Patent ID: 6029032
Filing Date: 2000-02-22
Classification: F16D,G03G

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