| 摘要 |
PURPOSE:To facilitate the exchange of a photoreceptor drum with respect to a driving shaft without loosening the attachment of the photoreceptor drum to the driving shaft. CONSTITUTION:In this photoreceptor holding apparatus constituted in such a manner that the photoreceptor drum 1 is made a cartridge together with other members and attached to the driving shaft 20 provided on a main body side, so as to be loaded/unloaded, a flange 18 in the rear part, of the drum 1 is engaged with the driving shaft 20 in a rotational direction, a boss part 17a having a slit 29 in an axial direction is provided on a flange 17 in the front and a cam surface is provided on the outer periphery of the boss part 17a as well. Then, a clamping member having a cam part engaged with the cam surface and pressing it in a radial direction is fitted into the boss part and the fitting diameter of the flange 18 of the rear into the driving shaft 20 is made larger than that of the flange 17 of the front. |
