Patent attributes
A cartridge detachably attachable to a main body of an image forming apparatus, the main body including: a fixing portion that includes a heating rotation member; and a mounting portion on which the cartridge is mounted, the fixing portion including a fixing shutter movable between a first position where a part of the heating rotation member is covered and a second position where the part of the heating rotation member is exposed, the fixing shutter including a force receiving portion that receives a force for causing the fixing shutter to move from the first position to the second position, the cartridge including a photosensitive member, a frame that supports the photosensitive member, and a pressing portion that presses the force receiving portion of the fixing shutter while the cartridge is being mounted on the mounting portion.