| 摘要 |
<p>PURPOSE:To obtain a double sided tray device by which a sheet remaining in an internal tray or various kinds of components are prevented from being damaged by prohibiting an ordinary operation for a sheet position regulating means when the sheet remains in the internal tray at the time of starting the transfer operation of an image forming device. CONSTITUTION:An automatic original supplying device 2 is provided at the upper part of a copying machine main body 1, and an optical system which performs a latent image forming function on a photosensitive material 3, a copying mechanism such as developing part 5 and a transfer part 6, etc., and plural paper supplying devices 8a-8c are arranged in the inside. Also, the internal tray 11 is arranged at the upper part of the device 8a, and when a sheet P of transfer paper enters in the tray 11, the side fence 20a of the paper regulating means 20 is moved by a small distance (a) by a pulse motor 26. Also, it is moved by the small distance (a) again just before the sheet P of transfer paper drops to a bottom 22. And when the transfer operation is started, the fact that the sheet P of transfer paper remains in the tray 11 is detected by a detecting means 21, and the movement of the regulating means 20 is prohibited by the control means.</p> |
