Patent ID: 8588647

Claim:
An electrophotographic image forming apparatus comprising: (i) a main assembly of said apparatus including: (i-i) a driving member configured and positioned to apply a driving force; and (ii) a process cartridge detachably mountable to said main assembly of said apparatus, said process cartridge including: (ii-i) a photosensitive drum; (ii-ii) a developing roller configured and positioned (a) to develop an electrostatic latent image formed on said photosensitive drum and (b) to be rotatable about an axis thereof; (ii-iii) a coupling member provided adjacent to one axial end of said developing roller, said coupling member including: (ii-iii-i) a driving force receiving portion configured and positioned (a) to engage with said driving member to receive a driving force for rotating said developing roller and (b) to be movable relative to said developing roller in a direction crossing the axis of said developing roller; and (ii-iv) a holding portion configured and positioned (a) to rotatably hold said driving force receiving portion at a periphery of said driving force receiving portion in a side remote from said developing roller and (b) to be movable in a direction crossing the axis of said developing roller together with said driving force receiving portion.