Patent application number | Description | Published |
20080237979 | SHEET CONVEYING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING APPARATUS - The present invention provides a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus capable of stably correcting the delay or the advance of a sheet even if sheet conveying rollers such as a skew feeding correction roller and the like are decentered. The delay amount or the advance amount of the sheet being conveyed is detected by a deviation amount detection unit | 10-02-2008 |
20080277857 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper. | 11-13-2008 |
20090003866 | IMAGE HEATING APPARATUS - An image heating apparatus including an endless belt for heating an image on a recording material; a supporting member for supporting the belt; a coil for induction heat generation in the belt; control means for controlling a position of the belt in a widthwise direction by inclining the supporting member so as to maintain the position of the belt in the widthwise direction within a predetermined target range; and suppressing means for suppressing a variation of a distance between the belt and the coil with a variation of inclination of the supporting member. | 01-01-2009 |
20090067896 | IMAGE FORMING APPARATUS - An image forming apparatus has a endless conveying belt ( | 03-12-2009 |
20090074449 | IMAGE FORMING APPARATUS - An image forming apparatus has an abutment roller which is provided at either end of a developing sleeve in a longitudinal direction and makes an SD gap (Gsd) between a photosensitive drum and a developing sleeve constant, an abutment block which is provided at either end of the photosensitive drum in a longitudinal direction and on which the abutment roller abuts, and a pressing spring which directly presses the abutment roller toward the abutment block. The stability of the SD gap (Gsd) and reduction of the driving load torque of the developing sleeve can be achieved to cope with both high image quality and durability of the image forming apparatus. | 03-19-2009 |
20090140483 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly. | 06-04-2009 |
20100119259 | IMAGE FORMING APPARATUS - A positioning roller is configured to be pressed against an abutment block by a reactive force produced when the positioning roller abuts on an S-D-direction abutment block. | 05-13-2010 |
20100252980 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly. | 10-07-2010 |
20110127709 | SHEET CONVEYANCE APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING APPARATUS - In a sheet conveyance apparatus, a sponge roller is provided at a joining portion in which a first sheet conveyance path joins a second sheet conveyance path. A leading edge of a sheet or tailing edge of a sheet abuts at the sponge roller when the sheet is conveyed from the first conveyance path to the second conveyance path. In a projection surface in a direction orthogonal to a sheet conveyance direction in the second sheet conveyance path, an outer periphery of the sponge roller and an outer periphery of a conveyance roller, which is positioned in a downstream side, are partially overlapped in the second conveyance path. Further the sponge roller is rotatably arranged. With such a configuration, the noise generated in the joining portion can be reduced, and effect to reduce the noise can be continued. | 06-02-2011 |
20110133399 | SHEET CONVEYING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING APPARATUS - An elastic sponge roller is provided at a confluence portion where a first sheet conveyance path joins in a second sheet conveyance path and a leading edge and a rear edge of a sheet are brought into contact with the sponge roller when the sheet is conveyed from the first conveyance path to the second conveyance path. Further, the sponge roller is connected to drive via a one-way clutch. Such a configuration reduces a sound produced at the confluence portion and prevents the leading edge of the sheet from being bent in colliding with the sponge roller to stabilize the conveyance of the sheet. | 06-09-2011 |
20110140356 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A packing material for distribution is formed in such a shape that, when the packing material attached in a deck unit fails to be removed, a control unit determines that no sheet is present on a tray based on detection signals from a sheet surface detection sensor and a sheet presence detection sensor. When a user checks the deck unit when the absence of sheets is displayed, the user can notice a failure to remove the packing material, thus preventing damage to a sheet feeding apparatus caused by the failure to remove the packing material for distribution. | 06-16-2011 |
20120063803 | IMAGE FORMING APPARATUS - To remove also VOC gas generated from the discharged sheets, an image forming apparatus comprises an image forming unit which forms an image on a sheet; a tray on which sheets on which images are formed by the image forming unit are stacked; a suction device which sucks air from the surrounding space of sheets stacked up on the tray; and a VOC removing unit which removes VOC contained in the air sucked by the sucking device. | 03-15-2012 |
20120153557 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus includes a curve-shaped conveying path conveying a sheet from a first conveyance direction toward a second conveyance direction, a drive conveying portion conveying the sheet in the second conveyance direction by a pair of mutually-pressed rollers, and a belt conveying portion conveying the sheet toward the drive conveying portion by an endless belt member, wherein the belt conveying portion is configured to include a first belt support roller which is arranged coaxially with one of the pair of rollers and a second belt support roller which is arranged at an upstream side of the drive conveying portion from the first belt support roller, to wind the belt member around the first and second belt support members, and to set an outer diameter of the first belt support roller including the belt member to be smaller than an outer diameter of the one roller. | 06-21-2012 |
20130002789 | LIGHT SCANNING APPARATUS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A light scanning apparatus to be used in an electrophotographic image forming apparatus, the light scanning apparatus including: a housing having an outer wall provided with an opening; a light source configured to emit a light beam; a deflecting device provided in the housing and configured to deflect the light beam emitted from the light source such that the light beam emitted from the light source scans a photosensitive member; an optical element arranged on an optical path of the light beam in the housing; and an elastic member provided on the housing to block up the opening, wherein the elastic member is formed of a material which is deformable to increase and decrease a volumetric capacity of an internal space formed by the housing and the elastic member in accordance with a temperature fluctuation inside the housing. | 01-03-2013 |
20140042687 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus capable of improving operation performances. Sheet feeding cassettes and having sheet stacking portions SS | 02-13-2014 |