Patent application number | Description | Published |
20080240801 | Transfer Apparatus, Image Forming Apparatus Having the Same and Image Forming Method - A transfer apparatus can uniformize the charged amount of toner on the intermediate transfer member and ensure a uniform transfer performance over the entire printing surface by means of a simple arrangement. The transfer apparatus has a primary transfer means arranged corresponding to a plurality of image carriers in order to primarily transfer the toner images on the image carriers, an intermediate transfer member adapted to operate for color superposition by the primary transfer means, a secondary transfer means adapted to operate for secondary transfer of the toner image on the intermediate transfer member onto a transfer medium and a pre-secondary transfer charging means for electrically charging the pre-secondary transfer toner on the secondary transfer means with the opposite polarity, the secondary transfer means being adapted to apply a secondary transfer bias to the toner on the intermediate transfer member with the polarity opposite to that of the primary transfer bias applied at the time of primary transfer. | 10-02-2008 |
20090016761 | Image Forming Device and Control Method Thereof - An image forming device includes a developer carrier for carrying a liquid developer, a latent image carrier to which a latent image is developed by the developer carrier, a charging member for charging the latent image carrier, an exposure device for exposing the latent image carrier, a latent image carrier cleaning roller for applying a bias to clean the latent image carrier, a latent image carrier cleaning blade having contact with the latent image carrier and for scraping out the developer on the latent image carrier, and a cleaning process control section for cleaning the latent image carrier in a condition in which a charging bias of the charging member is applied, the developer carrier has contact with the latent image carrier, and the bias of the latent image carrier cleaning roller is applied to the latent image carrier cleaning roller. | 01-15-2009 |
20090016766 | Control Method of Image Forming Apparatus and Image Forming Apparatus - A control method of an image forming apparatus is disclosed. The apparatus includes a latent image carrier; a development apparatus for developing a liquid developer containing a toner, a carrier liquid and a dispersant soluble in the carrier liquid therein on the latent image carrier; an intermediate transfer medium to which a developer image developed on the latent image carrier is transferred; a transfer apparatus for transferring the developer image on the intermediate transfer medium to a transfer material; and a dispersant collecting liquid application unit for applying a dispersant collecting liquid on the intermediate transfer medium. The method includes performing the control such that after finishing of transfer of the developer image onto intermediate transfer medium, application of the dispersant collecting liquid on the intermediate transfer medium is started by the dispersant collecting liquid application unit. | 01-15-2009 |
20090185843 | Image Forming Device and Cleaning Device - An image forming device includes a development section provided with a developer carrier adapted to perform development using a liquid developer including a carrier liquid and toner particles, an image carrier adapted to carry an image developed by the development section, an cleaning roller of the image carrier having contact with the image carrier, an cleaning blade of the cleaning roller of the image carrier having contact with the cleaning roller of the image carrier at one of a position on an imaginary line of an intersection between an imaginary plane passing through a center of a rotational axis of the cleaning roller of the image carrier and perpendicular to an imaginary vertical plane and a surface of the cleaning roller of the image carrier and a position lower than the imaginary line in a vertical direction, and an image carrier recovery reservoir adapted to store the liquid developer recovered by the cleaning blade of the cleaning roller of the image carrier. | 07-23-2009 |
20100046990 | Image Forming Apparatus - An image forming apparatus includes: a photoconductor drum; a transfer belt wound around the photoconductor drum and configured to move in a first direction; and a transfer member configured to come into abutment with the photoconductor drum at an abutment position via the transfer belt, wherein the transfer belt comes into contact with the photoconductor drum at a first position and comes out of contact with the photoconductor drum at a second position, and a peripheral surface length of the photoconductor drum between the abutment position and the second position is larger than a peripheral surface length of the photoconductor drum between the first position and the abutment position. | 02-25-2010 |
20100092222 | Image Formation Apparatus and Image Formation Method - An image formation apparatus includes: a developer retaining member that retains a liquid developer that contains toner particles and carrier liquid; a roller member that can be brought into contact with the developer retaining member at a position and distanced from the developer retaining member at another position; a cleaning blade that has a contact edge that is in contact with the roller member for cleaning the roller member; and a supporting member that supports the cleaning blade, wherein the cleaning blade has a first plane that is supported by the supporting member or is opposite to a surface that is supported by the supporting member and further has a second plane, the first plane and the second plane forming the contact edge, and an angle θ | 04-15-2010 |
20100098470 | Cleaning Device and Image Forming Apparatus - A cleaning device includes: a cleaning blade which removes liquid developer including toner particles and carrier liquid by bringing a contact corner portion constituted by a first surface and a second surface into contact with a cleaned body which is rotated or circulated while holding the liquid developer; a blade supporting body which supports the cleaning blade at the first surface of the cleaning blade or a surface on the side opposite to the first surface; a pressing member which presses the contact corner portion of the cleaning blade against the cleaned body; and seal members disposed at side ends in the first direction of the cleaning blade and having projecting portions which project further than the second surface on the side opposite to a third surface which is on the side opposite to the second surface. | 04-22-2010 |
20100196061 | IMAGE 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 |
20100226699 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes: an electrically-conductive elastic member which carries a transfer material; a transfer material separating member which peels off the transfer material from the elastic member; a supporting member which has an elastic member supporting portion that supports the elastic member, and a separating member supporting portion that supports the transfer material separating member, and also, has electrically-conductive properties; and a transfer bias applying section which is electrically connected to the supporting member, thereby applying a transfer bias. | 09-09-2010 |
