Patent ID: 6909866

Claim:
An image forming system having a process cartridge, the system comprising: a main body, wherein the main body includes a drive source and a gear which can be driven rotatable by the drive source and which includes a coupling protrusion in a radial direction; a photosensitive drum; a process unit which acts upon the photosensitive drum; a coupling hole which is provided at an end part of a radial direction of the photosensitive drum; wherein the photosensitive drum set in the main body rotates by receiving a drive force from a drive source via the coupling protrusion and the coupling hole when a cover member of the main body is closed, and the coupling protrusion and the coupling hole are fit together; and a member which slides the gear of the main body when the cover member is opened or closed; wherein when the cover member is opened, the coupling protrusion of the gear and the coupling hole of the photosensitive drum are released from a fit state, and the process cartridge can be removed from the main body, and when the cover member is closed, the coupling hole of the photosensitive drum and the coupling protrusion of the gear are fit together, and the photosensitive drum can be driven rotatable by the drive source.