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Transfer

Subclass of:

399 - Electrophotography

399130000 - IMAGE FORMATION

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
399298000 Color 286
399310000 Electrostatic 143
399308000 By intermediate transfer member 85
399307000 Having simultaneous fixing 19
399318000 By pressure 6
399306000 From plural photoconductive members (e.g., duplex) 1
20090052953IMAGE FORMING APPARATUS - An image forming apparatus which has means for permitting transfer members to be impressed with respective optimal transfer voltages without increasing the manufacturing cost. In the image forming apparatus, a transfer belt is driven to rotate, and a plural number of photosensitive drums, which bear toner images, are arranged side by side in the rotating direction of the transfer belt. A plural number of transfer members are located opposite from the respective photosensitive drums via the transfer belt. The transfer members charge the transfer belt with a polarity opposite to the polarity of the toner. The gap in the rotating direction of the transfer belt between the photosensitive drum and the transfer member in the most upstream transfer section is the largest, and the gap in the rotating direction of the transfer belt between the photosensitive drum and the transfer member in the most downstream transfer section is the smallest.02-26-2009
399319000 Vibration 1
20100239335IMAGE FORMING APPARATUS - An image forming apparatus includes a first endless transfer belt, first extending members, a first transfer electric generator, a secondary transfer unit disposed outboard and at least partially facing the first endless transfer belt, and an ultrasonic vibration generator, including a vibration imparting part from which ultrasonic vibrations is applied to the first endless transfer belt. The secondary transfer unit and the first endless transfer belt form a transfer nip forming a transfer electric field due to a difference in electric potential therebetween. The first transfer electric field generator contacts the first endless transfer belt at a position other than a position disposed opposite the secondary transfer unit. The vibration imparting part contacts the first endless transfer belt at a position intermediate between the first transfer electric field generator and the secondary transfer unit in a direction of rotation of the first endless transfer belt.09-23-2010
Entries
DocumentTitleDate
20130039679IMAGE FORMING APPARATUS - An image forming apparatus includes: a photosensitive drum for bearing a toner image; a rotatable endless belt provided so that its outer surface opposes the drum; a rigid transfer roller, provided so as to contact an inner surface of the belt, for transferring the toner image from the drum onto the belt or a recording material conveyed by the belt by being supplied with a transfer bias, wherein a coefficient of static friction of a surface of the transfer roller is smaller than that of the inner surface of the belt; a stretching roller, provided so as to contact the inner peripheral surface of the belt, for stretching the belt, wherein a coefficient of static friction of a surface of the stretching roller is larger than that of the inner peripheral surface of the belt; and a cleaning member for cleaning the surface of the stretching roller.02-14-2013
20090202280ENDLESS BELT, TRANSFER UNIT, AND IMAGE FORMING APPARATUS - An aspect of the invention provides an endless belt in which a ten-point mean roughness of a surface of the endless belt is measured with scanning probe and is in a range from not less than 2.1 nm to not more than 11.0 nm. Thereby, poor transfer does not occur, and a highly fine image of high quality can be obtained.08-13-2009
20090067892PRESSURE-APPLYING DEVICE, TRANSFER DEVICE, AND IMAGE FORMING APPARATUS - A pressure-applying device includes a swingable unit body, a roller, an opposing member, a pressure-applying unit, and a drive-force transmitting unit. A swinging center of the unit body is set at a position distinct from a rotation center of the drive-force transmitting unit. A direction of action of driving force of the driving unit substantially coincides with a line joining the swinging center and a point at which pressure application force is applied by the pressure-applying unit. A direction of action of the pressure application force is substantially orthogonal to the direction of action of the driving force.03-12-2009
20100098465IMAGE FORMING APPARATUS - In the image forming apparatus of this invention, a bending habit is applied to a PET sheet by a heating iron to form an end mylar into an L shape. In a full-color mode, the end mylar presses an end of an intermediate transfer belt while being elastically deformed. In a black monochrome mode, the intermediate transfer belt is spaced from photosensitive drums by up to 2 mm compared with the full-color mode. Instead of the photosensitive drums spaced from the intermediate transfer belt, the end mylar regulates the end of the intermediate transfer belt in a vertical direction by a slightly small pressing force with a recovered bend, whereby flapping of the intermediate transfer belt is reduced.04-22-2010
