Patent ID: 8285173

Claim:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus that includes a drum coupling member, a development coupling member, and an abutting member, said process cartridge comprising: (i) a photosensitive drum; (ii) a drum coupling portion provided adjacent to one axial end of said photosensitive drum, said drum coupling portion being configured and positioned to engage with the drum coupling member to receive a driving force for rotating said photosensitive drum; (iii) a developing roller configured and positioned (a) to develop an electrostatic latent image formed on said photosensitive drum, and (b) to be rotatable about an axis thereof; (iv) a development coupling portion provided adjacent to one axial end of said developing roller, said development coupling portion including: an engaging portion configured and positioned (a) to engage with the development coupling member and to receive a driving force for rotating said developing roller, and (b) to be movable in a direction crossing the axis of said developing roller relative to said developing roller; (v) an urging portion configured and positioned to urge said engaging portion in a direction crossing the axis of said developing roller to enable engagement of said engaging portion with the development coupling member with insertion of said process cartridge into the main assembly of the apparatus along an axial direction of said developing roller; and (vi) an abutting portion configured and positioned to abut the abutting member so that a movement, relative to the abutting member, of said engaging portion which has not established an engagement with the development coupling member in the direction crossing the axis of said developing roller is prevented, when said process cartridge which has been inserted into the main assembly of the apparatus is moved in a direction crossing the axis of said developing roller, so as to enable engagement of said drum coupling portion with the drum coupling member.