Patent ID: 6072968
Filing Date: 2000-06-06
Classification: G03G

Abstract:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:a cartridge frame;an electrophotographic photosensitive drum having a cylinder and a photosensitive layer thereon;process means actable on said photosensitive drum;a drum shaft for rotatably supporting said photosensitive drum on said cartridge frame, said drum shaft extending through said photosensitive drum and having a length enough to be supported by said cartridge frame at one end thereof and at the other end thereof;longitudinal projections projecting outwardly from lateral walls of said cartridge frame, said projections having respective holes with which the one end and the other end of said drum shaft are engaged respectively; anda preventing member for preventing said drum shaft from disengaging from said cartridge frame,wherein said preventing member has an inside surface with an inward projection which is engaged with a groove formed in an outer periphery of the other end of said drum shaft, wherein said preventing member is disposed inside an outer end of one of said projections in a longitudinal direction of said photosensitive drum.