Class / Patent application number | Description | Number of patent applications / Date published |
399221000 | Modifier (e.g., reflector, filter) | 48 |
20080219705 | IMAGE FORMING APPARATUS AND LIGHT SCANNING UNIT THEREOF - An image forming apparatus including a photosensitive member on which an electrostatic latent image is formed, a light scanning unit to scan a light beam onto the photosensitive member so as to form an electrostatic latent image, a developing unit to apply developer onto the photosensitive member formed with the electrostatic latent image, so as to form a visible image, and a transfer unit to transfer the visible image, formed on the photosensitive member, onto a printing surface. The light scanning unit includes a case having a light emitting window to emit a light beam toward the photosensitive member, a light source installed in the case to generate the light beam, a polygon mirror to deflect the light beam generated from the light source toward the light emitting window, a rotor coupled with the polygon mirror to rotate the polygon mirror, a stator fixed to the case and adapted to rotate the rotor via electromagnetic interaction with the rotor, and a stop-position controller to control a stop position of the rotor so that the polygon mirror does not reflect the light beam through the light emitting window when the polygon mirror stops rotating. | 09-11-2008 |
20080240787 | Image Forming Method and Recorded Matter - An image forming method is provided to attain a higher security for preventing forgery and falsification of information by using an optical diffraction structure. In a body ( | 10-02-2008 |
20080253808 | Image Forming Method and Apparatus - An image forming method using an image forming apparatus including: a latent image carrier whose surface is driven in a sub scanning direction; a deflector which scans a beam spot reciprocally in a main scanning direction substantially perpendicular to the sub scanning direction on the surface of the latent image carrier in the use of an oscillating deflect mirror so as to form spot latent images each of which formed on a pixel; developer which develops each of the spot latent images as a pixel-dot, the method includes of: halftoning for a tone reproduction in which a halftone-dot constituted by the pixel-dot(s) is formed on a cell consisting plural pixels according to a fattening type threshold matrix, wherein a plurality of cells are contiguously arranged in the main scanning direction so as to form a plurality of contiguous locations at each of which the cells adjoin mutually in the main scanning direction, each cell includes a larger-than-four even number of pixels in the sub scanning direction, and the cells, which mutually adjoin at a particular contiguous location out of the plurality of contiguous locations, are mutually shifted by an odd number of pixel(s) in the sub scanning direction. | 10-16-2008 |
20080267665 | Optical device - The invention comprises a laser beam source that emits a laser beam; a reflecting means that has a plurality of reflecting members and reflects the laser beam emitted from said laser beam source; a deflecting and scanning means that deflects and scans with the laser beam reflected by said reflecting means; and an adjusting means that moves at least part of said reflecting members, and adjusts the size of the laser beam entering the deflecting and scanning means. | 10-30-2008 |
20080298842 | LIGHT SOURCE DRIVER, LIGHT SOURCE DEVICE, LIGHT SCANNING DEVICE AND IMAGE FORMING APPARATUS - A light source driver mounted on a rectangular-shaped substrate includes a plurality of output parts that output driving signals to drive a plurality of light-emitting bodies. The plurality of output parts are disposed in a vicinity of the two sides of the substrate, the two sides of the substrate forming a corner of the substrate. | 12-04-2008 |
20090003883 | OPTICAL SCANNING UNIT AND ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS INCLUDING THE SAME - An optical scanning unit that deflects light in a main scanning direction to radiate the light on an exposure object. The optical scanning unit includes a light source having a signal terminal, and a circuit board having a slot-shaped inserting portion into which the signal terminal is inserted. | 01-01-2009 |
20090016774 | IMAGE FORMING APPARATUS, SCANNING OPTICAL APPARATUS, AND CONTROL METHODS THEREOF - The present invention provides an image forming apparatus that adjusts the amount of light of a light-emitting unit with high accuracy and suppresses an increase in control time that is required to adjust the amount of light, a scanning optical apparatus, and control methods thereof. To accomplish this, the image forming apparatus of the present invention derives a threshold current and a bias current of the light-emitting unit. Further, the image forming apparatus of the present invention supplies the bias current to the light-emitting unit when causing the light-emitting unit to emit light in an amount of light corresponding to the minimum density level, and supplies a current that is larger than the threshold current to the light-emitting unit when causing the light-emitting unit to emit light in an amount of light corresponding to a density level that is larger than that minimum density level. | 01-15-2009 |
