at least in a deflecting and scanning vertical direction, a second optical element having a power only in a deflecting and scanning direction and a third optical element having a power only in the deflecting and scanning vertical direction. | 09-15-2011 |
| 20110228034 | SEMICONDUCTOR LASER DRIVER AND IMAGE FORMING APPARATUS INCORPORATING SAME - A semiconductor laser driver to drive a semiconductor laser, the semiconductor laser includes a drive circuit to generate a drive current to cause the semiconductor laser to emit, and a current control circuit to cause the driving current to repeatedly increase and decrease in a predetermined cycle. | 09-22-2011 |
| 20110228033 | SURFACE EMITTING LASER MODULE, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - Disclosed is a surface emitting laser module including a surface emitting laser element formed in a semiconductor substrate and having a surface emitting laser array that emits light in a direction perpendicular to a surface of the semiconductor substrate; a package having a region in which the semiconductor substrate is provided; and a metal cap having a cylindrical part formed of metal, the cylindrical part having a transparent substrate on one side thereof and a bottom part on the other side thereof bonded to the package. The transparent substrate is provided in the metal cap in such a manner as to be inclined with respect to the semiconductor substrate, the package has a metal part at a bonding part thereof bonded to the metal cap, and the metal part and the metal cap are bonded together by welding. | 09-22-2011 |
| 20110228031 | EXPOSURE APPARATUS AND IMAGE FORMING APPARATUS - An exposure apparatus that emits light toward a latent-image bearing member configured to bear a latent image, the latent image formed on the latent-image bearing member being used in a developing process performed by a developing device. The exposure apparatus includes a first light-emitting unit including an organic electroluminescence element disposed along a main scanning direction of the latent-image bearing member, the first light-emitting unit emitting light toward the latent-image bearing member, and a second light-emitting unit disposed along the main scanning direction, the second light-emitting unit correcting an amount of light to which the latent-image bearing member is exposed in cooperation with the first light-emitting unit. | 09-22-2011 |
| 20110228032 | OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND OPTICAL SCANNING METHOD - An optical scanning device includes: light sources emitting first beams having colors; a beam splitting unit splitting the first beams into second beams; a deflecting unit including reflecting members, each corresponding to one of the second beams and each performing deflection scanning of the second beams; an optical system for image formation of the second beams scanning on target surfaces that have been assigned with colors corresponding to the first beams; a detecting unit for detecting which of the reflecting member corresponds to the second beam; an interchanging unit for obtaining data of a lines corresponding to each of the first beams and interchanging the data of the lines based on a detection result; and a light source control unit for controlling the light sources in such a way that the light sources emit the first beams in accordance with the data of the lines interchanged. | 09-22-2011 |
| 20090251525 | Method of Forming Visual Image on Optical Disk by Laser Beam - A method is designed for forming a visual image having a specified shape on a surface of an optical disk by using an optical writing process of irradiating a laser beam onto the surface of the optical disk to form pits. The optical disk is normally capable of recording information on the surface thereof by the optical writing process. The method is carried out by the steps of acquiring image formation information associated to a visual image to be formed, forming the visual image on the surface of the optical disk based on the acquired image formation information by using the optical writing process, and recording the image formation information together with the formed visual image on the surface of the same optical disk. The image formation information contains start address information specifying a position of the surface of the optical disk to start the optical writing process for forming the visual image, stop address information specifying another position to stop the optical writing process, and pattern information specifying a pattern of irradiating the laser beam during the optical writing process. | 10-08-2009 |
| 20120105570 | LIGHT SCANNING UNIT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - A light scanning unit includes a light source unit to emit a plurality of light beams, a light deflector to deflect the plurality of light beams emitted from the light source unit in a sub-scanning direction, an incident optical system to allow the plurality of light beams emitted from the light source unit to be incident on different reflection surfaces of the light deflector, and an imaging optical system that allows a plurality of light beams that are deflected by the light deflector, to be imaged on different scanning surfaces, wherein the incident optical system includes at least one incident light path changing member that folds light paths of the plurality of light beams between the light source unit and the light deflector. | 05-03-2012 |
| 20120105569 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a housing, a light source, a rotatable polygon mirror deflecting a light beam from the light source, a scanning optical system scanning a scanning object with the light beam from the polygon mirror, first and second reflective mirrors one of which is provided inside a deflection area, and a photodetector detecting the timing of scanning of the scanning object with the light beam from the one of the first and second reflective mirrors. The scanning object is one of first and second scanning objects. The housing includes first and second supports configured to support the first and second reflective mirrors at first and second positions, respectively, that are outside first and second scan-use areas, respectively. The first position is also inside the second scan-use area. The first and second scan-use areas are used for the scanning of the first and second scanning objects, respectively. | 05-03-2012 |
| 20100157011 | LIGHT-EMITTING ELEMENT ARRAY DRIVE DEVICE, PRINT HEAD, IMAGE FORMING APPARATUS AND SIGNAL SUPPLYING METHOD - A light-emitting element array drive device includes: plural light-emitting elements; plural switch elements electrically connected mutually in an array and respectively to the light-emitting elements, and setting the respective light-emitting elements ready to emit light when turned on, and unready to emit light when turned off; a transfer signal supply unit supplying transfer signals for getting the switch elements turned-on by sequentially switching each switch element from being turned-off to turned-on, and to turned-off, where periods during which the respective switch elements are turned on are displaced so that each two periods for two of the switch elements adjacently-connected overlap; and a light-emission signal supply unit supplying a light-emission signal having light-emitting periods for the light-emitting elements, where an end point of each light-emitting period is set based on a start point of the above overlap, while a start point thereof is set before each end point. | 06-24-2010 |
| 20090315967 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a lens having a negative optical power at least in a sub-scanning direction and a lens having a positive optical power at least in the sub-scanning direction between a light source and a deflecting unit. The optical scanning device further includes a coupling lens and an adjusting lens whose positions can be adjusted in an optical axis direction and then bonded with ultraviolet curing resin. Therefore, the magnification of an optical system can be adjusted and consequently a desired scan-line interval can be obtained. | 12-24-2009 |
| 20090315968 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - Curve information is set in accordance with curving of a scanning line that occurs when an image is formed. A value of a target pixel is corrected on the basis of image data that is provided in a reference window having the target pixel and peripheral pixels, thereby transforming a region having a color of a specified image. The reference window that is used in the transformation is corrected in accordance with the curve information with respect to a main scanning position for pixels that are to be processed. | 12-24-2009 |
| 20100177155 | Light Emitting Element Array, Light Emitting Device, and Image Forming Apparatus - Provided are a light emitting element array that can perform a time-division driving operation with a small number of driving ICs and a small-sized light emitting device employing the light emitting element array and an image forming apparatus having the light emitting device. A light emitting element array chip ( | 07-15-2010 |
| 20100259592 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - There is provided an exposure device including: a light-emitting element array having an elongated support and plural light-emitting elements, the light-emitting elements being arranged in at least one row along a length direction of the support such that a spacing between two adjacent light-emitting elements is a pre-specified first spacing; and a hologram element array having a hologram recording layer disposed on the support and plural hologram elements formed, the plural hologram elements corresponding with each of the light-emitting elements and being formed such that a spacing along the support length direction between two adjacent hologram elements is the first spacing, and a diameter in the support length direction of each of the plural hologram elements being larger than the first spacing, such that a respective light emitted from each of the light-emitting elements is diffracted and focused toward a pre-specified image-forming plane by the corresponding hologram element. | 10-14-2010 |
| 20100225729 | EXPOSING DEVICE, IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM FOR CONTROLLING EXPOSURE - An exposing device includes a plurality of exposing units which forms a latent image, wherein exposing units includes: an exposure light source; a rotating polyhedron that reflects light from the exposure light source; a driving source that rotates the rotating polyhedron; a first detecting unit that detects the number of rotations of the driving source; a second detecting unit that detects the light from the exposure light source at a position; and a control unit that performs a first control of the driving source based on a detection signal of the first detecting unit at a start of the rotation of the rotating polyhedron and thereafter performs a second control of the driving source based on a detection signal of the second detecting unit. | 09-09-2010 |
| 20100225727 | LIGHT-EMITTING DEVICE, EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND SIGNAL SUPPLY METHOD - The light-emitting device includes: light-emitting elements linearly arrayed at intervals corresponding to a first resolution; switch elements electrically connected to the light-emitting elements; a transfer signal supply unit supplying a transfer signal for transmitting an on state among the switch elements by alternately repeating operations of turning on one switch element and turning on two adjacent switch elements including the one switch element; and a light-emission signal supply unit supplying a light-emission signal corresponding to a second resolution being a half of the first resolution, at supply timing changed according to whether in a first mode for causing an odd-numbered light-emitting element and a next even-numbered one to emit light as a pair, or the second mode for causing an even-numbered light-emitting element and a next odd-numbered one to emit light as a pair, the light-emitting elements arrayed at positions corresponding to the numbers. | 09-09-2010 |
| 20100238259 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a photosensitive member, a housing, a cover, an exposing unit fit to the cover and which moves closer toward/away from the photosensitive member in response to opening/closing of the cover, wherein the exposing unit forms a latent image on the photosensitive member by exposing the photosensitive member when the exposing unit is arranged in close vicinity to the photosensitive member by the closing of the cover, an image forming unit, which forms an image corresponding to the latent image and a housing side electrode provided inside of the housing, wherein the housing side electrode feeds an exposing power to an exposing unit side electrode by contacting the exposing unit side electrode provided in the exposing unit when the exposing unit is arranged in close vicinity to the photosensitive member by the closing of the cover. | 09-23-2010 |
