| 摘要 |
<p>A device adapted for use with copying apparatus wherein the feed speed of an original and a strip of photosensitive material can be set at any level as desired, comprising a plurality of detector elements disposed in the path of travel of the strip of photosensitive material and the original respectively for detecting their arrival at respective predetermined positions, and a plurality of variable timers each adapted to be rendered operative after a lapse of time varying in inverse proportion to the feed speed. Upon receipt of signals from the detector elements, the timers are rendered operative after the lapse of a preset time and actuate a first electromagnetic means moving the original ahead of the strip of photosensitive material for a predetermined distance and another electromagnetic means for actuating a cutter for cutting the strip of photosensitive material to provide a sheet of a length consistent with the length of the original. The device is effective to preclude any errors which might otherwise be made in the feed of the strip of photosensitive material when the feed speed is varied.</p> |
