| 摘要 |
PURPOSE:To prevent the occurrence of transfer deviation by electromagnetically controlling exposure movement of original base and start of paper feeding by way of a switch and a holding circuit by means of a cam integrally turning with photosensitive drum. CONSTITUTION:When the end of the glass plate 67 of the original base is in the specified position, connectors 145 and 150 are disconnected. At the same time, a micro-switch MS 14 is closed by the cam 151 of the original base, by which book original mode is set. When in this state a start switch is closed by the cam cooperating with the photosensitive drum, an original forward feed relay is self-held and the original base is unlocked by the solenoid and at the same time the clutch is coupled, causing the original base to move forward. Next, as the clutch is coupled by other solenoid via holding circuit by means of the micro-switch which is actuated by the cam cooperating with the photosensitive drum, the paper feed roller turns to perform paper feeding at the specified timing. Hence, the occurrence of transfer deviation owing to inertia or the like of the moving base is prevented by electrical controlling via cam without undergoing direct controlling by the cam. |
