| 摘要 |
PURPOSE:To surely prevent the fluctuation of the speed of a photosensitive drum with a simple constitution by linking the photosensitive drum and a drum supporting shaft through a one-way clutch and a rotation driving force transmitting mechanism and attaching a fly wheel to the drum supporting shaft. CONSTITUTION:The drum supporting shaft 11 on this side protruding from an end part on this side of the photosensitive drum 1 is turnably supported by the bush 14 of a drum bearing 13 provided on a front plate 12. The one-way clutch 17 provided at the linking part of the photosensitive drum 1 with the drum supporting shaft 11, the rotation driving force transmitting mechanism and the fly wheel 23 attached to the drum supporting shaft 11 are provided in the device. Then, an engaging groove 25 constituting the rotation driving force transmitting mechanism is formed on the flange 15 of the photosensitive drum 1. Thus, the fluctuation of the speed of the photosensitive drum 1 is surely prevented with the simple constitution. |
