Patent ID: 8798497

Claim:
An image forming apparatus for forming an image on a recording material, comprising: a main assembly; a cartridge supporting member for supporting a cartridge, wherein said cartridge supporting member is movable between an outside position, in which the cartridge is located outside said main assembly, and an inside position, in which the cartridge is located inside said main assembly, and wherein said cartridge supporting member includes a mounting portion on which the cartridge is detachably mountable at the outside position; an opening, provided in said main assembly, through which said cartridge supporting member passes when said cartridge supporting member moves between the inside position and the outside position; a first displaceable member provided movably on said cartridge supporting member, wherein said first displaceable member is contactable with the cartridge and is movable between (i) a first position which permits the cartridge to be mounted on and demounted from the mounting portion when said cartridge supporting member is at the outside position, and (ii) a second position which is different from the first position and in which the cartridge, mounted on the mounting portion, is capable of passing through said opening, when said cartridge supporting member is moved from the outside position to the inside position; and a second displaceable member provided movably on said cartridge supporting member, wherein said second displaceable member is contactable with the cartridge and is movable between (i) a third position which permits the cartridge to be mounted on and demounted from the mounting portion when said cartridge supporting member is at the outside position, and (ii) a fourth position which is different from the third position and in which the cartridge, mounted on the mounting portion, is capable of passing through said opening, when said cartridge supporting member is moved from the outside position to the inside position, wherein said first displaceable member and said second displaceable member are provided on opposite sides of said cartridge supporting member, with respect to a longitudinal direction of the cartridge, wherein said first displaceable member is movable from the first position to the second position based on a force received from the main assembly by the movement from the outside position to the inside position of said cartridge supporting member, and wherein said second displaceable member is movable from the third position to the fourth position based on the force received from the main assembly by the movement from the outside position to the inside position of said cartridge supporting member.