| 摘要 |
PURPOSE:To increase a copying speed while holding the processing speed of image formation constant by carrying on copying operation on one sheet of transfer paper continuously as long as this sheet of transfer paper has no trouble even if the other sheet of transfer paper jams. CONSTITUTION:Copying operation is normally interrupted in case of jam occurrence, but if a jam occurs on a conveyance path in another copying mode, the other copying operation is carried out unless the jam position affects the other copying operation. The jam position where there is no influence is a paper unfeeding jam in a paper feeding device or both-surface tray or paper discharge defective jam at a paper discharge part. Branches B and E of flow charts (a) and (b) correspond to the paper unfeeding jam and paper discharge defect respectively. A paper feed sensor when turning on during the passing of paper turns on after paper feeding operation and a paper discharge sensor is positioned at a paper discharge port and turns on during the passing of paper. Further, the remaining quantity of copies at an interruption side is displayed. |
