| 摘要 |
<p>PURPOSE:To excellently perform transfer by providing a distance regulating member, a supporting arm and an elastic body and always holding a photosensitive drum, a transfer device and an entrance roller in necessary fixed positional relation. CONSTITUTION:The discharge electrode 17 of the transfer device 10, the entrance roller 18 and the fulcrum of the arm 19 are previously set in the fixed positional relation and the size of the distance regulating member 22 is set so that the necessary fixed positional relation among the photosensitive drum 4, the transfer device 10 and the roller 18 can be obtained. The frame of the transfer device 10 pressed by the elastic body 25 is supported by the arm 19 and rocked to the photosensitive drum side, and the member 22 regulates the distance between the photosensitive drum 4 and the entrance roller 18. Therefore, the photosensitive drum 4, the transfer device 10 and the entrance roller 18 are held in the necessary fixed positional relation without receiving the effect of the working error or the assembling error of the photosensitive drum 4 and without influencing the positional relation of an optical unit to the photosensitive drum 4. Thus, the transfer is excellently performed.</p> |