| 20110109713 | OPTICAL DEVICE, OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND MANUFACTURING METHOD OF OPTICAL DEVICE - An optical device including an optical element; a package member in which the optical element is held on a bottom surface of the package member in an area surrounded by walls; and a plate member that seals the area surrounded by the walls and the bottom surface in an airtight manner, the plate member being translucent and joined to the package member with a resin material. The walls have a structure including steps, the plate member is joined onto one of the steps of the walls, and at least a part of the walls facing side surfaces of the plate member includes a positioning part for positioning the plate member and a retaining part for retaining the resin material, in a direction perpendicular to the bottom surface. | 05-12-2011 |
| 20100225728 | LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: a board; plural light-emitting chips that are one-dimensionally arrayed in a longitudinal direction of the board and that are connected to a first potential and a second potential; and plural capacitors that each include a first electrode and a second electrode arranged in a short-side direction of the board, and that are arrayed in the longitudinal direction of the board so that the first electrode and the second electrode are alternately positioned between each adjacent two of the capacitors. The first electrode is connected to the first potential for the light-emitting chips, and the second electrode is connected to the second potential for the light-emitting chips. | 09-09-2010 |
| 20100225730 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM - According to an exposure device includes an exposure section, a lighting drive section, a first temperature detector and a second temperature detector. The exposure section has a plurality of light-emitting elements. The lighting drive section determines light-emitting energies of the respective light-emitting elements and drives to light the respective light-emitting elements in accordance with the determined light-emitting energies. The first temperature detector is provided in the exposure section. The second temperature detector is provided outside the exposure section. The lighting drive section determines the light-emitting energies of the respective light-emitting elements based on a temperature detected by the first temperature detector and a temperature detected by the second temperature detector. | 09-09-2010 |
| 20100238257 | EXPSOURE DEVICE AND IMAGE FORMING APPARATUS - The exposure device is provided with: an exposure unit that has one end and a different end, that includes plural light-emitting elements arranged in a first direction along a direction of a rotational axis of a rotating image carrier, and that exposes the image carrier; a one-end-side holding portion that holds a one end part, on the one end side, of the exposure unit; a first reference part that is formed in the one-end-side holding portion, and that serves as a reference for aligning the exposure unit in the first direction by bringing the one end part of the exposure unit into contact with the first reference part; and an application portion that applies, to the one end part of the exposure unit, force with which the one end part of the exposure unit is pressed against the first reference part. | 09-23-2010 |
| 20100238258 | IMAGE FORMING APPARATUS AND CONTROL METHOD - An electrophotographic image forming apparatus performs latent image rendering using a plurality of light sources. The electrophotographic image forming apparatus includes a rendering time control unit that controls a latent image rendering start time for each of the light sources, a scanning time control unit that controls a scanning start time for each of the light sources, a pattern forming unit that forms a pixel pattern corresponding to pixel pattern data defined in advance on a photosensitive member, and a density detection unit that detects a density of the pixel pattern formed on the photosensitive member. The rendering time control unit and the scanning time control unit respectively control the rendering start time and the scanning start time for each of the light sources using a density value detected by the density detection unit. | 09-23-2010 |
| 20110058009 | LIGHT-EMITTING DEVICE, DRIVING METHOD OF SELF-SCANNING LIGHT-EMITTING ELEMENT ARRAY AND PRINT HEAD - The light-emitting device includes: a self-scanning light-emitting element array including: light-emitting elements; memory elements; and switch elements; and a light-up controller supplying a transfer signal setting ON of the switch elements, a memory signal causing, in a case where a switch element corresponding to a light-emitting element forming a group is set at the ON state, a corresponding memory element to be temporarily changed from OFF to ON if the light-emitting element is to light up, and the corresponding memory element to be kept in OFF if the light-emitting element is not to light up, and then causing the memory element having been temporarily changed to the ON state to be temporarily set at ON again, and a light-up signal for each group, the light-up signal causing a light-emitting element to be set at ON after causing a memory element to be set at ON. | 03-10-2011 |
| 20100208024 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM STORING PROGRAM FOR EXPOSURE CONTROL - An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements. | 08-19-2010 |
| 20110234739 | LIGHT-EMITTING DEVICE, DRIVING METHOD OF LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: light-emitting chips each including light-emitting elements and memory elements corresponding to each other, each memory element memorizing a light-emitting element to light up, each light-emitting chip being capable of lighting up the light-emitting elements in parallel; a unit to transmit an enable signal in common to light-emitting chips belonging to each of M groups obtained by dividing the light-emitting chips, the enable signal enabling selection of light-emitting elements to light up; a unit to transmit a write signal in common to light-emitting chips belonging to each of N classes obtained by dividing the light-emitting chips, the write signal setting memory elements corresponding to the light-emitting elements to light up, to a memory state or not, in the light-emitting chips where the selection is enabled; and a unit to transmit light-up signals for lighting up to light-emitting elements corresponding to memory elements in the memory state. | 09-29-2011 |
| 20110234741 | DRIVING CIRCUIT, DRIVING DEVICE AND IMAGE FORMING DEVICE - Each of a plurality of gate driving parts outputs a first potential (2 V) during a period in which the gates of a plurality of thyristors belonging to the corresponding set are driven (S | 09-29-2011 |
| 20110234740 | LIGHT-EMITTING DEVICE, DRIVING METHOD OF LIGHT-EMITTING DEVICE, LIGHT-EMITTING CHIP, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: plural light-emitting chips each having plural light-emitting elements, and each being designated, as a control target for lighting up or not lighting up, by two to Q designation signals (Q is an integer of two or more); and a selection signal generating part that selectively transmits P selection signals (P is an integer of three or more where P>Q) as the designation signals to designate each of the plural light-emitting elements as the control target, the designation signals for each of the plural light-emitting chips including a combination of two to Q selection signals taken from the P selection signals. | 09-29-2011 |
| 20110234738 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING UNIT - The present invention provides an annular exposure device, including:
| 09-29-2011 |
| 20110234737 | APPARATUS AND METHOD FOR DETERMINING BEAM DELAYS IN A PRINTING DEVICE - An apparatus ( | 09-29-2011 |
| 20100295918 | OPTICAL SCANNING APPARATUS AND COLOR IMAGE FORMING APPARATUS USING THE SAME - The optical scanning apparatus has at least two scanning units S | 11-25-2010 |
| 20110234742 | DRIVE DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A drive device to drive a plurality of three-terminal light emitting elements, comprising: a drive circuit including a first MOS transistor and configured to drive conducting three-terminal light emitting elements among a plurality of three-terminal light emitting elements based on a received drive signal. The first MOS transistor includes: a third terminal connected to a second power supply having a potential different from a potential of the first power supply; a fourth terminal connected to the second terminals connected in common, a second control terminal configured to control a conduction state between the third terminal and the fourth terminal based on the drive signal; and a substrate terminal set to have a potential different from the potential of the second power supply in a direction of increasing threshold voltage of the first MOS transistor. | 09-29-2011 |
| 20110128342 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus includes a polygonal mirror configured to deflect a light beam emitted from a light source such that the laser beam scans a member to be scanned, a drive motor configured to rotate the polygonal mirror, aboard on which the polygonal mirror and the drive motor are mounted, an installation portion where the board is installed, a rubber member provided between the board and the installation portion, and an adjustment unit configured to position on the board with respect to the installation portion and to adjust inclination of the board with respect to the installation portion by deforming the rubber member. | 06-02-2011 |
| 20100309278 | OPTICAL SCANNING DEVICE, BEAM CURVATURE CORRECTION METHOD AND IMAGE FORMING APPARATUS - An optical scanning device of an embodiment includes: a deflection unit which deflects a light beam emitted from a light source, in a main scanning direction; a reflection mirror which reflects the light beam from the deflection unit toward an image carrier; a supporting member which supports each of two ends of the reflection mirror; a plate situated on a back side that is opposite to an incident surface for the light beam, of the reflection mirror, along the axial line of the reflection mirror; a holding unit which holds an end of the incident surface with an end of the plate from the back side of the reflection mirror; and a pressing member which presses the back side of the reflection mirror in a curvature correcting direction against the plate. | 12-09-2010 |
| 20110122215 | IMAGE FORMING APPARATUS - An apparatus includes a plurality of light-emitting sources configured to irradiate a photosensitive member in a sub scanning direction with a plurality of light beams scanned in a main scanning direction of the photosensitive member via an optical system, a conversion unit configured to convert image data into pixel data constituting a pattern that expresses a density with a plurality of pixels, and a drive unit configured to cause the plurality of light-emitting sources to emit light based on the converted pixel data, wherein, where a number of light-emitting sources is B and a number of pixels of the pattern in the sub scanning direction is M, the number B and the number M have a relationship such that the number M is not divisible by the number B or the number B is not divisible by the number N. | 05-26-2011 |
| 20110128343 | SURFACE-EMITTING LASER ELEMENT, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER DEVICE, AND IMAGE FORMING APPARATUS - A disclosed surface-emitting laser element includes a resonator structure having an active layer, a first semiconductor multilayer mirror and a second semiconductor multilayer mirror configured to sandwich the resonator structure having the active layer, an electrode provided around an emission region of a light-emitting surface, and a dielectric film provided in a peripheral portion within the emission region and outside a central portion of the emission region to make a reflectance of the peripheral portion lower than a reflectance of the central portion. In the surface-emitting laser element, an outer shape of a portion where the electrode provided around the emission region of the light-emitting surface is in contact with a contact layer includes corners. | 06-02-2011 |
| 20110001788 | IMAGE FORMING APPARATUS AND LIGHT INTENSITY CONTROL METHOD - An image forming apparatus includes a light source that outputs a plurality of laser beams and a control unit that adjusts the light intensity of each of the laser beams. The control unit calculates a correction value so that, when the laser beam is driven by a control value calculated by correcting a common control value using the correction value and adding a threshold to the corrected control value, the light intensity of the laser beam is equal to a target light intensity. The threshold is calculated so that, when the laser beam is driven by a control value calculated by multiplying the corrected control value by a predetermined factor, and adding the threshold to the multiplied control value, the light intensity of the laser beam is equal to the target light intensity multiplied by the predetermined factor. | 01-06-2011 |