20090052945 | IMAGE FORMING APPARATUS - By using an embodiment of the invention, an image forming apparatus capable of reducing time required until a monochromatic image output frequently used for image formation is outputted, having the number of output sheets per unit time in outputting a color image equivalent to that in the output of the monochromatic image, and capable of securing durability for an exposing system used for the output of the monochromatic image frequently used for image formation equivalent to that of an exposing system for the color image is obtained. | 02-26-2009 |
20090060582 | OPTICAL SCANNING DEVICE AND METHOD FOR ADJUSTING ERRORS - In an optical scanning device, a lateral magnification in a direction corresponding to a sub scanning direction of an optical system is adjusted to be small by a coupling optical system that includes a first lens and a second lens. As a result, scanning by a plurality of light beams can be performed with high precision while avoiding high costs. | 03-05-2009 |
20090060583 | Light source unit, optical scan apparatus, and image formation apparatus - A light source unit is provided which includes a light source with a plurality of light emission portions two-dimensionally arranged; a substrate on which the light source is mounted; a first support portion supporting the substrate; a bias member biasing the substrate towards the first support portion; a coupling element coupling a light beam emitted from the light source; a second support portion supporting the coupling element; and a holding member holding a position of the substrate relative to the first support portion. | 03-05-2009 |
20090074464 | Exposing Device and Image Forming Apparatus Including The Same - An exposing device includes a light-emitting element array including plural light-emitting elements disposed in a first direction and a second direction orthogonal to or substantially orthogonal to the first direction, a lens array including plural lenses that focus lights from the light-emitting elements, a supporting member that supports the light-emitting element array and the lens array, and an exposure-position adjusting mechanism including a rotation adjusting unit that rotates the supporting member around or substantially around an axis in the first direction. | 03-19-2009 |
20090136263 | MIRROR AND OPTICAL SCANNING DEVICE - A mirror includes a substrate, a reflection layer, and a protection layer. The substrate includes a surface having an attachment area and a reflection area. The reflection layer is formed on the reflection area. The protection layer is formed on the reflection area on which the reflection layer is formed and the attachment area. Material of the protection layer is homogeneous across the reflection area and the attachment area. | 05-28-2009 |
20090136264 | METHOD AND APPARATUS FOR IMAGE FORMING, AND COMPUTER PROGRAM PRODUCT - An image forming apparatus includes a light source, a polygon mirror, and a plurality of photosensitive elements. The polygon mirror has a plurality of reflection surfaces that reflect a light beam at different angles. The light beams deflected by the reflection surfaces travel along different optical paths and impinge on different photosensitive elements. A light-beam control unit controls emission of the light beam from the light source depending on a distance between the deflecting unit and the photosensitive elements thereby performing an fθ correction of the light beam. | 05-28-2009 |
20090175656 | IMAGE FORMING APPARATUS - An image forming apparatus having improved arrangement of photosensitive members and configuration of a light scanning device to enable size reduction is described. The image forming apparatus includes a plurality of photosensitive members, a light scanning device to irradiate light beams to the plurality of photosensitive members, so as to form electrostatic latent images on the photosensitive members, a plurality of developers to supply a developing agent to the photosensitive members, so as to form visible images on the photosensitive members, and a transfer drum disposed in contact with the photosensitive members and used to transfer the visible images such that the visible images overlap one another. Scanning lines, which are formed on the plurality of photosensitive members, respectively, by the light scanning device, are arranged in at least two different planes. | 07-09-2009 |
20090175657 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - In an optical scanning device, when pixel density is taken to be n, number of the light beams is taken to be b, and number of the deflection surfaces of a deflecting unit is taken to be p, a spatial frequency S denoted by S=1/(1/(25.4/n×b×p) is within a range of a spatial frequency characteristic for a visual perception system of a high relative luminous efficiency. When spacing between ends in a sub-scanning direction of a scanning line formed by one scan by the deflection unit is taken to be L | 07-09-2009 |
