Patent ID: 8086140

Claim:
A photosensitive body for electro-photography comprising: a photosensitive drum comprising a drum body made from an electrically conductive material, the drum body having an outer peripheral surface and an inner peripheral surface, and defining a center axis; and, a photosensitive layer formed on the outer peripheral surface; a shaft aligned with the center axis, the photosensitive drum being rotatable relative to the shaft, and the shaft comprising a cylindrical shaft body made from an electrically conductive metal containing a substrate and having an outer surface, and an electrically conductive metal coating formed on the outer surface of the shaft body and made from a material having an ionization tendency lower than that of the substrate of the shaft body; and a contact member having an engagement portion in fitting engagement with the inner peripheral surface of the drum body, and a contact portion resiliently and slidingly contacting the shaft to provide an electrical contact between the photosensitive drum and the shaft, the contact portion being made from an electrically conductive material, and the ionization tendency of the metal coating being lower than that of the material of the contact portion.