| 摘要 |
PURPOSE:To prevent missing of copies by detection of failure in conveying by comparing the number of sheets of inserted originals and the number of sheets of the originals in the circuit for a repeating route and checking the same. CONSTITUTION:In the case of circulating n-sheets of originals O1, O2...On by m-times and copying the same, the 1st detector A detects the preceding ends of the inserted originals O1-On successively and the detection signals thereof are counted with the 1st counter CA. When the 2nd detector B detects the first original O1, a check pulse transmitter E starts operating, and the 2nd detector B detects the preceding ends of the originals O2-On in succession, then the 2nd counter CB counts the detection signals from the 2nd detector B. During this time a comparator D is comparing the values of the counters CA, CB at all times, and according to the check pulses transmitted from a check pulse transmitter E upon lapse of a prescribed time therefrom, a deciding device F decides the result of comparison of the comparator D. |
