Patent ID: 7486907

Claim:
An electrophotographic image forming apparatus to which a process cartridge including an electrophotographic photosensitive member is detachably mountable, said electrophotographic image forming apparatus comprising: a main assembly frame having an opening; a main assembly door movable between a closing position for closing said opening and an opening position for opening said opening; a tray for carrying said process cartridge, said tray is movable among a latent image formation position which is inside said main assembly frame and is taken when said main assembly door is at the closing position and in which a latent image can be formed on said electrophotographic photosensitive member, a mounting and demounting position which is taken when said main assembly door is at the opening position in which said tray is protruded out of said main assembly frame through said opening to permit mounting and demounting of said process cartridge thereto, and a movable position which is between said mounting and demounting position and said latent image formation position in which said tray is movable to said latent image formation position in interrelation with movement of said main assembly door from said opening position to said closing position; and a regulating member movable between a regulating position for regulating movement of said main assembly door from said opening position to said closing position when said tray is at a position which is in a mounting and demounting position beyond said movable position, and a permitting position for permitting movement of said main assembly door from said opening position to said closing position when said tray is at said movable position.