| 摘要 |
<p>PURPOSE:To prevent the trouble in paper feed by increasing the nipping pressure by a certain pressure when a paper is not detected after the lapse of a prescribed time after the start of the paper feed by a paper feeding roller, in the paper feeding device of a copying machine. CONSTITUTION:A paper feeding roller 6 is revolved on the basis of the instruction of a control circuit 15, and paper feed is started. When a paper detection switch 14 does not operate after the lapse of a prescribed time after the start of revolution of the paper feeding roller 6, the control circuit 15 revolves a lift motor 5 for an X-pulse and raises an elevator board 1, and the upper surface of a paper P is pressed onto the paper feeding roller 6, and the nipping pressure of the paper feeding roller 6 is increased by a certain pressure. with this constitution, the trouble in paper feed can be prevented.</p> |
