| 摘要 |
PURPOSE:To make the mounting and dismounting of the master sheet easy by providing a clutch means between the drum and the rotation-driving member of the drum in a copying machine or the like. CONSTITUTION:A photosensitive drum 1 freely fits to a revolving shaft 18 and revolves as the roller 15a of a clutch lever 15 engaged with the groove 17a of the clutch disc 17 integral with the shaft 18 is pushed in the counterclockwise revolution of the shaft 18. On the other hand, when the hole 3'a provided to the hook member 3' of the other end of a photosensitive sheet 2 is engaged to a hook part 8a of a lever 8 in the state where a tightening lever 8 is held turned in the counterclockwise direction and the drum 1 is turned counterclockwise, then the roller 15a goes down the cam crest 17b of the disc 17 and again engages with the groove 17a. The lever 15 then turns clockwise and the sheet 2 is mounted on the peripheral surface of the drum 1. By disengaging the member 3' from the hook part 8a, the sheet 2 may be removed from the drum 1. |