20100232845 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus including an image carrier that carries an image, a transfer roller that abuts on the image carrier and has a grooved portion in an axial direction, an abutting member that is arranged in an axial end side of the transfer roller and includes a first circumference portion having a first distance from a rotation center of the transfer roller and a second circumference portion having a second distance which is shorter than the first distance, and a support member that abuts the abutting member. | 09-16-2010 |
20100247172 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus including a transfer belt on which an image is transferred, a belt suspension roller that suspends the transfer belt, a transfer roller that is arranged to face the belt suspension roller with the transfer belt in between and includes a shaft portion and a concave portion formed in a shaft direction, and a support member that is arranged on the shaft portion of the transfer roller and includes a first circumferential portion arranged in the concave portion as seen from a shaft direction of the transfer roller, a second circumferential portion arranged at one side of the concave portion in a rotation direction, and a third circumferential portion arranged at the other side of the concave portion in the rotation direction. | 09-30-2010 |
20100247176 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes: a transfer belt to which an image is transferred; a belt tension roller around which the transfer belt is looped; a transfer roller that includes a shaft and a recessed portion which is formed in an axial direction of the transfer roller and has a first edge formed in an opening edge in one side of a rotation direction of the transfer roller and a second edge formed in an opening edge in the other side opposite to the one side; and a support member that is arranged in the shaft of the transfer roller. | 09-30-2010 |
20100260519 | TRANSFER 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 |
20100266317 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes: an image carrier that carries an image; a transfer roller having a transfer material grip member that moves in a circumferential direction and holds a transfer material, the transfer roller forming a transfer nip portion with the image carrier by coming into contact with each other; and a transfer material feed portion that delivers the transfer material to the transfer nip portion. The transfer material feed velocity of the transfer material feed portion is greater than the movement velocity of the transfer material grip member when the transfer material grip member moves from the rotational center of the transfer roller in the circumferential direction of the transfer roller. | 10-21-2010 |
20100266318 | IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - An image forming method includes: feeding a transfer material to a transfer portion by gate rollers; contacting the transfer material with a transfer material grip member that is disposed on a transfer roller; holding the transfer material on an elastic holding portion which holds the transfer material disposed on the circumference surface of the transfer roller; transferring the transfer material held by the holding portion; and transferring an image at the transfer portion. | 10-21-2010 |
20100278550 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus including a latent image bearing drum on which a latent image is formed, an exposure unit that exposes the latent image bearing drum, a developer unit that develops the latent image formed on the latent image bearing drum, a transfer medium onto which the image developed by the developer unit is transferred, and a transfer roller that transfers the image from the transfer medium to the transfer material, the transfer roller having a concaved portion extending in the axial direction and a support portion disposed on the outer circumference of the roller that supports the transfer material, where the outer circumference of the transfer roller being an integral multiple or an approximate integral multiple of the circumference of the latent image bearing drum. | 11-04-2010 |
20100303516 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH THE TRANSFER DEVICE - A transfer device including a transfer roller including a roller base member which opposes an image carrier carrying an image, the transfer device rotates about an axis of rotation, and has a concaved portion on an outer circumference thereof and is configured to transfer the image carried by the image carrier to a recording medium when the concaved portion is not opposed to the image carrier, the device also including a pressing portion configured to press the transfer roller to the image carrier, and a contact portion provided at either end of the transfer roller, wherein the contact portion includes an outer circumference which comes into contact with a supporting portion disposed on a drive transmitting portion configured to transmit a drive to the image carrier while the concaved portion opposes the image carrier, and an elastic member is provided on the outer circumference of the contact portion. | 12-02-2010 |
20140292974 | RECORDING APPARATUS - A recording apparatus includes a discharge section that discharges a recording medium, a first bending member that is in contact with the recording medium and is transported toward the discharge section to bend the recording medium, a second bending member that is in contact with the recording medium on a further downstream side in a direction of the transport than a contact position of the discharge section, a mounting section where the recording medium that is discharged from the discharge section is mounted, and a first biasing member that is in contact with a surface on a rear end side in the transport direction of the recording medium mounted on the mounting section and on a side opposite to the recording surface to perform biasing toward a recording surface side on a further downstream side than the contact position of the discharge section. | 10-02-2014 |
20140292978 | RECORDING APPARATUS - A recording apparatus includes a recording unit that performs recording on a recording surface of a recording medium, a discharge section that discharges the recording medium which is transported from the recording unit along a transport path, a first bending member that is in contact with the recording medium which passes through the recording unit in the transport path and is transported toward the discharge section to bend the recording medium, and a second bending member that is in contact with the recording medium on a further downstream side in a direction of the transport than a contact position of the discharge section where a feeding force is applied to the recording medium and maintains a bending shape of the recording medium which is bent by the first bending member as it is, in which the second bending member has mobility. | 10-02-2014 |
20140292979 | RECORDING APPARATUS - A recording apparatus includes a recording unit that performs recording on a recording surface of a recording medium, a discharge section that discharges the recording medium, and a first bending member that is in contact with the recording medium which passes through the recording unit in the transport path and is transported toward the discharge section to bend the recording medium, in which the first bending member bends the recording medium in such a manner that the recording surface is directed inside by displacing both side portions of the recording medium in a width direction with respect to a central portion of the recording medium in the width direction of the recording medium at a position on a further upstream side in a direction of the transport than a contact position of the discharge section where a feeding force is applied to the recording medium. | 10-02-2014 |