Patent ID: 6895199

Claim:
A process cartridge attachable to and detachable from an electrophotographic image forming apparatus main body including an opening in which said process cartridge is inserted and an opening/closing member movable between a closing position to close the opening and an opening position to open the opening, comprising: an electrophotographic photosensitive member; process means for operating on said electrophotographic photosensitive member; a frame member; a shutter configured and positioned to protect said electrophotographic photosensitive member, said shutter being movable between a protective position where said electrophotographic photosensitive member is protected and an open position where said shutter is spaced from said protective position and at least a portion of said electrophotographic photosensitive member is unprotected; a first protruding member protruding downward to said frame member in a mounting direction in which said process cartridge is mounted on the apparatus main body; and a second protruding member protruding downward to said frame member in the mounting direction; said second protruding member engaging with a regulating guide provided on the opening/closing member to regulate the movement of said process cartridge in an intersecting direction intersecting the mounting direction when said process cartridge is attached in the apparatus main body by passing through the opening.