20090214261 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device that scans a scanning surface with a light beam includes a light source that emits the light beam and a pre-deflector optical system that includes at least one diffractive optical element including a diffraction surface having no power at room temperature. The diffraction surface has a multi-step shape having a plurality of zone surfaces substantially perpendicular to an optical axis and a plurality of step surfaces each adjacent to each of the zone surfaces. On a cross sectional plane of the diffraction surface including the optical axis, each of the zone surfaces and each of the step surfaces makes an obtuse angle. | 08-27-2009 |
20090252537 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An optical deflector includes a driving mirror, which is driven to rotate and has a deflecting surface for deflecting an incident light. Gratings are formed on the deflecting surface, each grating having a shape that makes the intensities of light beams diffracted at a positive order and a negative order different from each other. A main scanning line formed by a trace of the deflected light according to the rotation of the driving mirror is a straight line. The optical deflector is used in an optical scanning apparatus with a light source. The optical scanning apparatus is utilized in an image forming apparatus for forming an electrostatic latent image onto an exposure object. | 10-08-2009 |
20090285602 | SURFACE EMITTING LASER ELEMENT, SURFACE EMITTING LASER ARRAY, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - In a surface emitting laser element, on a substrate whose normal direction of a principal surface is inclined, a resonator structural body including an active layer, and a lower semiconductor DBR and an upper semiconductor DBR sandwiching the resonator structural body are stacked. A shape of a current passing through region in an oxide confinement structure of the upper semiconductor DBR is symmetrical to an axis passing through a center of the current passing through region parallel to an X axis and symmetrical to an axis passing through the center of the current passing through region parallel to a Y axis, and a length of the current passing through region is greater in the Y axis direction than in the X axis direction. A thickness of an oxidized layer surrounding the current passing through region is greater in the −Y direction than in the +X and −X directions. | 11-19-2009 |
20090297223 | LIGHT SOURCE HEAD AND IMAGE FORMING APPARATUS - A self-scanning light source head comprising: a substrate, surface emitting semiconductor lasers arranged in an array on the substrate, and at least one thyristor disposed on the substrate and serving as a switching element selectively turning ON and OFF light emission of the surface emitting semiconductor lasers, and an image forming apparatus using the same are provided. | 12-03-2009 |
20090317137 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - Disclosed is an optical scanning device including a light source including multiple light-emitting elements, the multiple light-emitting elements being arranged in a linear manner, a collimator lens to collimate a light beam from the light source, a light-deflecting device to deflect a light beam having passed through the collimator lens to a medium to be scanned and scan the medium with the light beam, and a rear optical system arranged in an optical path between the collimator lens and the medium to be scanned, wherein the collimator lens deviates an image surface in a direction opposite to an image surface deviation on the medium to be scanned by a nearly same amount as the image surface deviation, the image surface deviation being caused by a change of an image height of the light source, and the change being caused by the rear optical system. | 12-24-2009 |
20090324293 | IMAGE FORMING APPARATUS - An image forming apparatus includes photosensitive drums including one for black, light source devices, a rotary polygonal mirror having deflecting surfaces with chamfers, input optical systems, imaging optical systems and a synchronism detecting system for detecting a synchronizing light beam for determining the timing for scanning each of the photosensitive drums in a main scan direction, wherein the synchronism detecting system detects a light beam for forming an image of a color different from the black, and wherein the timing as the synchronism detecting device obtains a synchronizing signal and the timing as a light beam from the input optical system, which is at the side where the synchronism detecting device is provided, is incident on the chamfer of the deflecting surface of the rotary polygonal mirror, are at least partly overlapping. | 12-31-2009 |
20100014892 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS USING SAME - There are provided a compact light scanning apparatus including a deflection unit for deflectively scanning light fluxes, and an imaging optical systems provided for the respective light fluxes. When the light fluxes deflectively scanned by the deflection unit are focused onto different photosensitive drums by the imaging optical systems, through a mirror. One of the imaging optical systems includes a transmission type imaging optical element. In a sub-scanning section, the principal ray of a light flux passing through the transmission type imaging optical element passes a side opposite to the optical path of the light flux deflectively scanned by the deflection unit and traveling toward the mirror of another imaging optical system among the imaging optical systems with respect to a straight line connecting the surface vertex of the incidence surface of the transmission type imaging optical element and the surface vertex of the emergence surface thereof. | 01-21-2010 |