| 20110018958 | LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: an array of light-emitting elements connected to a light-up signal line to supply a current for lighting up; an array of memory elements provided so as to correspond to the respective light-emitting elements, connected through respective resistances to a memory signal line to supply a signal to designate a light-emitting element to be lighted up, and memorizing by getting turned on that a corresponding light-emitting element is to be lighted up; and an array of switch elements provided so as to correspond to the respective memory elements, electrically connected to the respective memory elements, connected to a transfer signal line to supply signals to set so as to allow a sequential shift of an ON state from one side end to the other end side, and causing the respective memory elements to be likely to be set in an ON state by getting turned on. | 01-27-2011 |
| 20110242259 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a light source; a brushless motor including a stator and a rotor; a rotary polygon mirror rotated by the brushless motor to form scanning lines on a photosensitive member; an energization switching unit turning on/off energizations of the coils; a voltage detecting unit outputting a detection signal based on induced voltages generated in coils of the stator by rotation of the rotor; a motor controlling unit turning on/off of the energizations by the energization switching unit based on the detection signal; an electric component that operates during formation of the scanning lines; and a power supply controlling unit which, in a detecting period of the detection signal for starting a rotation control of the brushless motor, reduces an amount of electric power supplied to the electric component to less than in a period of the formation of scanning lines after the detecting period. | 10-06-2011 |
| 20110025811 | LIGHT SCANNING UNIT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - Disclosed are a light scanning unit and an electrophotographic image forming apparatus including the light scanning unit. The light scanning unit may include a light source emitting a light beam, a beam deflector that deflects and scans the light beam emitted from the light source in a main scanning direction, a scanning optical system forming an image of a first portion of the light beam that is deflected and scanned by the beam deflector on a scanning surface and a beam detection sensor receiving a second portion of the light beam that is deflected and scanned by the beam deflector for generating a synchronization signal. The beam detection sensor may include a light receiving surface for receiving the second portion of the light beam, and at least two output terminals that are arranged outside an area of the light receiving surface within which the incident second portion of the light beam is confined. | 02-03-2011 |
| 20110025812 | IMAGE FORMING APPARATUS THAT CORRECTS CLOCK PHASE DIFFERENCE - An image forming apparatus capable of forming a high-resolution image without complicating a circuit construction. A difference between a phase of an operation clock for a BD detection unit and a phase of an operation clock for an image processing unit is measured by a phase measurement unit of the image forming apparatus, and a timing of data delivery between the BD detection unit and the image processing unit is adjusted by a BD input timing adjuster based on a measurement result. A difference between the phase of the operation clock for the image processing unit and a phase of an operation clock for a laser drive unit is measured by the phase measurement unit, and a timing of data delivery between the image processing unit and the laser drive unit is adjusted by an image output timing adjuster based on a measurement result. | 02-03-2011 |
| 20110115871 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - Provided is an electrophotographic image forming apparatus using a novel array light source to replace the LED array light sources, which enables provision of a reduced image formation spot diameter on a photoreceptor as well as a reduced spot pitch. An electrophotographic image forming apparatus according to the present invention includes an electrophotographic image forming apparatus including a light source, and an electrophotographic photoreceptor to be exposed by the light source, the light source for exposing the electrophotographic photoreceptor including: a plurality of surface plasmon waveguides for forming a potential distribution on the electrophotographic photoreceptor using near-field light generated at tips thereof, the surface plasmon waveguides being arrayed: and an excitation mechanism for exciting a surface plasmon on each of the plurality of surface plasmon waveguides. | 05-19-2011 |
| 20110115870 | OPTICAL SCANNER AND IMAGE FORMING DEVICE - An optical scanner includes: a light source that emits plural laser-beams; a deflecting section that deflects the laser-beams; a first optical-element that reflects the laser-beams deflected at the deflecting section and converges the laser-beams in a slow-scanning direction, and that can adjust positions, in the slow-scanning direction, of the laser-beams that the first optical-element reflects; a second optical-element that converges, in the slow-scanning direction, the laser-beams reflected at the first optical-element, and that can adjust scan line tilt of the laser-beams that the second optical-element reflects; and a planar reflecting member provided on an optical path between the first and second optical-elements, and reflects, toward the second optical-element, the laser-beams converged in the slow-scanning direction, the reflecting member having an adjusting mechanism that can adjust an angle of incidence in the slow-scanning direction of the laser-beams that are incident on the second optical-element. | 05-19-2011 |
| 20110115869 | EXPOSURE APPARATUS AND IMAGE FORMING APPARATUS - An exposure apparatus includes a light source that emits a plurality of light beams, a substrate on which the light source is mounted, a positioning member provided on a housing and being in contact with a positioning surface provided around the light source to position the light source with respect to the housing in an optical axis direction, the housing accommodating an optical system that guides the light beams, and an attachment member attached to the housing and including a portion that extends in a direction substantially perpendicular to the optical axis direction and that is bent over, an end of the bent portion being attached to the substrate such that the positioning surface around the light source is urged against the positioning member and the substrate is attached to the housing. | 05-19-2011 |
| 20110115873 | OPTICAL SCANNING APPARATUS - An image scanning apparatus includes a beam splitter disposed between a deflection surface and surfaces to be scanned. The beam splitter is formed of reflective surfaces and transmissive surfaces. One transmissive surface is disposed between the reflective surfaces in the sub-scanning direction, and an optical path of light beams reaching surfaces to be scanned that are physically closer to the deflection surface than a surface to be scanned located at the position physically farthest from the deflection surface between the reflective surfaces intersects with an optical path of a light beam reaching the surface to be scanned located at a position physically farthest from the deflection surface between the deflection surface and the transmissive surface in a sub-scanning cross section in the beam splitter. | 05-19-2011 |
| 20110115872 | SURFACE-EMITTING LASER ELEMENT, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER DEVICE, AND IMAGE FORMING APPARATUS - A disclosed surface-emitting laser element includes a substrate, multiple semiconductor layers stacked on the substrate including a resonator structure including an active layer, a semiconductor multilayer mirror on the resonator structure, and a confined structure where a current passage region is enclosed by at least an oxide generated by oxidation of part of a selective oxidation layer containing aluminum, an electrode provided around an emission region, and a dielectric film provided in a peripheral portion within the emission region and outside a central portion of the emission region to make a reflectance of the peripheral portion lower than that of the central portion. The dielectric film is arranged such that a reflectance of a high-order transverse mode in a second direction is higher than that in a first direction, and a width of the current passage region in the first direction is greater than that in the second direction. | 05-19-2011 |
| 20110242261 | OPTICAL HEAD AND IMAGE FORMING APPARATUS - An optical head includes a light-emitting element to emit light, a substrate to which the light-emitting element is fixed, a heat radiation member to which the substrate is fixed, a filling member filled between the substrate and the heat radiation member, and a lens to focus the light emitted from the light-emitting element. | 10-06-2011 |
| 20110242260 | OPTICAL HEAD AND IMAGE FORMING APPARATUS - An optical head includes a light-emitting substrate that emits light, a lens that focuses the light emitted from the light-emitting substrate, a holder that hold the light-emitting substrate and the lens, and a drive circuit that includes an electric element fixed to at least one of the lens and the holder and drives the light-emitting substrate. | 10-06-2011 |
| 20110242258 | EXPOSURE HEAD AND PRODUCING METHOD THEREOF, CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides an exposure head including:
| 10-06-2011 |
| 20090322848 | Image Forming Apparatus and Manufacturing Method Thereof - An image forming apparatus can include exposure units having light emitting elements, a forming unit which has a photoreceptor exposed by the exposure unit and forms an image on a body to be transferred, an acquisition unit for acquiring a tilt angle error between an approximated line of a first pattern formed by the forming unit based on exposure of one exposure unit and an approximated line of a second pattern formed by the forming unit based on exposure of an other exposure unit, and an adjustment unit for adjusting at least one of a light emitting time lag of the light emitting elements and an angular error of the exposure units between the one exposure unit and the other exposure unit to restrain the tilt angle error. | 12-31-2009 |
| 20110069134 | LASER-MARKING MULTILAYER SHEET FOR ELECTRONIC PASSPORTS, AND ELECTRONIC PASSPORT - There is provided a laser-marking multilayer sheet for an electronic passport formed by laminating five sheets of a multilayer sheet A/a multilayer sheet B/a film C/a multilayer sheet B/a multilayer sheet A. The multilayer sheet B is a colored laser-marking multilayer sheet. The film C is a laser-marking multilayer sheet made of a film for the electronic passport. The laser-marking multilayer sheet can have clear letters, symbols, and images, which are excellent in a laser-marking property and high in contrasts between the original surface color and the printed portions. The laser-marking multilayer sheet is excellent especially for inhibiting the falsification and forgery thereof. | 03-24-2011 |
| 20120120177 | ELECTROPHOTOGRAPHIC-TYPE IMAGE FORMING APPARATUS - An image forming apparatus comprises a light source, a photosensitive member and a control unit. The light source turns on in response to a driving current supplied based on image data. An electrostatic latent image is formed on the photosensitive member by exposing the photosensitive member to a light beam output from the light source turned on. The control unit controls the value of the driving current supplied to the light source in accordance with a driving state of the light source so that the value of the driving current supplied to the light source differs and changes with the passage of time in accordance with the driving state of the light source prior to the driving current being supplied to the light source. | 05-17-2012 |
| 20110069133 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an exposure head that includes a light emitting device for emitting light having a first wavelength and a second wavelength and an optical system having a first lens surface through which the light emitted from the light emitting device enters and a second lens surface from which the light entered through the first lens surface is emitted, forms an image of the light having the first wavelength at a first image forming position, and forms an image of the light having the second wavelength at a second image forming position different from the first image forming position in an optical axis direction of the optical system; a latent image carrier onto which the light emitted from the second lens surface of the exposure head is irradiated and a latent image is formed; and a support member that supports the exposure head. | 03-24-2011 |
| 20110069132 | LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: plural light-emitting elements arrayed in line; and a light-up signal wiring including block wirings that connect the plural light-emitting elements divided into plural blocks being units for controlling turning on and off of the light-emitting elements, that supply electric power for light emission to the light-emitting elements belonging to each of the blocks, and a main wiring that extends from a feeding point and to which the block wirings are connected. | 03-24-2011 |
