DRIVING FORCE TRANSMISSION MECHANISM FOR IMAGE FORMING APPARATUS AND PROCESSING CARTRIDGE

摘要

The present invention provides a driving force transmission mechanism for an image forming apparatus and a process cartridge. The transmission mechanism includes a photosensitive drum driving component (10) and an image forming apparatus driving head (20). The driving component (10) includes a drum shaft (3) which axially projects from an end of a photosensitive drum (1) and a boss (4) which axially projects from an end surface of the drum shaft (3). A tooth (5a) is obliquely arranged on a side wall (4b) of the boss and projects in a radial direction. The driving head (20) includes a recess (11) with a twisted-surface and matching with the boss (4), the recess has a polygonal cross section with a twisted corner section. The process cartridge includes the driving component. The photosensitive drum driving component is easy to manufacture and is not easy to be damaged when using for a long time.