20100028049 | IMAGE FORMING APPARATUS - An image forming apparatus including: a cylindrical photoconductor; a laser scanning section that includes a polygonal mirror and allows a laser beam to reflect off the polygonal mirror and then irradiate a peripheral surface of the photoconductor, so that an electrostatic latent image is formed; an image development section for developing the electrostatic latent image; and a toner storage section for storing the toner to be supplied to the image development section, wherein the image development section is disposed lower than a central axis of the photoconductor, the toner storage section is disposed above the image development section so as to form a space therebetween, and the laser scanning section is disposed so that the rotation axis of the polygonal mirror extends in a vertical direction, and the laser beam reflected from the polygonal mirror reaches to the photoconductor through the space and irradiates a portion of the peripheral surface, which is higher than the central axis of the photoconductor. | 02-04-2010 |
20100034563 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - P-polarized light beam passing through an fθ lens passes through a polarization beam splitter, is converted into S-polarized light beam by a quarter-wave plate and a reflecting mirror, re-enters the polarization beam splitter, and is reflected at the polarization beam splitter in the −Z direction. An optical path of a light beam between a polygon mirror and the fθ lens, between the fθ lens and the polarization beam splitter, between the polarization beam splitter and the quarter-wave plate, between the quarter-wave plate and a reflecting mirror, between the reflecting mirror and the quarter-wave plate, and between the quarter-wave plate and the polarization beam splitter are in the same plane. | 02-11-2010 |
20100067955 | SCANNING OPTICAL APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME - Provided is a scanning optical apparatus capable of forming a high quality image while manufacture of an imaging optical system is facilitated, a length of the apparatus in a direction of height is reduced, and unevenness of illuminance distribution (light amount distribution) on a scanned surface is reduced. The scanning optical apparatus includes a single deflecting unit which deflects respective light beams from multiple light source units toward multiple scanned surfaces by different deflection surfaces, multiple incident optical systems each disposed in each light source unit, multiple optical systems which image the respective light beams on the multiple scanned surfaces, and multiple optical path changing units disposed in the respective optical paths between the single deflecting unit and the multiple scanned surfaces. A thin-film characteristic of each of the optical path changing units is different between the respective optical paths. | 03-18-2010 |
20100150612 | OSCILLATOR DEVICE AND METHOD OF MANUFACTURING THE SAME - An oscillator device includes a supporting member, a movable member, an elastic supporting member configured to elastically support the supporting member and the movable member around an oscillation axis, and a driving member configured to drive the movable member, wherein the elastic supporting member includes a plurality of springs and at least one spring constant adjusting member configured to couple the plurality of springs with each other. | 06-17-2010 |
20100166464 | LIGHT SCANNING UNIT CAPABLE OF COMPENSATING FOR ZIGZAG ERROR, IMAGING APPARATUS HAVING THE SAME, AND METHOD OF COMPENSATING FOR ZIGZAG ERROR OF THE LIGHT SCANNING UNIT - Provided are a light scanning unit capable of compensating for a zigzag error, an imaging apparatus having the same, and a method of compensating for a zigzag error of the light scanning unit. The light scanning unit may scan light beams using an oscillation mirror configured to rotatably oscillate. The light scanning unit may deflect light beams in a sub-scan direction in synchronization with the rotatable oscillation of the oscillation mirror, thereby compensating for a zigzag error caused by reciprocative scanning of the oscillation mirror. | 07-01-2010 |
20100183338 | Line Head and Image Forming Apparatus - An image forming apparatus includes a latent image carrier on which a latent image is formed; and a line head. The line head includes light-emitting elements arranged in a first direction; an aperture diaphragm; and an optical system that images light emitted from the light-emitting elements on a latent image carrier. The aperture diaphragm and the optical system are arranged in a second direction that is orthogonal to or substantially orthogonal to the first direction; and among the lenses included in the optical system, a lens located at the position closest to the aperture diaphragm is a multifocal lens. | 07-22-2010 |