20090202279IMAGE FORMING APPARATUS - An image forming apparatus operates in a marginless print mode in which the toner image is formed on a first region on a first image bearing member corresponding to a sheet size and a second region on the first image bearing member outside the first region. Reverse-transfer efficiency TR08-13-2009
20120070200IMAGE SCANNER, IMAGE FORMING APPARATUS AND IMAGE ADJUSTING METHOD OF IMAGE SCANNER - An image scanner includes: a light source that irradiates, with light, a recording medium on which an image is formed; a light receiving portion that receives light reflected by the recording medium; a generating portion that generates a light amount value from the light received by the light receiving portion; a measuring portion in which plural reflecting surfaces are disposed, the reflecting surfaces respectively having predetermined colors different from each other; and a processing portion that derives a correlation formula from a light amount value generated at predetermined reference time and from a light amount value generated when the reflecting surfaces in the measuring portion are irradiated with the light from the light source, the correlation formula expressing a time-varying change in the light source.03-22-2012
20080317516Image Forming Apparatus and Image Forming Method - An image forming apparatus includes: an image carrier that holds a toner image; an intermediate transfer body to which the toner image carried on the image carrier is transferred; an applicator that applies a protective agent which blocks cracks in the surface of the intermediate transfer body to the intermediate transfer body; and a controller that changes, in accordance with the degree of damage to the surface of the intermediate transfer body, the amount of the protective agent to be applied by the applicator to the surface of the intermediate transfer body.12-25-2008
20100189474ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An electrophotographic image forming apparatus for forming an image on a recording medium includes an apparatus body having an endless belt incorporated therein configured to transfer toner images formed on a plurality of image bearing members to the recording medium, and a supporting member configured to support the plurality of image bearing members and to be slidable between inner and outer positions of the apparatus body along the arranged direction of the plurality of image bearing members, wherein when the supporting member slides between the inner and outer positions of the apparatus body while at least one of the plurality of image bearing members is in contact with the belt, a force is applied to the belt to rotate the belt along the moving direction of the supporting member.07-29-2010
20100226691IMAGE FORMING APPARATUS - The image forming apparatus has: a unit including a transfer medium that circularly moves; an image forming section provided along a circulation direction of the transfer medium; a movement mechanism that moves the unit in a direction substantially perpendicular to a moving direction of the transfer medium, and enables the unit to move in a first direction so as to bring the unit into contact with the image forming apparatus and in a second direction so as to move the unit apart from the image forming apparatus; and a cushioning means for applying a load in directions opposite to moving directions of the unit when the unit is moved in the first and second directions, respectively, thereby to relax impact caused by motion of the unit.09-09-2010
20090074475Transfer Device and Image Forming Apparatus Including the Same - A transfer device includes: an image carrier belt having a base layer and an elastic layer; a first roller around which the image carrier belt is wound; a second roller around which the image carrier belt wound around the first roller and shifted; a third roller contacting the first roller via the image carrier belt; and a fourth roller contacting the second roller via the image carrier belt. A hardness H03-19-2009
20110176841DIGITAL IMAGE TRANSFER BELT AND METHOD OF MAKING - An image transfer belt is provided for use in digital printing applications which includes a base film layer having perforations therein which are filled with a conductive polymer layer to provide controlled conductivity to the belt. The belt further includes a compliant layer over the conductive polymer layer. The resulting belt exhibits electrical properties suitable for digital image transfer. These properties may be varied according to the desired application.07-21-2011
20130129393PRODUCING A DEINKABLE PRINT - A method of printing an image includes transferring a toner image onto an image-bearing side of a receiver to form a continuous or discontinuous toner image layer having a continuous or discontinuous visible surface. An ink image is printed onto the toner visible image, the ink including colorant or a functional component suspended or dissolved in a carrier fluid. As a result, at least 50% of the colorant or the functional component is absorbed into or adsorbed onto the toner. The toner visible image and ink image are then fixed to the receiver. The functional component is selected from the group consisting of a colorant, a humectant, a surfactant, a security material, a fungicide, and a biocide.05-23-2013
