Patent ID: 8503907

Claim:
An electrophotographic image forming apparatus having a development cartridge detachably received in a main body thereof for forming a toner image through a development nip formed by a pressing contact between a photoconductive member and a developing roller each arranged in the development cartridge, the apparatus comprising: a development nip control member moveably arranged on the development cartridge such that the development nip control member is moveable between a first position and a second position, the development nip control member causing the photoconductive member to be separated from the developing roller when the development nip control member is in the first position, the development nip control member allowing the photoconductive member to be in contact with the developing roller to thereby form the development nip therebetween when the development nip control member is in the second position; and a position switching member arranged in the main body such that the position switching member interferes with the development nip control member to thereby cause the development nip control member to move from the first position to the second position when the development cartridge is detached from the main body.