Patent ID: 8180255
Filing Date: 2012-05-15
Classification: G03G

Abstract:
1. A rotation member unit detachable from a casing, comprising: a rotation member configured to rotate when driven, said rotation member being contacted by at least one separator secured to the casing; at least two drive introduction members arranged at both ends of the rotation member in a rotational axis direction of the rotation member, respectively, one of said drive introduction members engaging with a drive transmission member rotated by a motor; a first grounding plate secured to a first of said drive introduction members and electrically connecting to an inner periphery of the rotation member; and a second grounding plate secured to a second of said drive introduction members and electrically connecting to an inner periphery of the rotation member, wherein only one of the first grounding plate or the second grounding plate makes contact with an electrode shaft passing through a respective drive introduction member in the rotational axis direction, to ground the rotation member.