20100310280SHEET SKEW CORRECTING DEVICE OF IMAGE FORMING APPARATUS - A sheet skew correcting device includes a first sheet conveyance unit which a conveyance force at a center side is smaller than a conveyance force at a first side, a second sheet conveyance unit which is adjacent to the first sheet conveyance unit across the center and a conveyance force at the center side is smaller than a conveyance force at a second side, a first drive unit to drive the first rotator, a second drive unit to drive the third rotator, a detection unit to detect an inclination of the sheet, and a control unit to control the first drive unit and the second drive unit based on a detection result of the detection unit.12-09-2010
20110116844IMAGE FORMING APPARATUS OR TRANSFER ROLLER USED IN IMAGE FORMING APPARATUS - An image forming apparatus includes a transfer roller. The transfer roller includes an elastic layer disposed on a metal core bar. The elastic layer is made of a non-foamed solid rubber. The surface of the elastic layer includes a plurality of convex portions extending in a line in the axis direction of the transfer roller.05-19-2011
20090028613SLEEVE EXCHANGE SYSTEM - The invention relates to a system for replacement of sleeves (01-29-2009
20100239330IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member, a belt member, a stretching roller, a driving roller configured to transmit a driving force to the belt member, a motor configured to supply a driving force to the driving roller, a first frame configured to rotatably support two ends of the stretching roller, a second frame disposed to be tiltable relative to the first frame and configured to rotatably support two ends of the driving roller, a steering driving unit configured to cause the second frame to perform a tilt operation, a tension roller disposed at a position adjacent the driving roller in the downstream side of the driving roller in the rotational direction of the belt member and configured to supply a tension to the belt member, and an elastic unit configured to elastically support the tension roller.09-23-2010
20100260519TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes an image carrier that carries an image and a transfer roller having a recessed section, a transfer medium gripping member that is disposed in the recessed section and grips a transfer medium, and an elastic member that forms a transfer nip by abutting upon the image carrier, the transfer roller transferring the image carried by the image carrier to the transfer medium by abutting upon the image carrier. The transfer medium gripping member grips the transfer medium when the recessed section moves to a position of the transfer nip and the image carrier and the transfer roller do not contact to each other.10-14-2010
20110158711Drive transmission system, driving device, and image forming apparatus incorporating drive transmission system - A drive transmission system includes a shaft member storing grease in a shaft outer circumferential small diameter section. A drive transmission gear is provided including a gear inner circumferential sliding section and a gear inner circumferential large diameter section. A gear moving device is provided to move the drive transmission gear reciprocally along the shaft member in a shaft direction. A restriction device is provided to restrict a movement range of the drive transmission gear along the shaft member in the shaft direction to enable the gear inner circumferential large diameter section to face the shaft outer circumferential small diameter section substantially continuously.06-30-2011
20110135347IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member bearing a normal toner image and a toner pattern; toner image forming means for forming the normal toner image in an image area of the image bearing member and for forming the toner pattern in a non-image-area of the image bearing member; an intermediary transfer member contactable to the image bearing member to form a primary transfer portion for primary transfer, in the primary transfer portion, of the normal toner image from the image bearing member, wherein the toner pattern on the intermediary transfer member is carried to the primary transfer portion; a primary transfer member for transferring the toner image onto the intermediary transfer member from the image bearing member; a secondary transfer member contacted to the image bearing member to form a secondary transfer portion for transferring the normal toner image passing through the secondary transfer portion; toner removing means for removing toner from the secondary transfer member; toner pattern adjusting means for changing an amount of the toner of the toner pattern in accordance with toner image formation hysteresis of the toner image forming means; and cleaning time changing means for changing, in accordance with an amount of toner of the toner pattern, a cleaning duration in which the toner removing means removes the toner from the transfer member in a period from the toner pattern passing through the transfer nip to the recording material reaching the transfer nip.06-09-2011
