Patent ID: 8369744

Claim:
A process cartridge comprising: i) a photosensitive drum rotatable about a drum axis thereof; ii) a rotatable developing roller configured to develop a latent image formed on said photosensitive drum; iii) a coupling member provided at an axial end portion of said photosensitive drum and rotatable about a coupling axis thereof so as to transmit a driving force to said photosensitive drum, said coupling member being capable of inclining relative to said photosensitive drum so that the coupling axis inclines relative to the drum axis; and iv) a regulating portion surrounding said coupling member to confine a range of the inclination of said coupling member, wherein said regulating portion is provided with a portion that opens in a direction away from said drum axis and away from said developing roller, and wherein an angle between the coupling axis and the drum axis is larger when at least a part of said coupling member is in said portion that opens than when said coupling member contacts another portion of said regulating portion.