초록 ▼

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 side gear for receiving driving force from the motor and a hole defined by twisted surfaces, the hole being substantially coaxial

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 side gear for receiving driving force from the motor and a hole defined by twisted surfaces, the hole being substantially coaxial with the gear, the process cartridge includes an electrophotographic photosensitive drum; process means actable on the photosensitive drum; and a projection engageable with the twisted surfaces, the projection being provided at a longitudinal end of the photosensitive drum, wherein the projection is non-twisted, and when the main assembly side gear rotates with the hole and projection engaged with each other, rotational driving force is transmitted from the gear to the photosensitive drum through engagement between the hole and the projection.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a driving rotatable member for receiving driving force from the motor, and a hole defined by twisted surfaces, the

[ What is claimed is:] [1.]1. A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a driving rotatable member for receiving driving force from the motor, and a hole defined by twisted surfaces, the hole being substantially coaxial with said driving rotatable member, said process cartridge comprising:an electrophotographic photosensitive drum;process means actable on said photosensitive drum; anda 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 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.