| 20110050838 | SEMICONDUCTOR COMPOSITE DEVICE, METHOD OF MANUFACTURING THE SAME, OPTICAL PRINT HEAD AND IMAGE FORMING APPARATUS - A method of manufacturing a semiconductor composite device, including steps of: preparing a substrate comprising circuit elements, which are part of a driving circuit; attaching an array of driven elements onto the substrate via a passivation layer, the array being formed of a semiconductor thin film having a crystal structure wherein the driven elements are arrayed to be driven by the driving circuit; and forming a metal wire by a photo-lithography method such that the circuit elements are electrically connected with the metal wire to form the driving circuit and the driving circuit is electrically connected to the driven elements with the metal wire. | 03-03-2011 |
| 20110050839 | LIGHT SCANNING UNIT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS EMPLOYING THE SAME - Provided are a light scanning unit and an electrophotographic image forming apparatus employing the same. A possible form deviation during fabrication of a cylindrical lens employed by the light scanning unit is reduced by intentionally giving a form deviation to the incident surface and the emission surface of the cylindrical lens in the main scanning direction. | 03-03-2011 |
| 20110050837 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - If inclination correction of scanning line is performed while the incident position of the laser beam is not suitable, the shape of a spot of the laser beam which forms an image on a photosensitive drum may not be uniform depending on the scanning position of the laser beam. The housing is provided with a U-shaped groove to which the convex portion of a lens hold member that holds the lens is engaged. With the position of the convex portion adjusted, the convex portion is attached and secured in the U-shaped groove. Thus, the installation position of the lens to an optical path of the laser beam is adjusted, and the lens can be rotated and adjusted in order to correct an inclination or a bending of scanning line. | 03-03-2011 |
| 20110050836 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - In an exposure device, a light source device having multiple light emitting devices arranged in one-dimensional or two-dimensional directions projects light against an image bearing member. A light source holding member holds the light source device in place. An optical device condenses the light projected from the light source device onto the image bearing member. An optical device holding member holds the optical device to maintain a predetermined gap between the optical device and the light source device on the light source holding member. A positioning member supports the light source holding member above the image bearing member to maintain a predetermined gap between the image bearing member and the light source device on the light source holding member. When seen from a light emitting point of the light source device, a position at which the positioning member supports the light source holding member is opposite the image bearing member. | 03-03-2011 |
| 20110050834 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An electrophotographic image forming apparatus for forming an image on a recording medium includes: a light emitting member having multiple light emitting elements provided side-by-side along a direction of an axis of an electrophotographic photosensitive drum of a process cartridge removably mounted to a mounting portion to subject the drum to exposure according to image information; a light emitting member support which supports the light emitting member, and is movable between an exposure position, at which the drum is subjected to exposure, and a retracted position, at which the light emitting member is retracted from the exposure position; and a moving member configured to move the light emitting member support between the exposure position and the retracted position in a state in which the light emitting member keeps parallel to the axis of the drum. | 03-03-2011 |
| 20110050833 | Image forming apparatus - An image forming apparatus including a black developer with increased capacity. The image forming apparatus includes optical scanners, where the optical scanners have the same focusing distance from the light source to the photo conductor, and the light reflecting unit of one of the optical scanners is arranged at a position different from the light reflecting unit of another optical scanner, such that intervals between the developers vary. Accordingly, although developers of the same type are used, the capacity of the black developer, which is most frequently used, may be easily increased by arranging the relative positions of the developers. | 03-03-2011 |
| 20100245527 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS, AND COMPUTER-READABLE MEDIUM - An exposure device includes a plurality of light emitting elements, a load, a first supplying unit and a second supplying unit. The first supplying unit supplies a driving current to one of (i) light emitting elements used to form an image among the plurality of light emitting elements and (ii) the load, in accordance with a modulation signal. The first supplying unit supplies a bias current to the other. The second supplying unit supplies the bias current to light emitting elements not used to form the image among the plurality of light emitting elements, regardless of the modulation signal. | 09-30-2010 |
| 20120200655 | Optical Scanner And Image Forming Apparatus Including Same - An optical scanner includes a light source, an optical part, an enclosure, and a retainer. The light source projects light against a target. The optical part is disposed on a light path between the light source and the target. The enclosure houses the light source and the optical part. The retainer is fixed to the enclosure and includes a plurality of optical part mounts of identical shape and different sizes. The optical part is adhered to one of the plurality of optical part mounts. | 08-09-2012 |
| 20100245526 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS, AND COMPUTER-READABLE MEDIUM - An exposure device includes plural light-emitting elements, a light amount detection unit, a controller, plural holding units and a connection unit. The controller sequentially determines control values of the light-emitting elements based on comparison between the light amounts detected by the light amount detection unit and a predetermined reference value. The holding units are provided for the light-emitting elements, respectively. Each holding unit holds a control voltage of the controller. When the controller is to sequentially determine control values of a part of the plurality of light-emitting elements, the connection units connects the controller and the holding units corresponding to one or more light-emitting elements for which control values are determined earliest among the part of the plural light-emitting elements, before the controller determines the control values of the one or more light-emitting elements. | 09-30-2010 |
| 20100245525 | IMAGE FORMING APPARATUS AND CLEANING MEMBER FOR EXPOSURE HEAD - The image forming apparatus includes: an image carrier; an exposure head provided along a longitudinal direction of the image carrier, and exposing the image carrier; a housing holding the exposure head; an opening portion formed in the housing, and opening toward a position through which the image carrier and the exposure head face each other; a receiving portion provided in the housing; and a cleaning member having one and different ends, and including: a cleaning portion provided on a one end side where the one end is located, and cleaning a light-emitting face of the exposure head by moving while keeping in contact with the light-emitting face; and a guiding portion coming in contact with the receiving portion and guiding the cleaning portion toward a space between the image carrier and the exposure head when the cleaning portion is inserted into an interior of the housing through the opening portion. | 09-30-2010 |
| 20110254910 | LIGHTSCRIBE OPTICAL DISC DRIVE - An optical disc drive for marking a label side of a lightscribe disc is provided. The optical disc drive includes a metallic plate, a spoke detecting device and a spindle motor PCB. The spoke detecting device is used for detecting spoke patterns on the lightscribe disc. The spindle motor PCB is supported on the metallic plate and having a notch such that a receptacle is defined by sidewalls of the notch and a surface of the metallic plate. The spoke detecting device is received in the receptacle such that the spoke detecting device is separated from the lightscribe disc by a specified gap. | 10-20-2011 |
| 20100321461 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS INCLUDING SAME - An optical scanner includes a rotation control unit to change a number of revolutions of a rotary deflector to change a ratio of a scan speed of a light beam scanned on the surface of a latent image bearing member to a linear velocity of the latent image bearing member in accordance with a change in a linear velocity of the latent image bearing member, an inclination adjustment unit to adjust inclination of a scan line relative to a reference scan line on the latent image bearing member, an inclination adjustment unit controller to adjust the inclination adjustment unit based on the ratio, and a scan initiation unit to initiate scanning of the light beam on the surface of the latent image bearing member after adjustment of inclination is completed and the rotary deflector starts rotating at a constant speed for writing a latent image. | 12-23-2010 |
| 20120062686 | EXPOSURE DEVICE AND IMAGE FORMING DEVICE - An exposure device includes: an optical system member that causes light irradiated from a light emitting element to converge; an optical system support part that supports the optical system member; and a fixing member for fixing the optical system member to the optical system holding part. An elongation of the fixing member is in a range of 40% to 80% inclusive. | 03-15-2012 |
| 20100309277 | LIGHT SOURCE UNIT, OPTICAL SCANNER INCLUDING SAME, AND IMAGE FORMING APPARATUS INCLUDING THE OPTICAL SCANNER - A light source unit includes a holder, a light source, coupling lens, and a support member. The light source is supported by the holder and projects a light beam against a target. The coupling lens adjusts an optical axis of the light beam. The support member contacts the holder and the coupling lens to fix the coupling lens in place on the holder after the coupling lens adjusts the optical axis of the light beam. The holder and the coupling lens are adhered to the support member using an adhesive agent. An optical scanner includes a rotary deflector to deflect and scan the light projected from the light source unit, a scan optical element to focus the light deflected by the rotary deflector, and the light source unit. An image forming apparatus includes the optical scanner. | 12-09-2010 |
| 20100315477 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a first optical a light source that has a plurality of luminous points; a first optical system that shapes a plurality of beams of light; a rotary polygon mirror an optical scanning system that causes the beams of light deflected to form images on a surface to be scanned, wherein β is assumed to be half of an angle formed between the optical axis of the first optical system and the optical axis of the optical scanning system within the deflecting/scanning surface, δ is assumed to be a distance between an intersection dc and an intersection hh, wherein δ is set to be zero or a negative value, given that δ is defined positive when the intersection dc is present on the optical-scanning side of the intersection hh. | 12-16-2010 |
| 20100182391 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM - An exposure device includes an exposure section and first and second signal output units. The exposure section has plural light emitting elements. The first signal output unit outputs to the exposure section a first signal for determining timings for starting and ending light emission of the respective light emitting elements. The second signal output unit outputs to the exposure section a second signal for determining as to whether the respective light emitting elements are caused to emit light for respective pixels. If light mission of the respective light emitting elements is stopped with respect to all pixels of one line in a main scanning direction, the first signal does not output to the exposure section for each group of one or plural light emitting elements that operate based on the common first signal. | 07-22-2010 |
