Patent ID: 7778570

Claim:
An image forming apparatus capable of forming an image on a recording medium, said apparatus comprising: a main body frame; and a supporting member that is movable between an inner position in which said supporting member is located at an inner side of said main body frame and an outer position in which said supporting member is located at an outer side of said main body frame, and that has a mounting portion on which a first cartridge and a second cartridge are detachably mounted, wherein the mounting portion mounts the first cartridge on the most downstream side of said mounting portion in a drawing direction in which said supporting member is drawn out from said inner position to said outer position, and said mounting portion mounts the second cartridge on an upstream side of said the first cartridge in the drawing direction, and in a state where the first cartridge and the second cartridge are mounted on said mounting portion, the first cartridge has a protruded portion that protrudes in an orthogonal direction orthogonal with respect to the drawing direction more than the second cartridge protrudes in the orthogonal direction.