Patent application number | Description | Published |
20110158703 | DEVELOPING APPARATUS AND PROCESS CARTRIDGE - A developing apparatus includes a developer bearing member, a supporting portion, an urging unit, and a movement regulating member. The developer bearing member rotates while bearing developer. The supporting portion rotatably and movably supports the developer bearing member and includes a recessed portion that is formed into a concave shape. The urging unit urges the developer bearing member in a predetermined direction of the rotational axis direction. The movement regulating member is fitted to an end of the developer bearing member and is movable together with the developer bearing member. The movement regulating member may move to a first position where movement in a perpendicular direction is regulated by coming into contact with a portion of the supporting portion and a second position that is a position apart from the first position and movable in the perpendicular direction without coming into contact with the portion of the supporting portion. | 06-30-2011 |
20110229196 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process cartridge includes a drum; a rotatable roller including a first shaft end portion and a second shaft end portion; a bearing member for rotatably supporting ends of a shaft of the rotatable roller; an urging member for urging the rotatable roller via the bearing member in a drum contact direction; a cartridge frame for rotatably supporting the drum and for movably holding the rotatable roller via the bearing member; a movable guide member movable in an axial direction of the shaft of the rotatable roller and including a first contact portion; and a fixed guide member including a second contact portion. At least one of the first contact portion and the first shaft end portion has an inclined surface inclined with respect to the axial direction of the rotatable roller, and at least one of the second contact portion and the second shaft end portion has an inclined surface inclined with respect to the axial direction of the rotatable roller. | 09-22-2011 |
20120275815 | PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A support member disposed in a photosensitive member unit for supporting a photosensitive drum to be movable between an acting position, at which the photosensitive drum is brought into contact with a process unit, and a non-acting position, at which the photosensitive drum is separated from the process unit or is brought into contact with the process unit with a pressure lower than a pressure with which the photosensitive drum contacts the process unit at the acting position is included, and when the developing unit is located at a development position, the photosensitive drum secures the acting position, and when the developing unit is located at a non-development position, the photosensitive drum secures the non-acting position. | 11-01-2012 |
20130051840 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - An electrophotographic image forming apparatus for forming an image on a recording material includes an electrophotographic photosensitive member (drum); a developer carrying member; a cleaning blade for cleaning the drum; a developer seal member of a peripheral surface seal type, provided at an end portion of the developer carrying member, for preventing leakage of the developer; and a developer retaining member provided at an end portion of the cleaning blade. With respect to a longitudinal direction of the drum, the developer seal member is disposed in a region where the cleaning blade is provided, an inside end position of the retaining member is located at the same position as or inside an inside end position of the developer seal member, and an outside end position of the retaining member is located at the same position as or outside an outside end position of the developer seal member. | 02-28-2013 |
20130315621 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process cartridge detachable to an image forming apparatus main body includes an image bearing member, a developer bearing member, a developing frame member configured to support the developer bearing member and to be capable of assuming an abutting state and a separating state, and a force receiving portion configured to allow the developing frame member to enter the separating state by being pressed by a pressing portion, in which the force receiving portion includes a first portion to abut on the pressing portion and to extend along the inserting direction of the process cartridge, and a second portion provided on each of an upstream and downstream side of the first portion in the inserting direction, extending from the first portion in a direction crossing the inserting direction, and to abut on the pressing portion, and the force receiving portion has a space formed between the two second portions. | 11-28-2013 |
20140003838 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS | 01-02-2014 |
20140086627 | IMAGE FORMING APPARATUS, CARTRIDGE AND IMAGE FORMING APPARATUS SYSTEM - A cartridge for an image forming apparatus including a movable member is provided with a first engaging portion and a second engaging portion movable between a first position and a second position, the cartridge includes a first engaged portion engageable with the first engaging portion; and a second engaged portion engageable with the second engaging portion, wherein by the first engaged portion being engaged with the first engaging portion in the process of mounting, the movable member is moved from the first position to the second position to permit the second engaged to pass the second engaging portion in a mounting direction. | 03-27-2014 |
20140086628 | IMAGE FORMING APPARATUS, CARTRIDGE AND IMAGE FORMING APPARATUS SYSTEM - A process cartridge detachably mountable to an image forming apparatus includes a contact portion contactable to a first movable member of the apparatus in the process of mounting the cartridge to the image forming apparatus, wherein the contact portion passes the first movable member in the inserting direction, and the first movable member moves from the retracted position to the projection position, and then the second movable member moves from the blocking position to the open position, and the contact portion passes the second movable member in the inserting direction, by which the process cartridge can be mounted to a proper image forming apparatus. | 03-27-2014 |