Patent application number | Description | Published |
20090136247 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus in which the image forming apparatus has a marginless mode in which the toner image is formed on said image bearing member in an area that covers the recording material and an area outside the recording material, and the toner image is transferred to extend beyond an edge of the recording material carried by said recording material carrying member, the image forming apparatus further including: a detecting device which detects the toner image that extends beyond the edge of the recording material and is transferred to said recording material carrying member in the marginless mode; and a control device which uses a detection result provided by said detecting device to control where said exposure device forms a latent image on said image bearing member. | 05-28-2009 |
20100080614 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An electrophotographic image forming apparatus in the state that cartridge is detachably mounted to a main assembly of the apparatus, the apparatus includes a cartridge supporting member movable between an inside position in the main assembly and an outside position outside the main assembly when a cartridge is mountable thereto and dismountable from the cartridge supporting member; a first opening through which the cartridge supporting member passes between the inside position and the outside position; a first openable member for openably closing the first opening; a second opening continuing from the first opening and provided above the first opening, the second opening being effective to permit the cartridge to be removed from the cartridge supporting member in the state that cartridge supporting member takes the outside position and being effective to permit the supporting member to support the cartridge; a second openable member for openably closing the second opening, the second openable member being effective to prevent external light from entering the main assembly when the second openable member closes the second opening; and an interrelating means for moving the second openable member to the opening position in interrelation with movement of the supporting member from the inside position to the outside position. | 04-01-2010 |
20100119254 | COLOR ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A color electrophotographic image forming apparatus including: a cartridge supporting member supporting a plurality of cartridges and moving between an inside position in the main body and a mounting and detaching position for mounting and detaching the cartridges; an engaging portion provided to one of the supporting member and the main body at a position corresponding to the mounting and detaching position for at least one cartridge; and a pressure member provided to the other and elastically urged to disengageably engage with the engaging portion, wherein when the supporting member is moved from the inside position to the mounting and detaching position, a load required for movement of the supporting member at the mounting and detaching position is made larger than a load required for the movement at other positions than the mounting and detaching position, by engagement of the pressure member with the engaging portion. | 05-13-2010 |
20100232849 | IMAGE FIXING APPARATUS - The image fixing apparatus forms a cleaning nip portion by pressing a web roll-up portion on a fixing rotation member with a feeding roller, a used portion for cleaning of the web is fed from a cleaning nip portion formation area, and during non-cleaning, a roller is at a waiting position at which the roller is further from the fixing rotation member than a position during cleaning so as to separate the web roll-up portion from the fixing rotation member. Accordingly, it is possible to reduce degradation of a cleaning ability due to a toner component held by the used portion of the cleaning web. | 09-16-2010 |
20100247143 | COLOR ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A color electrophotographic image forming apparatus including: a cartridge supporting member supporting a plurality of cartridges and moving between an inside position in the main body and a mounting and detaching position for mounting and detaching the cartridges; an engaging portion provided to one of the supporting member and the main body at a position corresponding to the mounting and detaching position for at least one cartridge; and a pressure member provided to the other and elastically urged to disengageably engage with the engaging portion, wherein when the supporting member is moved from the inside position to the mounting and detaching position, a load required for movement of the supporting member at the mounting and detaching position is made larger than a load required for the movement at other positions than the mounting and detaching position, by engagement of the pressure member with the engaging portion. | 09-30-2010 |
20110198801 | IMAGE FORMING APPARATUS - The present invention provides an image forming apparatus which can secure a stacking ability even when a paper is curled. | 08-18-2011 |
20120235349 | IMAGE FORMING APPARATUS WITH SHEET DISCHARGE TRAY - The present invention provides an image forming apparatus which can secure a stacking ability even when a paper is curled. | 09-20-2012 |
