Image forming apparatus

An image forming apparatus for forming an image on a recording material, said image forming apparatus comprising:

• a cartridge supporting member movable between an inside position in which said cartridge supporting member is inside a main assembly of said image forming apparatus in a state of carrying a first cartridge and a second cartridge, and a drawn position in which said cartridge supporting member is outside said main assembly of said apparatus and in which said first cartridge and said second cartridge are mountable and demountable relative to said cartridge supporting member, wherein said cartridge supporting member includes a first mounting portion to which said first cartridge is mountable, and a second mounting portion to which said second cartridge is mountable, said second mounting portion being disposed upstream of said first mounting portion with respect to a drawing direction in which said cartridge supporting member is moved from the inside position to the drawn position;
• a first guide portion, provided on said cartridge supporting member, for guiding mounting and demounting of said first cartridge relative to said first mounting portion;
• and
• a second guide portion, provided on said cartridge supporting member, for guiding mounting and demounting of said second cartridge relative to said second mounting portion, wherein a downward movement distance of said second cartridge when said second cartridge is demounted from said second mounting portion is larger than a downward movement distance of said first cartridge when said first cartridge is demounted from said first mounting portion.