초록 ▼

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein said main assembly includes a motor, a main assembly side gear for receiving driving force from said motor and a hole defined by twisted surfaces, said hole being substantially coax

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

대표청구항 ▼

[ What is claimed is:] [1.]1. An electrophotographic image forming apparatus for forming an image on a recording material, to a main assembly of which a process cartridge is detachably mountable, said apparatus comprising:(a) a motor;(b) a main assembly driving rotatable member for receiving driving

[ What is claimed is:] [1.]1. An electrophotographic image forming apparatus for forming an image on a recording material, to a main assembly of which a process cartridge is detachably mountable, said apparatus comprising:(a) a motor;(b) a main assembly driving rotatable member for receiving driving force from said motor;(c) a hole defined by twisted surfaces, said hole being substantially coaxial with said driving rotatable member;(d) a mounting member for detachably mounting the process cartridge, the process cartridge including:an electrophotographic photosensitive drum,process means actable on said photosensitive drum, anda projection engageable with said twisted surfaces, the projection being provided at a longitudinal end of the photosensitive drum, wherein the projection is non-twisted, and when said main assembly driving rotatable member rotates with said hole and the projection engaged with each other, rotational driving force is transmitted from said driving rotatable member to the photosensitive drum through engagement between said hole and the projection, anda resilient member for urging the process cartridge in a longitudinal direction of the photosensitive drum, to bring the projection and said hole into position for engagement, when the process cartridge is mounted to the main assembly; and(e) a feeding member for feeding the recording material.