| 20110074908 | LIGHT SCANNING UNIT - A light scanning unit including: a housing including optical components disposed on an optical path, wherein an electrostatic latent image is formed by scanning light beams respectively onto a plurality of photosensitive drums, wherein a plurality of slits are formed, in a sub-scan direction, in both side frames of the housing which face each other; and a thermal expansion control unit disposed on both of the side frames and having a lower thermal expansion coefficient than the thermal expansion coefficient of the housing. Since the change of the scan line due to the thermal deformation may be reduced in the light scanning unit, the light scanning unit may be efficiently applied to electrophotographic imaging apparatuses in any orientation. For example, the light scanning unit may be installed in an electrophotographic imaging apparatus so as to be parallel to or perpendicular to the main body of the electrophotographic imaging apparatus. | 03-31-2011 |
| 20110096134 | Light emitting diode array including apertures, line printer head, and method of manufacturing the light emitting diode array - A light emitting diode array including apertures, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes the apertures that are formed in a substrate and restrict tunnels of light emitted from a plurality of light emitting diodes. Also, a lens that refracts the light transmitted through the plurality of apertures is included. | 04-28-2011 |
| 20110096133 | EXPOSING DEVICE AND IMAGE FORMING APPARATUS - An exposing device includes a plurality of light emitting elements, a substrate to which the plurality of light emitting elements are mounted, an optical system that focuses lights emitted by the plurality of light emitting elements, and a holder that holds the optical system. The holder has a substrate abutting surface that abuts against the substrate. The holder includes a base material portion made of metal, and a substrate abutting portion formed integrally with the base material portion. The substrate abutting portion is made of resin having electrical insulation property. The surface abutting surface is formed on the surface abutting portion. | 04-28-2011 |
| 20100060710 | LIGHT SOURCE DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A light source including a plurality of light emitting areas formed in a two-dimension array is mounted on a substrate. A holding member holds an optical system that shapes a laser beam emitted from each of the light emitting areas, a splitting element that splits a part of the laser beam passed through the optical system, and a light receiving system that receives split laser beam. A base member including an aligning unit that aligns the light source in a direction along an optical axis of the optical system and a direction perpendicular to the optical axis is connected to the holding member. An elastic member presses the substrate against the base member. | 03-11-2010 |
| 20100194841 | Exposure Head, Image Forming Apparatus, and Image Forming Method - Provided is an image forming apparatus including: a latent image carrier, on which a latent image is formed; an exposure head that includes a first light-emitting element and a second light-emitting element that is disposed in a direction in which the latent image container corresponding to the first light-emitting element is moved; and a control unit that changes over and performs a first latent image forming operation, in which the latent image is formed on the latent image container by using the first light-emitting element, and a second latent image forming operation, in which the latent image is formed on the latent image container by using the second light-emitting element, wherein the control unit controls a first light emission timing of the first light-emitting element in the first latent image forming operation and a second light emission timing of the second light-emitting element in the second latent image forming operation to be different from each other. | 08-05-2010 |
| 20100026778 | DRAWING DEVICE AND METHOD, AND COMPUTER PROGRAM - A drawing device ( | 02-04-2010 |
| 20100026777 | OPTICAL SCANNING DEVICE, CONTROL METHOD THEREOF, AND IMAGE FORMING APPARATUS THEREWITH - An optical scanning device is disclosed, including: a light deflection part, an imaging optical element, a variable focus optical element, and a focal point control device. The light deflection part repeatedly deflects and scans a light flux emitted from a light source on a scan surface. The imaging optical element forms an image in a vicinity of the scan surface with the light flux. The focal point control device changes a focal distance of the variable focus optical element, which is arranged in an optical path from the light source to the light deflection part, in executing each of deflection scans, and correct an image misalignment on the scan surface due to an optical path difference for each scan angle. | 02-04-2010 |
| 20120306987 | PRINTING APPARATUS AND METHOD FOR PAPER CUP - Provided is a paper cup printing apparatus including: a photographing unit that takes a photo; a printing unit that prints the photo taken by the photographing unit on the surface of a paper cup; and a control unit that converts the photo taken by the photographing unit into data for printing, and controls the printing unit to automatically print the photo on the surface of the paper cup. The paper cup printing apparatus prints user's face or favorite image on a paper cup for containing coffee or drink to thus encourage recycling of the paper cup and increase sales of coffee or drink. | 12-06-2012 |
| 20110304683 | LASER DRIVING DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A laser driving device in the embodiment includes: a laser light source that emits laser light; a light source drive control unit that adjusts a light amount of laser light emitted from the laser light source constant and controls on-off driving of the laser light source; a light amount adjustment element that is disposed in an optical path of laser light emitted from the laser light source and is capable of electrically changing transmittance or reflectance of the laser light that is entered thereinto; and a peak light amount control unit that controls the transmittance or the reflectance of the light amount adjustment element, so as to adjust a peak light amount of the laser light that is output from the light amount adjustment element after having traveled through or having been reflected by the light amount adjustment element. | 12-15-2011 |
| 20110304682 | SURFACE EMITTING LASER ELEMENT, SURFACE EMITTING LASER ARRAY, OPTICAL SCANNING UNIT, IMAGE FORMING APPARATUS AND METHOD OF MANUFACTURING SURFACE EMITTING LASER ELEMENT - A surface emitting laser element includes a light emission part having a mesa structure. The light emission part includes a lower reflector; a resonator structure including an active layer; and an upper reflector. The lower reflector, the resonator structure and the upper reflector are laminated on a substrate. A peripheral part of a top surface of the mesa structure is covered by a dielectric layer that has a tapered surface such that a thickness decreases in a direction toward an outermost part, a taper angle of the tapered surface with respect to a surface of the substrate is smaller than a slope angle of a side wall of the mesa structure with respect to the surface of the substrate, and an end part of the dielectric layer coincides with an end part of the upper reflector. | 12-15-2011 |
| 20110304681 | LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting device includes: a circuit board including at least two of signal interconnection layers each having plural signal interconnections, at least adjacent two of the signal interconnection layers including signal interconnections provided so that center positions of the respective signal interconnections in a direction intersecting with a longitudinal direction are displaced from each other in portions of the signal interconnections provided in the longitudinal direction; and plural light-emitting chips each having plural light-emitting elements, the light-emitting chips being arrayed in line in the longitudinal direction on a surface of the circuit board. | 12-15-2011 |
| 20120147120 | LASER-MARKABLE COMPOSITIONS - A laser-markable composition comprises a pigment, a solvent and a conductive polymer that absorbs IR radiation. This can be used to mark a substrate, using a low-energy laser. | 06-14-2012 |
| 20120147119 | COLOR IMAGE FORMING APPARATUS - A controller which causes a light emitting element to continuously perform minute emission for a plurality of dots in a level in which toner is not attached to a non-image section on an image bearing member is provided. The controller controls a first driving current for an image section and controls a second driving current used to perform the minute emission by the light emitting element in the non-image section several times in one job. In the image section, a driving current obtained by adding the first driving current to the second driving current is supplied so that the light emitting element emits light. | 06-14-2012 |
| 20120098917 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus to form an image by scanning with a light beam through a polygon mirror, having a motor drive section to rotate and drive the polygon mirror based on a polygon drive clock pulse and an image processing section capable of adjusting image magnification through image processing, and a control section to control that at least image magnification adjustment by changing revolution of the polygon mirror or image magnification adjustment through the image processing in the image processing section is selected in accordance with an output form of the image when the image magnification is adjusted. | 04-26-2012 |
| 20110063401 | OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND OPTICAL WRITING METHOD - An optical writing device includes two or more light sources. The two or more light sources can be driven independently, are placed away from each other in a sub-scanning direction of a photoreceptor, and each distance of beams emitted from the light sources to the photoreceptor is different. A phase control unit causes a difference in phase among timing control data of two or more beams emitted from the two or more light sources by a phase change amount, which is determined on the basis of beam position of the each beam on the photoreceptor in a main scanning direction and varies depending on the beam position. The modulating unit modulates the timing control data of the respective phase-controlled beams by a same clock. | 03-17-2011 |
| 20110063400 | LIGHT-EMITTING CHIP, PRINT HEAD AND IMAGE FORMING APPARATUS - The light-emitting chip includes: a substrate; plural light-emitting thyristors each having a pnpn structure formed of a first stacked-semiconductor layer in which at least 4 semiconductor layers having different conductivity types and including the substrate are stacked on the substrate; a lower wiring that is formed of a second stacked-semiconductor layer in which at least 3 semiconductor layers having different conductivity types and including the substrate are stacked on the substrate, and that has a semiconductor layer between the substrate and an uppermost semiconductor layer of the second stacked-semiconductor layer, the semiconductor layer having a fixed potential so that any one of p-n junctions between the substrate and the uppermost semiconductor layer is reversely biased with respect to potentials respectively applied to the substrate and the uppermost semiconductor layer; and an upper wiring provided on the lower wiring so as to intersect with the lower wiring through an isolation layer. | 03-17-2011 |
| 20110316960 | OPTICAL SCANNING APPARATUS AND COLOR IMAGE FORMING APPARATUS USING THE SAME - To provide high flexibility in the arrangement of optical paths toward a plurality of photosensitive members and not to cause an increase in size of an image forming apparatus even when a cartridge capacity is increased, provided is an image forming apparatus including: light source units; a deflecting unit for deflecting a plurality of light beams for scanning; a plurality of photosensitive members; an imaging optical system for imaging the light beams deflected for scanning; and a plurality of toner containers, in which the toner containers are different in capacity, and an optical path length from the photosensitive member for the same color as the toner container having a large capacity to the deflecting surface of the deflecting unit is longer than an optical path length from the photosensitive member for the same color as the toner container having a small capacity to the deflecting surface of the deflecting unit. | 12-29-2011 |
| 20110316958 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS INCLUDING SAME - An optical scanner includes a housing, a light source, a polygon mirror, an optical device, and a holder. The housing includes a mounting portion. The light source projects light. The polygon mirror is enclosed within the housing and rotates to deflect the light projected from the light source. The optical device is disposed substantially near the polygon mirror. The holder is disposed within the housing and attached to the housing at the mounting portion, and holds the optical device in place. A distance L | 12-29-2011 |