20100189467 | SURFACE EMITTING LASER, SURFACE EMITTING LASER ARRAY, OPTICAL SCANNING DEVICE,IMAGE FORMING APPARATUS, OPTICAL TRANSMISSION MODULE AND OPTICAL TRANSMISSION SYSTEM - A disclosed surface emitting laser is capable of being manufactured easily, having a higher yield and a longer service lifetime. In the surface emitting laser, a selectively-oxidized layer is included as a part of a low refractive index layer of an upper semiconductor distribution Bragg reflector; the low refractive index layer including the selectively-oxidized layer includes two intermediate layers adjoining the selectively-oxidized layer and two low refractive index layers adjoining the intermediate layers. Al content rate in the intermediate layers is lower than that in the selectively-oxidized layer, and Al content rate in the low refractive index layers is lower than that in the selectively-oxidized layer. This configuration enables providing more control over the thickness and oxidation rate of the oxidized layer, thereby enabling reducing the variation of the thickness of the oxidized layer. | 07-29-2010 |
20100215404 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - The present invention provides an image reading device in which light guiding paths can be formed in a simple structure and adjustment of irradiation position of light irradiated onto the original is easy, including: a luminescence portion; a light guiding body including a first light incidence portion disposed on a luminescence portion side and a first light emission portion disposed on an original side; a first reflective surface connecting the first light incidence portion and the first light emission portion in the light guiding body; a light guiding space constitutive member including a second reflective surface facing the first reflective surface; a light guiding space formed between the first reflective surface and the second reflective surface, having a second light incidence portion disposed on an illumination portion side and a second light emission portion disposed on the original side; a mirror; an imaging lens; and a reading portion. | 08-26-2010 |
20100290811 | OPTICAL COMPONENT BOWING DEVICE, OPTICAL DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - An optical device includes an optical component that reflects or shapes a light beam. In a particular embodiment, the optical device can include a bending moment generating structure that generates a bending moment in a supported portion of the optical component. The optical device can also include an adjusting mechanism that adjusts the bowing amount of the optical component by adjusting the bending moment of the bending moment generating structure. | 11-18-2010 |
20100322669 | RED SURFACE EMITTING LASER ELEMENT, IMAGE FORMING DEVICE, AND IMAGE DISPLAY APPARATUS - A red surface emitting laser element includes a first reflector, a second reflector including a p-type semiconductor multilayer film, an active layer between the first reflector and the second reflector, and a p-type semiconductor spacer layer between the active layer and the second reflector, the p-type semiconductor spacer layer having a thickness of 100 nm or more and 350 nm or less. | 12-23-2010 |
20110052263 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanner includes a light source including light emitters, an aperture member collimating light beams from the light source, a deflector deflecting the light beams passing through the aperture member, and a scanning optical system condensing the deflected light beams onto a scanned surface to optically scan the surface in a main-scanning direction. The scanning optical system includes a resin scanning system having at least one resin scanning lens. At least one folding mirror/sheet glass is disposed between a scanning lens nearest to the deflector in the resin scanning system and the scanned surface. At least one scanning lens in the resin scanning system has an uneven birefringence distribution with respect to a sub-scanning direction. An optical conjugate image of the aperture member is formed between a lens surface nearest to the deflector in the resin scanning system and a lens surface nearest to the scanned surface with respect to the sub-scanning direction. | 03-03-2011 |
20110123227 | SURFACE-EMITTING LASER ELEMENT, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A surface-emitting laser element includes a substrate; a plurality of semiconductor layers laminated on the substrate, the plural semiconductor layers including a resonator structural body including an active layer and semiconductor multilayer film reflection mirrors having the resonator structural body sandwiched therebetween; an electrode provided in such a manner as to surround a emitting region on a surface of the surface-emitting laser element from which light is emitted; and a dielectric film provided in the emitting region such that a reflection ratio of a peripheral part of the emitting region is different from a reflection ratio of a center part of the emitting region. Edge portions that are near edges of the dielectric film are tilted with respect to the surface. | 05-26-2011 |
