摘要:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an opening, a door movable between a close position for closing the opening and an open position for opening the opening, a first force application member movable with movement of the door from the open position to the closing position and a second force application member movable by a driving force from a driving source, the process cartridge includes an electrophotographic photosensitive drum; a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum; a drum unit containing the electrophotographic photosensitive drum; a developing unit which contains the developing roller and which is movable relative to the drum unit such that developing roller is movable between a contact position in which the developing roller is contacted to the electrophotographic photosensitive drum and a spaced position in which the developing roller is spaced from the electrophotographic photosensitive drum; and a force receiving device including a first force receiving portion for receiving a force from the first force application member by movement of the door from the open position to the close position in the state that process cartridge is mounted to the main assembly of the apparatus through the opening, and a second force receiving portion movable from a stand-by position by movement of the first force receiving portion by a force received from the first force application member, wherein the second force receiving portion takes a projected position for receiving a force from the second force application member to move the developing unit from the contact position to the spaced position, the projected position being higher than the stand-by position.
摘要:
An electrophotographic photosensitive drum usable with an electrophotographic image forming apparatus, includes a non-circular twisted projection (72a) having a cross-section with a plurality of corner portions, the non-circular twisted projection being provided at one longitudinal end of the electrophotographic photosensitive drum and being engageable with a non-circular twisted hole (73a) having a section with a plurality of corner portions, the non-circular twisted hole being disposed at a central portion of a driving rotatable member (73) of a main assembly of the image forming apparatus; and a second electroconductive member (71) contactable with a first electroconductive member (70) electrically connected with a main assembly of the image forming apparatus, the first electroconductive member being disposed in the hole to provide a grounding of the electrophotographic photosensitive drum, the second electroconductive member being provided on the projection and being electrically connected with the electrophotographic photosensitive drum. A contact position (b2) between the second electroconductive member and the first electroconductive member moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the twisted projection is engaged with the hole and rotates integrally with the projection when in use for driving the drum.
摘要:
A drive transmission apparatus (I) includes a first coupling portion having a polygonal shape; a second coupling portion (14) having a hole portion (50) which has a cross-sectional configuration larger than the first coupling portion, the hole portion being engageable with the first coupling portion; and a center shaft provided on the first coupling or the second coupling, the center shaft penetrating the other one of the first and second coupling.
摘要:
The present invention provides a process cartridge removably mounted to an electrophotographic image forming apparatus. It comprises an electrophotographic photosensitive member, a developing sleeve for supplying magnetic toner to the electrophotographic photosensitive member to develop a latent image formed on the electrophotographic photosensitive member, a magnet disposed within the developing sleeve, and an electrode member for supplying electricity from the image forming apparatus to the developing sleeve when the process cartridge is mounted to the image forming apparatus. Wherein the magnet is positioned in a thrust direction by the electrode member.
摘要:
An electrical connector electrically connectable with a main assembly connector, provided in a main assembly of an electrophotographic image forming apparatus includes storing member for storing information; a plurality of electrical contacts for separably connecting with a contact of the main assembly connector, when they are connected electrically with the main assembly connector; wherein the storing member is electrically connected with each of the electrical contacts with lead lines.
摘要:
An end cover for a process cartridge detachably mountable to an electrophotographic image forming apparatus for forming an image on a recording material, includes a base; a gear train including a plurality of gears mounted on the base; a first opening, provided in the base so as to be opposed to a gear of the gear train, for permitting the gear of the gear train to be rotated externally when the end cover is mounted to a cartridge frame in assembling of the process cartridge; a second opening, provided opposed to the cartridge gear, for permitting observation of rotation of the cartridge gear provided in the cartridge frame which cartridge gear receives driving force through the gear train when the gear opposed to the first opening is rotated.
摘要:
An electrical connector electrically connectable with a main assembly connector, provided in a main assembly of an electrophotographic image forming apparatus includes storing member for storing information; a plurality of electrical contacts for separably connecting with a contact of the main assembly connector, when they are connected electrically with the main assembly connector; wherein the storing member is electrically connected with each of the electrical contacts with lead lines.