| 20110316957 | IMAGE FORMING APPARATUS HAVING PLURAL OPTICAL SCANNING DEVICES - The image forming apparatus includes a chassis; plural image bearing members; plural optical scanning devices having the same configuration and located on respective installation positions of the chassis after installed thereon to scan the image bearing members with light beams; and plural incompatibility imparting mechanisms. The incompatibility imparting mechanisms are located on the corresponding optical scanning devices, and have the same configuration and the same initial state before the plural optical scanning devices are installed on the chassis, but achieve incompatible states after the optical scanning devices are installed. When the optical scanning devices in the incompatible states are detached from the chassis and then attached again thereto, the incompatibility imparting mechanisms prevent the corresponding optical scanning devices from being set to positions other than the respective installation positions. | 12-29-2011 |
| 20120001998 | IMAGE FORMING APPARATUS AND CONTROL METHOD OF IMAGE FORMING APPARATUS - There is provided with an image forming apparatus, which includes: a laser output unit that outputs laser light; a rotary polygon mirror that reflects the laser light output from the laser output unit; a photoconductor where the laser light reflected from the rotary polygon mirror is incident to scan; and a controller that corrects the written position of laser light on the photoconductor in a first state where the amount of laser light output from the laser output unit is a first amount of light and a second state where the amount of laser light is larger than the first amount of light, by controlling emission timing of the laser output unit. | 01-05-2012 |
| 20120001997 | IMAGE FORMING APPARATUS AND METHOD OF THE SAME - According to one embodiment, the control section forms a latent image pattern for detecting malfunction, on each photoconductive drum. The control section determines malfunction of each laser unit based on the detection result of each surface potential sensor with respect to the formed latent image pattern. | 01-05-2012 |
| 20120001996 | DRIVING DEVICE, PRINT HEAD AND IMAGE FORMING DEVICE - A driving device that drives a light emitting thyristor array includes: a first driving circuit operated by a second power source; a scanning circuit including plural stages of scanning thyristors and sequentially scanning the plural stages of light emitting thyristors, a second driving circuit operated by a second power source, generating first and second clock signals for driving the scanning circuit, and outputting the first and second clock signals from first and second clock terminals, respectively, a terminal of an odd numbered stage scanning thyristor is commonly connected to the first clock terminal, another terminal of an even numbered stage scanning thyristor is commonly connected to the second clock terminal, and a control terminal of a first stage scanning thyristor is connected to the second clock terminal via a first resistor. | 01-05-2012 |
| 20100295917 | IMAGE FORMING APPARATUS - An image forming apparatus capable of enhancing the accuracy of the scanning position of a laser beam to thereby obtain a more precise image. Optical sensors detect reflected light from a surface of a photosensitive drum. During image formation, the apparatus detects the scanning speed of the laser beam in a main scanning direction based on detection signals from the respective optical sensors in each of divisional sections of an image forming area in the main scanning direction. The apparatus corrects magnification of the image in the main scanning direction, based on results of detection of the scanning speed of the laser beam in the main scanning direction. | 11-25-2010 |
| 20120044315 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a pre-deflection optical system including a first optical element that adjusts the shape of beams emitted from the light source; and a second and third optical elements arranged such that the second optical element is arranged closer to the light source than the third optical element is. Both of the second and third optical elements have no refracting power in the deflection scanning direction and have positive refracting power only in a direction perpendicular to the deflection scanning direction. An interval between scanning lines formed on the scanned area and a deviation of the scanning-line interval between scanning positions are adjusted by displacement of the second and third optical elements in a direction of an optical axis of the pre-deflection optical system and displacement of at least one of the second and third optical elements in the direction perpendicular to the deflection scanning direction. | 02-23-2012 |
| 20120056967 | IMAGE FORMING APPARATUS - An image forming apparatus has a speed range showing image forming capability per unit time that is determined in advance, and is settable to either a model set at a relatively low-speed range or a model set at a relatively high-speed range. Then, the arrangement of the laser elements is differentiated between a low-speed machine and a high-speed machine each other. Even when timing of writing for the high-speed machine is applied to the arrangement of the laser elements for the low-speed machine to write in an image, the image is not able to be written successfully, and resulting in an image which is displaced vertically. | 03-08-2012 |
| 20120056968 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - Provided is an optical scanning device including: a plurality of light sources; an optical deflector that includes reflection surfaces that deflect different light beams toward opposite sides of the optical deflector; and a light-shielding member provided in an area between incident light beams emitted from the plurality of light sources. The light-shielding member is positioned such that a portion of the light-shielding member is in a light-shield area surrounded by a circumscribed circle of the optical deflector, a line tangent to the circumscribed circle and orthogonal to a Y direction, and the incident light beam, the Y direction being a direction parallel to a main scanning direction and passing through a rotation center of the optical deflector, the main scanning direction being a direction, in which surfaces of image carriers are scanned. | 03-08-2012 |
| 20120019607 | SHEETING WITH COMPOSITE IMAGE THAT FLOATS - Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting. | 01-26-2012 |
| 20120026270 | ORGANIC EL DEVICE, METHOD OF MANUFACTURING THE SAME AND PRINTER - According to one embodiment, an organic EL device includes a first substrate, a second substrate, an adhesive agent, and a drying agent. An organic EL element is formed on the first substrate. The second substrate has a first surface facing the first substrate and a second surface on an opposite side from the first surface. A concave portion having a bottom portion and a sidewall portion is formed on the first surface. The adhesive agent is surrounding the organic EL element. The adhesive agent is configured to join the first substrate and the second substrate to each other. The drying agent is applied to at least a part of the bottom portion and the sidewall portion of the concave portion. | 02-02-2012 |
| 20120062685 | Optical scanner and image forming apparatus including same - An optical scanner includes a light source, an optical part, a housing, and a retainer. The light source projects light against a target. The optical part is disposed on a light path between the light source and the target. The housing houses the light source and the optical part. The retainer fixed to the housing holds the optical part and includes a plurality of flanges disposed along an outer circumference of the retainer. One of the plurality of flanges of the retainer is adhered to the housing an adhesive agent. An image forming apparatus includes the optical scanner. | 03-15-2012 |
| 20110085014 | Laser Array - Electrophotographic print system, comprising a photosensitive medium, and a laser array being provided with a plurality of laser diodes arranged to emit light onto the photosensitive medium for varying an electrical potential on a surface of the photosensitive medium, and a plurality of heat dissipation diodes, each heat dissipation diode being arranged in proximity to a corresponding laser diode, wherein each laser diode and the corresponding heat dissipation diode are coupled to a common drive circuit and are arranged in opposite current flow directions with respect to each other, so that in use the current flows either through the laser diode or through the heat dissipation diode depending on the current flow direction in the drive circuit. | 04-14-2011 |
| 20110090297 | IMAGE FORMING DEVICE AND IMAGE FORMING METHOD - An image forming device includes: an exposure head that includes a light emitting element and a light emission controller that causes the light emitting element to emit light on the basis of a control signal; a photoreceptor that is exposed to the light emitted by the light emitting element included in the exposure head so that a latent image is formed on the photoreceptor; a correcting section that corrects the control signal on the basis of the spectral sensitivity of the photoreceptor to a spectral distribution of the light emitting element; and a developing section that develops the latent image formed on the photoreceptor. | 04-21-2011 |
| 20110102536 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - Each of a plurality of pixels is formed with a group of a plurality of spots or a single spot. The barycentric position of each pixel is determined by the distribution of the spots or the position of the single spot. While the number of pixels on the exposure object is maintained in a first direction corresponding to the array direction of the light sources, an exposure feasible width on an exposure object can be adjusted in the first direction by setting the barycentric position at least in the first direction out of the first direction and a second direction that is the moving direction of the exposure object. | 05-05-2011 |
| 20120120176 | LIGHT-EMITTING CHIP, LIGHT-EMITTING DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A light-emitting chip includes: a substrate; plural light-emitting elements arrayed in line on the substrate, each of the light-emitting elements including a light-emitting region having a length in an array direction of the array different from a length in a direction orthogonal to the array direction; and a light-up current supplying interconnection including plural connecting portions, each of the connecting portions being provided on the light-emitting region of a corresponding one of the light-emitting elements in a shorter direction of the light-emitting region either the array direction or the direction orthogonal to the array direction, each of the connecting portions being connected to an electrode provided on the light-emitting region, the light-up current supplying interconnection supplying a current for lighting up to the plural light-emitting elements through the plural connecting portions. | 05-17-2012 |
| 20100289864 | SCANNING OPTICAL DEVICE AND IMAGE FORMING APPARATUS - A scanning optical device, comprises a light source to emit a light beam; a deflecting section to deflect the emitted light beam so as to scan; an optical element to make the scanning light beam to converge; and a correcting mechanism to correct an attitude of the optical element so as to adjust a convergence position of the scanning light beam; wherein at least a part of the correcting mechanism is arranged between the deflecting section and the optical element. | 11-18-2010 |
| 20100245528 | EXPOSURE APPARATUS, METHOD FOR CORRECTING EMISSION QUANTITY OF EXPOSURE APPARATUS, AND IMAGE FORMING APPARATUS - An exposure apparatus has a plurality of light emitting elements and a light quantity measuring circuit, sets a reference light quantity based on a plurality of emission quantities when the plurality of light emitting elements emit light in accordance with a specific gradation signal for a predetermined emission time, generates a plurality of corrected gradation signals by correcting the gradation signal based on the differences between the reference light quantity and the plurality of emission quantities so that the plurality of emission quantities of the plurality of light emitting elements become close to the reference light quantity, and corrects the emission time of the plurality of light emitting elements so that the plurality of emission quantities of the plurality of light emitting elements become close to the target reference light quantity set in accordance with image data. | 09-30-2010 |
| 20120127256 | LIGHT SCANNING UNIT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - A light scanning unit and an electrophotographic image forming apparatus employing the same. The light scanning unit includes an imaging optical system including, when a path of one of the light beams directed to one of the surfaces disposed relatively far from the deflector is referred to as a first light path and when a path of one of the light beams directed to one of the surfaces disposed relatively close to the deflector is referred to as a second light path, light paths in which both of a section of the second light path before a first change of the second light path and a section of the second light path after the first change of the second light path intersect a section of the first light path after a second change of the first light path. | 05-24-2012 |