20110129259 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A housing ( | 06-02-2011 |
20110262185 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND MIRROR ADJUSTING METHOD - An exposure device includes a mirror to reflect light used for exposure of an object, a holder to hold the mirror, an adhesive that bonds the mirror to the holder and elastically deforms, and an adjusting tool that pushes the mirror to change a direction of the mirror. | 10-27-2011 |
20120121297 | SURFACE-EMITTING LASER, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A surface-emitting laser includes a substrate; a lower semiconductor multilayer film reflector disposed on the substrate; a resonator structure including an active layer and disposed on the lower semiconductor multilayer film reflector; and an upper semiconductor multilayer film reflector disposed on the resonator structure. The second semiconductor multilayer film reflector includes a confinement structure in which a current passage region is surrounded by an oxidized portion of a selectively oxidized layer containing aluminum. An emission region includes a central portion and a peripheral portion, the peripheral portion being covered with a transparent dielectric film whose reflectivity is lower than a reflectivity of the central portion. The selectively oxidized layer has a thickness in a range from 30 nm to 40 nm. The temperature at which an oscillation threshold current is minimized is 60° C. or lower. | 05-17-2012 |
20120141168 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS INCLUDING SAME - An optical scanner includes a light source to project light, a light deflector to deflect light, an optical element, and a holder to hold an optical element in place. The holder includes a curve adjustment mechanism, a first pressing member, a second pressing member, and a retainer. The curve adjustment mechanism adjusts a shape of the optical element in a sub-scanning direction relative to a scanning surface and perpendicular to a main scanning direction. The first pressing member is disposed at a first side from which the first pressing member presses the optical element in the sub-scanning direction. The second pressing member is disposed at a second side opposite the first side, to press the optical element from the second side. The retainer fixes substantially a center of the optical element in a main scanning direction of the light striking the optical element to the first side. | 06-07-2012 |
20120251183 | LIGHT IRRADIATION ELEMENT, IMAGE FORMING STRUCTURE, AND IMAGE FORMING APPARATUS - A light irradiation element includes a cavity through which light passes and a translucent light conduit bordering the cavity, allowing light to pass therethrough and transmitting the light passed through the cavity, the light irradiation element being disposed along a longitudinal direction of an image bearing body on which an electrostatic latent image is formed and directing the light passed through the light conduit to irradiate the image bearing body. | 10-04-2012 |
20130064576 | IMAGE FORMING APPARATUS HAVING VARIABLE DEVELOPER INTERVALS - An image forming apparatus including a plurality of developers and optical scanners, each of the optical scanners having a light source and a light reflecting unit and forming an electrostatic latent image on a photo conductor of each of the developers. The optical scanners have the same focusing distance from the light source to the photo conductor. 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. The plurality of developers include a yellow (Y) developer, a magenta (M) developer, a cyan (C) developer, and a black (K) developer. The optical scanners include a first optical scanner, which forms electrostatic latent images on two of the developers including the black (K) developer, and a second optical scanner, which forms electrostatic latent images on the other two developers. | 03-14-2013 |
20130164037 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A housing includes a base portion for installation of an optical beam emission unit, a light guiding unit, and a deflection unit, and a cover portion that includes an indented heat emission channel that transmits heat in an inner portion of the housing to a fluid. | 06-27-2013 |
20130177336 | SURFACE EMITTING LASER, SURFACE-EMITTING-LASER ARRAY, AND IMAGE FORMING APPARATUS - The present invention provides a surface emitting laser that provides a sufficient optical output and is suitable as a light source intended for electrophotographic apparatuses, and a surface-emitting-laser array and an image forming apparatus each including the surface emitting laser. | 07-11-2013 |
