Patent ID: 7190921

Claim:
A photosensitive member cartridge detachably attachable to a main body frame of an image forming apparatus, the photosensitive member cartridge comprising: a photosensitive member; a frame that supports the photosensitive member; an accommodating portion that is provided in the frame and accommodates a developing cartridge; and a lever that is provided on each side of the photosensitive member in the frame and movable between a contact position and a separation position, the lever that maintains a developing agent carrier in contact with the photosensitive member when in the contact position, the lever that maintains the developing agent carrier out of contact with the photosensitive member when in the separation position, wherein the developing cartridge comprises: a developing cartridge frame; the developing agent carrier supported by the developing cartridge frame; and an engaging portion that protrudes from each side of the developing cartridge frame in a longitudinal direction of the developing agent carrier, wherein the lever is provided on each side of the photosensitive member in the frame so as to engage with the respective engaging portion when the lever is in the contact position.