A process cartridge includes a developing cartridge, drum cartridge, and end member. The developing cartridge and drum cartridge include first and second driving force receiving units, respectively. The second receiving unit is disposed on the same side on which the first receiving unit in an axis direction of photosensitive drum. A developing frame is movable within a prescribed distance in the axis direction relative to a photosensitive drum frame. The photosensitive drum is movable in the axis direction relative to the drum frame within a predetermined distance. The end member includes a drum contact surface, developing frame contact surface, and external member contact surface. When the first and second receiving units are in a predetermined state, a photosensitive drum contacts to the drum contact surface, the developing frame contacts to the developing frame contact surface, the external member contact surface contacts to an external member.