| 摘要 |
PURPOSE:To promote a drop of a sheet with empty weight and return the uppermost sheet to a regular position, in a copying machine feeder with a liftable sheet mounting bed for picture recording paper, by constituting the feeder such that after recording is ended, the loading bed is lifted minimum one time. CONSTITUTION:Copying work is started from a condition a loading bed 17 is placed in the uppermost position. In progress of copying, paper is decreased, and a signal of a detecting means 22, lower than the uppermost detecting position, is changed from 1 to 0 to rotate a motor 11 to the rising direction. Accordingly, the loading bed 17 rises, and an output signal of the detecting means 22 again becomes 1 to stop the rising. In an end of copying, with the lapse of delay time, the motor 11 is rotated to the lowering direction to lower the loading bed 17. In this way, the upper position detecting means 22 again becomes 0, and the mounting bed 17 continues to lower, then an output of a detecting means 23 changes to 1 to stop the lowering. Then the bed rises. In this turnaround time, transfer paper drops by empty weight, and the uppermost paper can be set to a regular position. |
