A cartridge (B) includes a photosensitive drum (62), a movable member (1001) movable relative to the photosensitive drum to control an inclination angle of a drive transmission member (81, 1081). The movable member is movable between a first position for reducing an inclination angle of the drive transmission member relative to the photosensitive drum and a second position retracted from the first position. By this, driving connection can be smoothly carried out.