Patent ID: 8385775

Claim:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly of the apparatus includes a main assembly side positioning portion, and an urging member moveable to take an urging position for urging said process cartridge to the main assembly side positioning portion, a retracted position retracted from the urging position, and a stand-by position that is in a movement path of said process cartridge, said process cartridge comprising: an electrophotographic photosensitive drum; a developing unit including developing means for developing an electrostatic latent image formed on said electrophotographic photosensitive drum; a portion to be positioned; a displacing portion provided in said developing unit to move the urging member from the stand-by position to the retracted position by contacting the urging member when said process cartridge advances along an axial direction of said electrophotographic photosensitive drum in the main assembly, said displacing portion being effective to move the urging member to the retracted position by contacting the urging member when said process cartridge advances in the main assembly; and a portion to be urged that can be urged by the urging member in a state in which process cartridge is set in the main assembly, wherein, when said process cartridge advances in the main assembly, said portion to be urged is urged toward the main assembly side positioning portion so that said portion to be positioned is abutted to the main assembly side positioning portion by the urging member moving to the urging position after being retracted to the retracted position by said displacing portion, and wherein said portion to be positioned is positioned to the main assembly side positioning portion by said portion to be urged being urged by the urging member in a state in which process cartridge is set in the main assembly.