Patent ID: 6175706
Filing Date: 2001-01-16
Classification: F16D,G03G

Abstract:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein said main assembly includes a motor, a rotatable driving member for receiving a driving force from said motor and a main assembly recess defined by twisted surfaces, said main assembly recess being substantially coaxial with said rotatable driving member, and a main assembly projection provided in the main assembly recess and substantially coaxial with said rotatable driving member, said process cartridge comprising:an electrophotographic photosensitive drum;process means actable on said photosensitive drum;a twisted cartridge projection engageable with said twisted surfaces, said cartridge projection being provided at a longitudinal end of said photosensitive drum; anda cartridge recess provided at a free end of said cartridge projection and substantially coaxial with said cartridge projection, wherein when said process cartridge is mounted to the main assembly, said main assembly projection enters said cartridge recess;wherein, when said rotatable driving member rotates with said main assembly recess and cartridge projection engaged with each other, a rotational driving force is transmitted from said rotatable driving member to the photosensitive drum through engagement between said main assembly recess and said cartridge projection.