| 摘要 |
<p>PURPOSE:To set an accurate position to feed paper to a drum by providing a photosensitive paper carrying passage length changing means, a photosensitive position detecting means and a carrying passage controlling means. CONSTITUTION:A carrying passage length changing means which contains moving guides 101, 103 and moving feed rollers 102a, 102b is controlled by a carrying passage controlling means which contains a CPU 22, a motor driving circuit 105 and a motor 106 to freely change the length of the carrying passage of photosensitive paper 1. A paper position detecting means 104 detects the paper feed timing at the end of the photosensitive paper 1 after the end of the photosensitive paper 1 and roll-shaped photosensitive paper 1 are stable in carrying speed and kept in constant speed and transmits detecting information to the carrying passage controlling means. The carrying passage controlling means determines a carrying passage length required in accordance with paper feed timing information transmitted from the paper position detecting means 104 and controls the carrying passage length changing means so that the determined carrying passage length can be equal to an actual carrying passage length. It is thus possible to set an accurate position to feed paper to a drum 8.</p> |
