| 摘要 |
PURPOSE:To count and display always correct number of sheets by correcting the stepping of a copy counter when paper and an original fail to separete, without giving any priority with time to be operated between two detectors. CONSTITUTION:When the superposed sheets of photographic paper and an original are guided and ejected in a direction B or C on account of their failure in separation, only the detector S1 or S2 goes on and therefore the FF41 of a normal separation detecting circuit 40 does not operate. However, with respect to a nonseparation detecting storage circuit 60, when the 3rd detector S3 detects the trailing end of the superposed sheets, the output of an exclusive-OR gate 68 is an H level, and therefore, an FF69 is put in a set state and storage the same temporarily. The set output thereof is the D input of the FF72 of a counter correcting circuit 70. When the operator inserts the ejected photosensitive paper through a photosensitive paper insertion port 19 after this, the 2nd detector S2 goes on and therefore the C input of the FF72 of the counter correcting circuit goes to the H level and the FF72 is set. This set output passes through the OR gate and steps a counter 51. |