20100196061IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus and an image forming method are disclosed. The image forming apparatus includes a transfer belt that carries an image, a transfer roller that transfers the image carried on the transfer belt to a transfer material, a transfer material transporting unit that sucks a second surface, which is opposite to a first surface that is transferred the image, of the transfer material by air, and transports the transfer material along a transport surface, and a fixing unit that fixes the transfer material transported by the transfer material transporting unit.08-05-2010
20110217088Method and System for Printing Electrostatically or Electrographically Generated Images to Contoured Surfaces of Ceramic and Glass Items Such as Dishware - A glass or ceramic dishware item having a contoured surface with an image disposed thereon is provided. The image is transferred to the contoured surface from a layered ink composite. The layered ink composite is created by depositing a first layer of thermoplastic ink onto a silicone substrate. A ceramic toner configured as an image is electrographically deposited onto the first layer of thermoplastic ink. A second layer of thermoplastic ink is then deposited onto the ceramic toner. The image is transferred, at ambient temperature, from the layered ink composite to the contoured surface of the dishware item by moving the second layer of thermoplastic ink and the contoured surface into contact. The dishware item is then fired.09-08-2011
20090116879Drum Positioning System - Various embodiments and methods relating to adjusting and maintaining a relative positioning and/or pressure between a first drum and a second drum are disclosed.05-07-2009
20120039639IMAGE FORMING APPARATUS HAVING A MECHANISM FOR DETECTING A MARK ON A BELT - A circumferential length of a belt is measured within a short period of time. A plurality of marks is provided on a belt. Distances between the marks are set to be all different from each other. The distance between the marks is set to allow the mark to be identified by measuring a period of time between the detection of one mark and that of the next mark even if the length of the belt is changed to some degree by the expansion of the belt or the like. Then, a period of time between the identified mark and the next mark is accurately measured. The total circumferential length of the belt is measured based on the results of measurement.02-16-2012
20120008992PROCESS FOR PRODUCING CONDUCTIVE RUBBER ROLLER, AND ROLLER FOR ELECTROPHOTOGRAPHIC APPARATUS - This invention provides a process for producing a conductive rubber roller having small aspect ratios of inner and outer diameters, having a stable measure of its inner diameter, having uniform cell distribution and being free from non-uniformity of hardness and electrical resistance in the peripheral direction. The process has a step of continuously extruding a tube composed of a specific unvulcanized rubber composition from a rubber extruder in a microwave vulcanizing unit, and a step of foaming and vulcanizing the tube by using a microwave irradiator having a microwave irradiation zone 4 m or less in length while being transported at given speed. The foamed rubber tube has an inner diameter 20 to 35% smaller than the outer diameter of the conductive core material over the whole region in the lengthwise direction, and the conductive core material is press-fitted into the foamed rubber tube without using any adhesive.01-12-2012
20120008991TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCORPORATING TRANSFER DEVICE - An image transfer system comprises an image bearer and an opposed member having a contact surface contacting a recording medium and opposed to a surface of the image bearer to form a transfer nip. A pressing device applies pressure to the transfer nip. An engaging and disengaging member engages and disengages the contact surface from the surface of the image bearer. A transfer bias device applies a transfer bias transferring an image formed on the image bearer onto the recording medium conveyed and pinched at the transfer nip. The image is composed of an adjustment pattern formed on a portion of the image bearer corresponding to an interval between recording mediums successively conveyed through the transfer nip. The engaging and disengaging device disengages the contact surface from the surface of the image bearer to form a gap therebetween when the adjustment pattern passes therethrough.01-12-2012
20120301190ELECTROCONDUCTIVE ENDLESS BELT - Provided is an electroconductive endless belt by which a good image with uniformity and without local unevenness can be obtained at a lower cost.11-29-2012
