Patent ID: 7027756

Claim:
A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, said process cartridge comprising: an electrophotographic photosensitive drum; a developer accommodating portion configured to accommodate a developer; a developing roller configured and positioned to develop an electrostatic latent image formed on said electrophotographic photosensitive drum using the developer accommodated in said accommodating portion; a developer supply roller configured and positioned to supply the developer to said developing roller; a developing device frame supporting said developing roller and said developer supply roller and having said developer accommodating portion; a first gear provided at one longitudinal end side of said developing device frame, said first gear having a driving force receiving gear portion which is engaged with a main assembly gear provided in the main assembly of the image forming apparatus when said process cartridge is mounted to the main assembly of the image forming apparatus; a second gear provided inside said driving force receiving gear portion in a longitudinal direction of said developing device frame, said second gear being effective to transmit the driving force received by said first gear to said developer supply roller; and a supporting member, disposed between said first gear and said second gear with respect to the longitudinal direction of said developing device frame, configured and positioned to support said second gear.