| 摘要 |
<p>PURPOSE:To make stable paper feed and timing control performable, by stopping drive at the upstream side of a roller if duration that paper is stopped by a resist roller exceeds the specified value, and making a loose quantity and a paper interval so as to be controlled. CONSTITUTION:When an end of the n-th transfer paper 19 is detected by a resist sensor 23 on this side of a resist roller pair 22, each rotation of these paired rollers 22 is stopped, but since the paper is continuously fed by a feed roller pair 21 even if the end comes into collision with the paired rollers 22, a loose part A is formed in a spot short of these paired rollers 22. This loose quantity is allowable up to a range of 30mm but if it becomes more than this range, each stop time of these paired rollers 22 is counted up, and when reaching the value equivalent to a looseness of 30mm, a driving clutch 25 of the whole paper feed part is turned off, whereby such a possibility that the loose part A is bent, bitten by these paired rollers 22, or bent in a Z-type is prevented from occurring. Thus, a paper interval is almost equal to an original circulating interval, whereby control can be done at the same timing so that paper feeding becomes easy, and even if the stop time comes longer, looseness will not grow larger, thus feed control is stably performable.</p> |