| 20100208025 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM - An exposure device includes a reference current generating unit generating a reference current for each image of respective colors, a photoelectric current generating unit generating a photoelectric current in response to a light amount of the light emitting element, a driving unit driving the light emitting element, a first controller, a drive voltage holding unit holding a drive voltage given to the driving unit, a second controller controlling the driving unit based on the drive voltage held, a comparison current generating unit generates a comparison current, a difference current generating unit generating a difference current, of each color, corresponding to a difference between the reference current of each color and the comparison current. The first controller compares a value obtained by adding the difference current of each color to the photoelectric current with the comparison current to control the driving unit so that the photoelectric current becomes the reference current. | 08-19-2010 |
| 20110181679 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - An exposure device includes a light source, an image processing unit, and a light emitting control unit. In the light source, plural light emitting elements are arranged in main scanning and in sub-scanning directions. The image processing unit, based on image information relating to an image and processing information relating to a processing method of the image, executes image processing of converting into image information for exposure in a processing method corresponding to the processing information. The light emitting control unit controls the light emitting elements in accordance with the image information for exposure to emit light beams. The light emitting control unit controls the light emitting elements which are to emit the light beams based on a periodicity, in the sub-scanning direction, corresponding to the image processing executed in the image processing unit and a periodicity of an arrangement of the light emitting elements in the sub-scanning direction. | 07-28-2011 |
| 20120133726 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source that emits a laser beam, a deflector that deflects the emitted laser beam, a scanning lens that causes the deflected laser beam to scan a surface of a photosensitive body at a uniform velocity, a reflector having a reflective surface that reflects the deflected laser beam toward the photosensitive body among the laser beams that have passed through the scanning lens, and a synchronization sensor that receives the laser beam from the reflector and outputs a detection signal. The reflector is set so that a scanning speed in a main scanning direction of the laser beam on a light-receiving surface of the synchronization sensor becomes greater than a value obtained by dividing a scanning distance of the laser beam in the main scanning direction on the light-receiving surface of the synchronization sensor by a response delay time of the synchronization sensor. | 05-31-2012 |
| 20120176462 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus and an image forming apparatus having the optical scanning apparatus includes a before-light-deflecting-unit optical system and a scanning optical system. The optical system includes a first optical device, a second optical device made of a resin material which has an anamorphic negative refracting power in a deflection scanning direction and a deflection scan perpendicular direction and has a larger refracting power in the deflection scan perpendicular direction than a refracting power in the deflection scanning direction, and a third optical device made of a glass material which has substantially no refracting power in the deflection scanning direction and a positive refracting power in the deflection scan perpendicular direction. An interval of the scanning lines formed on the scanned surface is adjusted by displacement of the second and third optical devices in an optical axis direction of the before-light-deflecting-unit optical system. | 07-12-2012 |
| 20120249716 | DRIVER DEVICE, PRINT HEAD, AND IMAGE FORMATION APPARATUS - A driver device scans and drives light emission elements arranged in a branch connection to a common terminal using scan-circuit and data drive portions and clock driver and waveform shaper circuits. The scan circuit portion has scan circuits connected cascadely to one another with output terminals connected to the light emission elements. The driver device outputs first and second clock signals to odd- and even-numbered scan circuits respectively. The light emission elements are sequentially driven from a first to a last scan circuit when the second-clock signal is applied to the first scan circuit. The data-drive portion drives the common terminal. The clock-driver circuit outputs first and second clock pulses with different phases, and a third-clock pulse synchronized with the first and second clock pulses. The waveform-shaper circuit re-shapes the waveforms of the clock signals. | 10-04-2012 |
| 20120188327 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - An exposure device includes a plurality of light emitting elements provided on a substrate, a plurality of hologram elements multiplexing-recorded in correspondence with the plurality of light emitting elements, respectively, such that, when the plurality of light emitting elements are made to emit light in the recording layer arranged on the substrate, a plurality of condensing points having light components emitted from two or more light emitting elements and condensed on one point, is formed, and a condensing point row extending in a predetermined direction is formed on the face to be exposed, and a driving unit that drives the plurality of light emitting elements, respectively. | 07-26-2012 |
| 20120081496 | IMAGE FORMING APPARATUS - A light sensor generates a detection signal upon receiving laser light. A rotation sensor generates a rotation signal in synchronization with rotation of a polygon motor. A mirror-rotation-signal generating section generates a mirror rotation signal, based on the detection signal. A motor-rotation-signal generating section generates a motor rotation signal, based on the rotation signal. A phase-difference measuring section measures a phase difference between the motor rotation signal and the mirror rotation signal A prediction-signal generating section generates a prediction signal that is delayed from the motor rotation signal by the phase difference. A switching section switches a control mode between: a mirror control mode in which the mirror rotation signal is used to control a rotational speed of the polygon mirror; and a prediction control mode in which the prediction signal is used to control the rotational speed. A motor driver drives the polygon motor in the selected control mode. | 04-05-2012 |
| 20120081495 | ORGANIC EL DEVICE, LIGHT SOURCE MODULE AND PRINTER - According to one embodiment, an organic EL device includes a substrate, a first translucent insulating film, a second translucent insulating film, a first electrode, a second electrode, and an emitting layer. The substrate has a first index of refraction. The first translucent insulating film is on the substrate, and the first insulating film has a second index of refraction higher than the first index of refraction. The second translucent insulating film is on the first insulating film, and the second insulating film has a third index of refraction lower than the second index of refraction. The first electrode is on the second insulating film, and the first electrode has a fourth index of refraction higher than the third index of refraction. The second electrode is facing the first electrode. The emitting layer is between the first electrode and the second electrode. | 04-05-2012 |
| 20110122217 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanning system for a K station includes a resin scanning lens and three reflecting mirrors. Two reflectance ratios are calculated: one being the reflectance ratio of a luminous flux traveling toward the scanning start position of a drum-shaped photosensitive drum and the other being the reflectance ratio of a luminous flux traveling toward the scanning end position of the photosensitive drum. The magnitude relation between the two reflectance ratios is such that the reflecting mirror has an inverse magnitude relation to that of the other reflecting mirrors. Moreover, the difference is calculated between the largest value and the smallest value of the reflectance ratio, where the reflectance ratio depends on the angle of deviation of the polygon mirror. The reflecting mirror has the largest difference among the three reflecting mirrors. | 05-26-2011 |
| 20110122216 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - In a printing device provided with a multi-laser beam, an image gradation occurs due to a difference in characteristics between respective beams. The output beam number is changed by referring to a profile (curvature, tilt, polarity and beam scan interval) of each laser beam to perform a print at an engine rotation speed corresponding to the beam number. | 05-26-2011 |
| 20100328415 | SECURITY LASER PRINTING FILM - A laser markable security laser transfer film includes a carrier web formed from a laser light-transmissive material and a taggant-containing film disposed on the carrier web. The taggant-containing film is formulated from an energy sensitive taggant capable of withstanding temperatures of at least about 1800° F. to about 2200° F. The taggant absorbs energy at a first predetermined wavelength and, in response, emits energy at a second predetermined wavelength that is different from the first wavelength. The taggant-containing film further includes a polymeric resin. The taggant-containing film is disposed on the object to be marked with the taggant-containing film adjacent the object, and laser light is directed through the film to fuse the taggant-containing film onto the object to form a taggant-containing marking on the object. When the taggant-containing marking is subjected to energy at the first predetermined wavelength, the taggant-containing marking on the object is excited and in response emits energy at the second predetermined wavelength. | 12-30-2010 |
| 20100328414 | Optical Scanning Device and Image Forming Apparatus Equipped with the Same - An optical scanning device includes a light source for emitting first light beams, a deflecting unit that deflects the first light beams as second light beams having scanning lines that are substantially arc shaped, a scanning lens disposed in a light path of one of the second light beams, and a light-blocking member interposed between the deflecting unit and the scanning lens. The light-blocking member blocks reflected light generated from the one of the second light beams when the second light beam enters the scanning lens. The light-blocking member protrudes toward the second light beam path along at least a scanning area of the second light beam, and includes a protruding edge section curving in substantially a same arc shape as the scanning line. | 12-30-2010 |
| 20100328413 | OPTICAL SCANNING APPARATUS - An optical scanning apparatus includes a light source configured to emit a light beam, a scanning unit configured to deflect the light beam from the light source so as to scan a photosensitive member, an optical lens configured to guide the light beam scanned by the scanning unit onto the photosensitive member, and a lens supporting unit having a fixing portion configured to fix the optical lens, wherein the lens supporting unit includes a movable supporting portion configured to restrict movement of the optical lens in a direction perpendicular to a scanning direction of the light beam and an optical axis direction of the optical lens, to restrict movement of the optical lens in the optical axis direction, and to support the optical lens movably in the scanning direction. | 12-30-2010 |
| 20120320140 | LIGHT BEAM EMISSION APPARATUS AND IMAGE FORMING APPARATUS INCLUDING LIGHT BEAM EMISSION APPARATUS - A light beam emission apparatus separates, via a half mirror, apart of a laser beam emitted from a semiconductor laser towards a photosensitive member, guides the separated laser beam to an optical sensor to detect a light quantity, and controls the light quantity based on the detected result. The light beam emission apparatus includes a first light blocking member located between the semiconductor laser and the half mirror, and a second light blocking member located between the half mirror and the optical sensor. | 12-20-2012 |
