| 摘要 |
PURPOSE:To average flaws and wear by providing a means which moves a photosensitive body in the direction of a revolving shaft by a minute distance at a timing other than the timing from the exposure stage to the transfer stage of the photosensitive body. CONSTITUTION:A coiled spring 4 is interposed between a left side plate 9 and a photosensitive drum 3 and is so energized that the photosensitive drum 3, namely, a photosensitive body part is moved right. An oblique disc cam 1 is brought into contact with the right end of a shaft 7 and is driven by a motor 2. If the cam is so controlled that it is rotated at a certain angle at an optional timing other than the timing when image formation is affected from the exposure stage to the transfer stage in the copying process, the position where a peeling claw or a cleaning blade is brought into contact with the photosensitive drum 3 is changed for every copying. Thus, flaws due to scratching of the peeling claw and the wear of the surface of the photosensitive body due to a part where the contacting force of the cleaning blade is strong are averaged. |