20120177417IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - Provided is an image forming method in which a foil image exhibiting excellent finish without any wrinkle and strong adhesive strength is formed on a foil transferring face made of toner. The image forming method for transferring the transfer foil on the foil transferring face is conducted by contacting the transfer foil to the foil transferring face formed by using toner having a glass transition temperature of not more than 60° C., and by passing through a nip portion formed between a driving roller and a follower roller.07-12-2012
20090060598IMAGE FORMING METHOD - Disclosed is an image forming method including steps of primary transferring the toner image formed on the photoreceptor to an intermediate transfer material, secondary transferring the toner image on intermediate transfer material, and cleaning remaining toner on the photoreceptor, in which method the toner contains abrasive agent particles adhered to a toner mother particle comprising a resin and a colorant, abrasive agent particles having a particle diameter of 80-300 nm and Mohs' hardness of 5 or more in an amount of parts by weight of 100 parts by weight of toner mother particle, and the intermediate transfer material has a hardness measured by nanoindentation method of 3-10 GPa.03-05-2009
20120093545IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier configured to carry a toner image, a movable belt member configured to convey a recording material, a transfer member configured to electrostatically transfer the toner image formed on the image carrier to the recording material conveyed by the belt material, and a plurality of auxiliary separation members configured to separate the recording material from the belt member such that the belt member positioned more downstream than the transfer member in the direction in which the recording material is conveyed is boosted from the inside of the belt member to locally protrude the belt surface of the belt member in the width direction, wherein the auxiliary separation members can move correspondingly to the size of the conveyed recording material in the width direction to the position where the ends of the recording material pass in the width direction.04-19-2012
20120093544Imaging System And Method - An intermediate transfer member (04-19-2012
20100209148IMAGE FORMING METHOD EMPLOYING CLEAR TONER - A method of image forming comprising the steps of: providing a clear toner all over a transfer material on which an image is formed; heating and pressing the transfer material having thereon the image while the transfer material is in contact with a belt; cooling the transfer material; and peeling the transfer material from the belt, whereby a clear toner layer formed on the transfer material is obtained, wherein a storage modulus G′ at 60° C. of the clear toner is 1×1008-19-2010
20080232866Image forming apparatus - An image forming apparatus includes a belt-shaped image carrier that carries an image, an image transfer unit that transfers the image onto a recording medium, and a conveying unit that conveys the recording medium to the image transfer unit. The image carrier has a sloping surface that slopes down from upstream of the image transfer unit in a conveying direction. The conveying unit includes a linear conveying path that is arranged upstream of the image transfer unit in the conveying direction, below the sloping surface and above a horizontal line passing through the image transfer unit.09-25-2008
20110211871IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member; a belt unit which is rotatable in contact with the image bearing member and which is capable of being drawn out of a main assembly of the image forming apparatus; a cam for switching a position of the belt member relative to the image bearing member; a motor for rotating the cam; control means for controlling the motor to contact and space the belt member relative to the image bearing member; a lever movable between a first position in which the belt unit is fixed to the main assembly of the image forming apparatus and a second position in which the belt unit is capable of drawn out of the main assembly of the image forming apparatus; and a spacing mechanism for spacing the belt from the image bearing member by converting movement of the lever from the first position to the second position to a rotation of the cam, when the belt member is contacted to the image bearing member.09-01-2011
20120063818Electrophotographic Imaging Member and Method of Making Same - Disclosed herein is an electrophotographic imaging member comprising a substrate, and a charge generating layer containing a phthalocyanine pigment, a binder, and a solvent. The charge generating layer has a pigment particle separation distance of 28 nm or less after evaporation of the solvent. A coating system, a method of making an electrophotographic imaging member, and a method of printing also are disclosed.03-15-2012

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