Patent ID: 9188945
Filing Date: 2015-11-17
Classification: G03G

Abstract:
1. A cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image on a recording material, said cartridge comprising: a rotatable member including a metal shaft, said rotatable member being supported rotatably and movably an axial direction of said metal shaft by a frame, wherein a bias is to be applied to said metal shaft; an electroconductive member, supported movably in the axial direction of said metal shaft, said electroconductive member being in contact to an end surface of said metal shaft at one end side of said metal shaft for constituting at least a part of an electroconductive path for electrically connecting said metal shaft and a contact member provided in the main assembly when said cartridge is mounted in the main assembly; and an urging portion for urging said metal shaft via said electroconductive member in a direction from the one end side to another end side of said metal shaft, wherein said electroconductive member includes a contact portion where said electroconductive member is contacted to said end surface of said metal shaft at a portion other than a rotation center portion of said metal shaft at said end surface, and wherein said contact portion has a hollow shape at said rotation center portion of said metal shaft at said end surface such that said contact portion does not contact a center portion of said metal shaft at said end surface.