| 20110234743 | DRIVE DEVICE, PRINT HEAD AND IMAGE FORMING APPARATUS - A drive device to drive a plurality of three-terminal light emitting elements includes a drive circuit. The drive circuit includes a first and second conductive type MOS transistor complementarily connected to each other and configured to drive three-terminal light emitting elements that are in conduction state based on a received drive signal. The first conductive type MOS transistor is formed in a substrate region and includes a channel formation region, which is a region wherein a channel is to be formed. An impurity with the same polarity as that of the substrate region is injected in the channel formation region. | 09-29-2011 |
| 20110310211 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes an enclosure having a plurality of windows covered with transparent members. The enclosure houses a plurality of light sources, a scanning portion, optical elements and a light amount attenuation portion. The scanning portion deflects each of a plurality of light beams emitted from a plurality of light sources at a constant angular speed in a main scanning direction. The optical elements constitute respective light paths from the scanning portion to the windows for the plurality of light beams, respectively. The light amount attenuation portion attenuates light amount in a light path of a first light source among the plurality of light sources in a downstream side of the position where a light beam emitted from a second light source enters as stray light. The drive portion drives the first light source so as to compensate for light amount attenuated by the light amount attenuation portion. | 12-22-2011 |
| 20120327169 | EXPOSURE APPARATUS, ADJUSTMENT METHOD THEREFOR, AND IMAGE FORMING APPARATUS - An exposure apparatus of the present invention, including a plurality of laser light sources (LDs), obtains reference data used for limiting a driving current within an allowable range at the time of APC with respect to each LD. The reference data on the first laser light source (LD | 12-27-2012 |
| 20130010048 | SHEETING WITH COMPOSITE IMAGE THAT FLOATS - Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting. | 01-10-2013 |
| 20110157295 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - An exposure device of an aspect of the present invention includes an exposure unit that is provided between a body to be exposed and a component and that exposes the body to be exposed; and an electrical connection member that is electrically connected to a connecting portion disposed in the exposure unit and includes a first bent portion formed by bending the electrical connection member at an outer side of a clearance between the body to be exposed and the component and a second bent portion formed by bending the electrical connection member on an opposite side of the exposure unit with respect to the first bent portion. | 06-30-2011 |
| 20110157294 | METHOD AND DEVICE FOR MARKING OBJECTS AND MATERIALS - A material marking method includes: generating a code; randomly selecting at least one area of the material; and marking by laser shot on the surface of, or inside the material in each the area of the material to represent the code there in a way that cannot be detected by the naked eye. Preferentially, the randomly selecting step is performed for each item of material to be marked. Preferentially, during the code generating step, a two-dimensional bar code is generated, and during the marking step, the two-dimensional bar code is represented. Preferably, the method includes marking the material in order to represent a mark visible to the naked eye, at least one part of a marking area of a mark visible to the naked eye is selected randomly and/or the visible mark bears an item of information representative of the position of at least one area where the code that cannot be detected by the naked eye is represented. | 06-30-2011 |
| 20130135419 | LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A light scanning apparatus, including: a light source; a light deflector configured to deflect a light beam emitted from the light source to scan a photosensitive member; an optical member configured to guide the light beam the photosensitive member; a housing configured to contain the light source, the light deflector, and the optical member; a cover member configured to be attached to a side wall of the housing so as to keep dust out of the light scanning apparatus; and an elastic member having a first abutment portion which is attached to the cover member and is elastically deformed by abutting the side wall, and a second abutment portion which is elastically deformed to abut the side wall according to elastic deformation of the first abutment portion when the cover member is attached to the housing. | 05-30-2013 |
| 20120249715 | LIGHT EMITTING APPARATUS, PRINT HEAD AND IMAGE FORMING APPARATUS - A light emitting apparatus includes a plurality of light emitting chips, a first wire, a second wire, a third wire, and a fourth wire. The plurality of light emitting chips each have a plurality of light emitting devices and are divided into a plurality of chip groups, the light emitting devices in each of the light emitting chips being divided into a plurality of device groups. The first wire transmits in common a transmission signal to the light emitting chips. The second wire transmits in common a first selection signal to a given chip group of the light emitting chips. The third wire transmits in common a second selection signal to a set of the device groups. The fourth wire transmits a turn-on control signal to each of the chip groups. | 10-04-2012 |
| 20130093827 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - An optical scanning device includes an air-tight casing, an air-tight container and a tube-like member. The air-tight casing is configured to accommodate at least a polygon mirror and a driving unit that rotates the polygon mirror. The air-tight container is disposed at a distance from the air-tight casing and outside an outer wall surface vertically above the air-tight casing. The tube-like member is configured to communicatively connect an inside of the air-tight casing and an inside of the air-tight container. | 04-18-2013 |
| 20130100225 | IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes a photoconductive drum, a line-type LED exposing unit disposed to be opposed to the photoconductive drum, an exposing unit supporting tray configured to support the LED exposing unit to be capable of approaching and separating from the photoconductive drum in a radial direction of the photoconductive drum, an extending piece being formed in a part of an end of the exposing unit supporting tray, and a rod member disposed in parallel to the major axis direction of the LED exposing unit and moved in the major axis direction to thereby cause the LED exposing unit to approach and separate from the photoconductive drum in the radial direction of the photoconductive drum via the extending piece of the exposing unit supporting tray. | 04-25-2013 |
| 20130100226 | IMAGE-FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE-FORMING APPARATUS - This image-forming apparatus includes a plurality of photosensitive drums, a plurality of laser scanning units, and a motor control unit. A motor control unit detects the time difference between a change point of the detection signal of a reference color and the change points of colors targeted for phase correction, and, when the absolute value of the time difference is greater than a threshold, carries out a rough adjustment process for reducing the time difference by a drive signal with which a base period has been changed by a first period change amount and thereafter carries out a fine adjustment process for reducing the time difference by a drive signal with which the base period has been changed by a second period change amount smaller than the first period change amount. | 04-25-2013 |
| 20130120517 | METHOD FOR MARKING A TRANSPARENT CONTAINER - The present invention relates to a method for marking a container comprising at least a transparent wall comprising the following steps: | 05-16-2013 |
| 20130127974 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus, including: a light source; an incident optical system; and an imaging optical system, in which: the imaging optical system includes at least one plastic lens; in a sub-scanning section, principal rays of the beams intersect each other on an optical axis of the imaging optical system; the principal rays intersect each other at different positions between a case of entering a central region of the at least one plastic lens and a case of entering an end region of the at least one plastic lens; and the principal rays entering one of the central region and the end region of the at least one plastic lens intersect each other, and the principal rays entering another of the central region and the end region of the at least one plastic lens intersect each other. | 05-23-2013 |
| 20130127973 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus for scanning a target surface using a plurality of light beams simultaneously along a first direction of the target surface. The apparatus has a light source having a plurality of light emitting elements; an optical deflector to deflect the plurality of light beams coming from the light source; and a scanning optical system to guide the plurality of light beams deflected by the optical deflector to the target surface. The scanning optical system includes a lens, disposed after the optical deflector, having the strongest power in a second direction perpendicular to the first direction. A plurality of scan lines, corresponding to the plurality of light beams deflected by the optical deflector, intersect or contact each other at an optical face of the lens. | 05-23-2013 |
| 20130141509 | LASER SCANNING UNIT AND COLOR IMAGE FORMING APPARATUS INCLUDING THE SAME - A laser scanning unit and a color image forming apparatus using the laser scanning unit. The laser scanning unit includes a deflector that is rotatable to deflect a plurality of light beams that are incident on the deflector from a plurality of light sources at an angle with respect to a sub-scanning direction; at least one optical path changing member to change an optical path of each of the light beams deflected by the deflector; and a first f-θ lens to focus the light beam that passes through the optical path changing member onto a corresponding scanning target surface. | 06-06-2013 |
| 20130141510 | IMAGE FORMING APPARATUS HAVING POLYGON MIRROR FORMED WITH A PLURALITY OF REFLECTION SURFACES - An image forming apparatus includes: a polygon mirror formed with a plurality of reflection surfaces, and a generating device configured to generate a pulse signal required to modulate a laser beam based on image data. The generating device is further configured to generate a pulse signal by inserting or deleting a pulse signal having a width smaller than a width of a pulse signal corresponding to one pixel of the image data into or from a pulse signal corresponding to the image data based on information associated with deviation amounts between lengths of scanning lines formed by the plurality of reflection surfaces and a reference value, so as to adjust the lengths of the scanning lines formed by the plurality of reflection surfaces to be closer to the reference value. | 06-06-2013 |
| 20130141511 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive member, a charging unit configured to charge the photosensitive member, an exposure unit configured to expose the charged photosensitive member with first laser power to generate a non-image portion potential in a non-image portion of the photosensitive member and with second laser power different from the first laser power to generate an image portion potential in an image portion of the photosensitive member, a development unit configured to form a developer image by applying a developer to a portion of the image portion potential, a control unit configured to control the laser power of the exposure unit, and a storage unit configured to store information about the photosensitive member obtained when the photosensitive member is brand-new. The control unit changes an output of the first laser power according to the information about the photosensitive member stored in the storage unit. | 06-06-2013 |
| 20130147895 | OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS AND OPTICAL SCANNING METHOD - An optical scanning device includes a plurality of light sources configured to emit a plurality of light beams, respectively; an optical deflector having a deflection-reflection surface that deflects and reflects the light beams, each of the light beams being incident on the deflection-reflection surface at an oblique incident angle, the oblique incident angles of the light beams being different from one another; and a flat glass arranged to be tilted at a tilt angle with respect to the deflection-reflection surface in a sub-scanning direction, the light beams being incident on the deflection-reflection surface via the flat glass, the tilt angle being smaller than a largest one of the oblique incident angles of the light beams. The light beams deflected and reflected by the deflection-reflection surface are incident on a plurality of scanned surfaces via the flat glass, respectively. | 06-13-2013 |
