Patent application number | Description | Published |
20090116887 | APPARATUS AND METHOD FOR CLEANING RESIDUAL TONER FROM DRUMS IN AN IMAGE FORMING APPARATUS - An apparatus and method for cleaning a plurality of drums in an image forming apparatus includes applying a first bias to each of a plurality of disturbing members, each disturbing member associated with a corresponding drum of a plurality of drums. While performing an image forming operation wherein at least one of the plurality of drums is not use, the bias is changed of a disturbing member corresponding to at least one of the plurality of drums not used in performing the image forming operation from the first bias to a second bias different from the first bias. | 05-07-2009 |
20100008690 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, INTERMEDIATE TRANSFER BELT, AND METHOD OF EVALUATING THE SAME - It is an object of the invention to provide an image forming apparatus in which the quality of output images is improved by defining the relation between a measured value of an adhesion of toner and a physical property value of an intermediate belt and related technologies thereof. | 01-14-2010 |
20100296839 | IMAGE FORMING APPARATUS AND ITS CLEANER UNIT, AND CLEANER UNIT REPLACEMENT METHOD OF THE IMAGE FORMING APPARATUS - There is provided an image forming apparatus in which occurrence of defective cleaning is prevented, replacement is easy, and occurrence of toner spillage can also be prevented. A cleaner unit of an image forming apparatus of the invention includes a cleaning member that is brought into contact with a toner bearing body in order to collect toner from the toner bearing body bearing the toner, a toner removal member to remove the toner from the cleaning member, and a waste toner storage part to store the removed toner, the cleaning member, the toner removal member and the waste toner storage part are integrally constructed into a unit structure, and the unit is constructed to be attachable to and detachable from the toner bearing body or a main body of the image forming apparatus. | 11-25-2010 |
20110008078 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - According to one embodiment, an image forming apparatus includes a first image forming unit, a second image forming unit, and an intermediate transfer medium. The first image forming unit includes at least one image bearing member on which a first image is formed. The second image forming unit includes an image bearing member on which a second image is formed. The first image is primarily transferred onto the intermediate transfer medium. When the intermediate transfer medium is moved to a first position, the first image is secondarily transferred onto the image bearing member of the second image forming unit and tertiarily transferred onto a transfer medium from the image bearing member. When the intermediate transfer medium is moved to a second position, the second image is transferred onto the transfer medium from the image bearing member of the second image forming unit. | 01-13-2011 |
20110064435 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - According to one embodiment, an image forming apparatus includes a supply device that supplies developer includes toner and carrier, a developing device configured to accommodate the developer includes toner and carrier in a manner that the developer is stirred and transported therein, and configured to discharge the developer in an overflow manner through a discharge opening, a screw that stirs and transports the developer in the developing device, and a control unit configured to change the rotation speed of the screw based on a predetermined index which varies in accordance with supply and consumption of the developer or an environmental condition when development is performed. | 03-17-2011 |
20110200345 | IMAGE FORMING APPARATUS, TONER IMAGE TRANSFER AND FIXING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM HAVING RECORDED THEREON TONER IMAGE TRANSFER AND FIXING PROGRAM - According to one embodiment, an image forming apparatus includes a photoconductive member, an intermediate transfer belt, a transfer and fixing belt, a fixing and pressing roller, and a heating device. The heating device heats a toner image on the transfer and fixing belt between a first toner image transfer position for transfer from the intermediate transfer belt onto the transfer and fixing belt and a second toner image transfer position for transfer from the transfer and fixing belt onto a sheet in a moving direction of a belt surface of the transfer and fixing belt and, at the same time, heats the sheet conveyed to the second toner image transfer position. | 08-18-2011 |
20110293330 | IMAGE FORMING APPARATUS AND GAP MAINTAINING METHOD OF CHARGING ROLLER - An image forming apparatus includes: a photoconductor that rotates about a first rotation axis; and a charging roller that rotates about a second rotation axis which is parallel to the first rotation axis, wherein the charging roller includes a conductive roller portion that extends in parallel with the first rotation axis and contains an ion-conductive agent, a flange portion that is provided on an outer peripheral surface of the conductive roller portion further to the outside than an image forming area of the photoconductor in the second rotation axis direction so as to protrude outward from the outer peripheral surface in the radial direction of the conductive roller portion into a flange shape, and an insulating elastic layer that coats the outer peripheral surface of the flange portion and has an elasticity higher than that of a photoconductive surface of the photoconductor. | 12-01-2011 |
20120063794 | IMAGE FORMING APPARATUS, GAP CONTROL METHOD - An image forming apparatus according to the embodiments includes a photoconductor, a charging unit which charges the photoconductor and is disposed to face the photoconductor in a non-contact manner, a positioning portion which changes a gap interposed between the photoconductor and the charging unit, on the basis of at least the temperature. | 03-15-2012 |
20120063804 | CHARGING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A charging device includes a charging member that is arranged close to a rotating charge target member, and charges a charge target surface of the charge target member while rotating, a cleaning member that makes friction contact with the charging member to cause the charging member to be driven and rotated, and cleans a surface of the charging member, and a cleaning member driving part to rotate and drive the cleaning member. | 03-15-2012 |