| 摘要 |
A process cartridge detachably mountable to a mains assembly of an electrophotographic image forming apparatus, includes a photosensitive drum (1); a developing roller (5); a drum unit (8) for supporting the drum, wherein the drum unit is positioned relative to the main assembly when the process cartridge is set in the main assembly; a developing unit (4) supporting the developing roller (5) and movable with respect to the drum unit (8) between a contact position in which the developing roller and the drum are in contact to each other and a spaced position ; a drum driving force receiving portion, provided in the drum unit, for receiving, from the main assembly, a drum driving force for rotating the drum ; a movable member (19) which is movable to move the developing unit between the contact position and the spaced position ; and a movable member driving force receiving portion provided in the drum unit for receiving, from the main assembly, a movable member driving force for moving the movable member. |
