Patent ID: 7058337

Claim:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the image forming apparatus including a first cam member movable between a first position and a second position away from the first position, said process cartridge comprising: an electrophotographic photosensitive drum; a developing roller, contacting said electrophotographic photosensitive drum, configured and positioned to develop an electrostatic latent image formed on said electrophotographic photosensitive drum; a first frame configured and positioned to support said electrophotographic photosensitive drum; a second frame configured and positioned to support said developing roller, said second frame being connected with said first frame for relative rotation about a shaft which is disposed downstream of said developing roller with respect to a mounting direction in which said process cartridge is mounted to a main assembly of the apparatus; a first entering portion, provided at one end portion of said second frame with respect to a longitudinal direction of said electrophotographic photosensitive drum and disposed downstream of the shaft with respect to the mounting direction, configured and positioned to permit at least a part of the first cam member with respect to the longitudinal direction to enter said process cartridge when said process cartridge is mounted to the main assembly of the apparatus; and a first cam engaging portion configured and positioned to engage the first cam member to receive from the first cam member a force for spacing said electrophotographic photosensitive drum and said developing roller from each other, said first cam engaging portion being disposed at said one end portion of said second frame and downstream of said first entering portion with respect to the mounting direction.