Patent ID: 8059989

Claim:
A color electrophotographic image forming apparatus having an apparatus main body to which a plurality of cartridges are detachably mounted to form an image on a recording medium, the color electrophotographic image forming apparatus comprising: a cartridge supporting member, which moves between an inside position that is positioned inside the apparatus main body and a mounting and detaching position at which the plurality of cartridges are mountable and detachable, while supporting the plurality of cartridges; an engaging portion, which is provided to the apparatus main body, and to a position corresponding to the mounting and detaching position of at least one cartridge among the plurality of cartridges supported by the cartridge supporting member; a pressure member, which is provided to the cartridge supporting member, and which is disengageably engaged with the engaging portion, wherein a cartridge to be replaced is discriminated among the plurality of cartridges, and by engaging the engaging portion with the pressure member, a load required for movement of the cartridge supporting member when the cartridge to be replaced reaches the mounting and detaching position is made larger than a load required for movement of the cartridge supporting member at positions other than the mounting and detaching position; a movable member, which is movably provided to the apparatus main body, and comprises a groove portion as the engaging portion; and a control portion, which discriminates a cartridge to be replaced upon receipt of a developer remaining amount signal, and moves and stops the movable member in accordance with the cartridge to be replaced.