Coupling member, process cartridge, electrophotographic image forming apparatus and assembling method

摘要

A coupling member for coupling a first frame and a second frame of a process cartridge (B) detachably mountable to a main assembly of an image forming apparatus, the process cartridge including the first frame (12) having an electrophotographic photosensitive member (7) and a photosensitive member mounting portion for mounting the electrophotographic photosensitive member (7), the second frame (13) having a developing means (10) for developing a latent image formed on the electrophotographic photosensitive member (7) and a developing means mounting portion for mounting the developing means (10), the coupling member includes a connecting portion for rotatably coupling the first frame and second frame; a spring mounting portion for mounting a spring for applying elastic force to the first frame and second frame; and a coupling member locking portion for locking the coupling member to the second frame. The cartridge frame (12) is also provided with a shutter member (14) for exposing or covering the exposure opening (9a) and the transfer opening (9b).