20130188993 | SURFACE-EMITTING SEMICONDUCTOR LASER, SURFACE-EMITTING SEMICONDUCTOR LASER DEVICE, OPTICAL TRANSMISSION DEVICE, AND INFORMATION PROCESSING DEVICE - A surface-emitting semiconductor laser includes a substrate, a first n-type semiconductor multi-layer reflecting mirror formed on the substrate including a pair of a high refractive index layer with a relatively high refractive index and a low refractive index layer with a low refractive index which are laminated, an n-type semiconductor layer formed on the first semiconductor multi-layer reflecting mirror, having an optical film thickness greater than an oscillation wavelength, and including Al and Ga, an active region formed on the semiconductor layer, and a second p-type semiconductor multi-layer reflecting mirror formed on the active region and including a pair of a high refractive index layer with a relatively high refractive index and a low refractive index layer with a low refractive index which are laminated, wherein an n-type impurity dopant injected into the semiconductor layer is a group VI material or Sn. | 07-25-2013 |
20130243487 | LIGHT PROJECTING DEVICE, IMAGE READING DEVICE INCLUDING SAME, AND IMAGE FORMING APPARATUS INCLUDING THE IMAGE READING DEVICE - A light projecting device includes a base board, a light guiding member, a holding member, a cover, and a positioning member. A plurality of light-emitting elements are arranged in a line on the base board in a main scan direction. The light guiding member faces a radiation surface of the light-emitting elements and guides light projected from the light-emitting elements to an irradiation region of an illuminated object. The holding member holds the base board. The cover covers the base board and the light guiding member. The positioning member positions the light guiding member on the holding member. The holding member and the cover sandwich the light guiding member positioned by the positioning member. The light projecting device includes the holding member, the light guiding member, the base board, and the cover as a single unit which is detachably mountable relative to a chassis of the light projecting device. | 09-19-2013 |
20130251408 | SURFACE EMITTING LASER ARRAY ELEMENT, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A surface emitting laser array element is disclosed that includes a lower distributed bragg reflector (DBR) that is formed on a substrate, an active layer that is formed on the lower DBR, and an upper DBR that is formed on the active layer. A mesa and a dummy mesa that is arranged at a periphery of the mesa are created by removing a portion of the upper DBR. The mesa forms a surface emitting laser, and a wiring is connected to an electrode that is formed on an upper face of the mesa. The wiring includes a portion that is arranged over an upper face of the dummy mesa, a side face of the dummy mesa, and a bottom face at a peripheral region of the dummy mesa extending along a longitudinal direction of the wiring. | 09-26-2013 |
20130251409 | OPTICAL SCANNING DEVICE, IMAGING FORMING APPARATUS, AND OPTICAL ELEMENT - An optical scanning device includes an optical element and an optical base. The optical element includes a first bonding surface, while the optical base includes a second bonding surface. A groove in which a bonding agent flows is formed in at least one of the first bonding surface of the optical element and the second bonding surface of the optical base. The optical element is bonded and fixed to the optical base through the first bonding surface and the second boding surface by means of the bonding agent. | 09-26-2013 |
20130251410 | Optical Scanner - An optical scanner includes a light source, optical deflector, mirror, first photosensitive drum, and second photosensitive drum. The light source emits a first light beam and a second light beam. The optical deflector deflects the first light beam and the second light beam. The mirror has a reflecting part that reflects the deflected first light beam and a passing part that passes the deflected second light beam. The passing part is displaced from the reflecting part. The first photosensitive drum performs a development with a first toner having a first color. The reflected first light beam scans the first photosensitive drum in a main scanning direction. The second photosensitive drum performs a development with a second toner having a second color different from the first color. The passed second light beam scans the second photosensitive drum in the main scanning direction. The first photosensitive drum and second photosensitive drum are arranged in a sub scanning direction orthogonal to the main scanning direction. | 09-26-2013 |
20160124340 | IMAGE FORMING APPARATUS THAT INDICATES OPERATING STATUS USING LUMINOUS BODY - An image forming apparatus includes an image forming section, a body housing, a protruding housing, a light diffusing portion, a light source, a light guide path, and a control unit. The image forming section performs image formation on a sheet. The body housing is formed by a box body with a top surface, and contains the image forming section. The protruding housing is located on the top surface, and has a top portion protruding upwardly above the top surface. The light diffusing portion is located in or near the top portion of the protruding housing. The light source is located inside the body housing or the protruding housing, and emits light. The light guide path guides light emitted by the light source to the light diffusing portion. The control unit controls illumination of the light source based on the information related to the image formation. | 05-05-2016 |