Color electrophotographic image forming apparatus

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 one of the cartridge supporting member and 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;
• and
• a pressure member, which is provided to the other of the cartridge supporting member and the apparatus main body, and 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 the 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 the movement of the cartridge supporting member at positions other than the mounting and detaching position