Patent application number | Description | Published |
20130308971 | DEVELOPER ACCOMMODATING UNIT, DEVELOPING DEVICE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A developer accommodating unit includes: a developer accommodating member, provided with an opening for permitting discharge of a developer, for accommodating the developer; a sealing member including a connecting portion for being connected to the developer accommodating member so as to seal the opening; and an unsealing member for exposing the opening by moving the sealing member to peel the connecting portion from the developer accommodating member. The connecting portion includes a first connecting portion and a second connecting portion with respect to a longitudinal direction thereof. When the connecting portion is peeled from the developer accommodating member, the unsealing member is flexed so that the first connecting portion is peeled earlier than the second connecting portion. | 11-21-2013 |
20140072326 | UNIT, CLEANING UNIT, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A cleaning unit usable with an image forming apparatus includes a cleaning blade, supported by a frame and including a free end contactable to an image bearing drum, for removing a developer from the drum; a first seal provided between the frame and the blade by injection molding into the frame adjacent to a longitudinal end portion of the blade, the first seal being effective to prevent developer leakage; and a second seal provided between the drum and the frame in contact with the free end of the blade adjacent to the longitudinal end portion, wherein the first seal includes a seal portion contacting the blade, and a seat supporting the second seal, the seat being deformable to move the second seal to urge the second seal to the free end of the blade when the drum is mounted to the frame. | 03-13-2014 |
20140072335 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process cartridge, wherein both in the case where the developing unit is at the contact position and in the case where the developing unit is at the separation position, a first regulating portion that the image bearing member unit has and a first regulated portion that the developing unit has, are engaged with each other, whereby the position in the axial direction of the image bearing member is regulated, wherein in the case where the developing unit is at the separation position, a second regulating portion and a second regulated portion, overlap each other in a direction perpendicular to the axial direction, and wherein in the case where the developing unit is at the contact position, the second regulating portion and the second regulated portion do not overlap each other in the direction perpendicular to the axial direction. | 03-13-2014 |
20140086620 | DEVELOPER ACCOMMODATING CONTAINER, DEVELOPING CATRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A developer accommodating container for accommodating a developer includes: a toner seal member for unsealably sealing an opening of the developer accommodating container; an unsealing member, connected to an end portion of the toner seal member, for unsealing the opening by moving at least a part of the toner seal member; and an auxiliary unsealing member for assisting unsealing by changing a pulling direction of the toner seal member by the unsealing member. The auxiliary unsealing member includes a shaft portion or a projected portion. The shaft portion or the projected portion extends in a longitudinal direction of the developer accommodating container. | 03-27-2014 |
20140161483 | IMAGE FORMING APPARATUS AND CARTRIDGE - An image forming apparatus loadable with a cartridge includes a supporting member movable, carrying the cartridge, between an inside position and an outside position, the supporting member being provided with a first regulating portion to limit the cartridge in one of the longitudinal directions and a second regulating portion to limit movement of the cartridge in the other one of the longitudinal directions; a third regulating portion to limit the supporting member in the one longitudinal direction; and a fourth regulating portion to limit the supporting member in the other longitudinal direction; wherein the first, second, third and fourth regulating portions are all provided at the one longitudinal end portion side and outside an image forming region. | 06-12-2014 |
20150033888 | DRIVE TRANSMISSION APPARATUS AND IMAGE FORMING APPARATUS - A drive transmission apparatus in which, when immobilization of a preceding gear ( | 02-05-2015 |
20150042033 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A variable speed unit is driven by a drive unit to make a tooth-missing large gear of a sheet feed tooth-missing stage gear mesh with a small gear of an input stage gear rotating at a constant speed, to then rotate a rotating shaft of the feeding roller and a cam at a first speed to lift an intermediate plate. If a sheet stacked on the intermediate plate is pressed against the feeding roller, the variable speed unit makes a large gear of the input stage gear and a tooth-missing small gear of the sheet feed tooth-missing stage gear mesh with each other, so that the rotating shaft of the feeding roller is rotated at a second speed faster than the first speed to rotate the feeding roller at a fast speed. | 02-12-2015 |