| 摘要 |
PURPOSE:To stop the recovering operation of automatic power for the purpose of improving the convenience of the use when a different magnification is selected again in the intervals of a set time. CONSTITUTION:A relay contact a-1 is operated in relation to a copying mechanism so that this contact is opened in the copying cycle of the copying machine and is closed after the completion of the copying cycle. Consequently, since power source voltages of an automatic power reset control circuit I and a power selecting circuits II are cut off during the copying cycle, the automatic power reset function and the power selecting function are not operated then. If a power selecting push-button switch SW3 is depressed to set power 2 in the intervals of a set time, a power varying device is driven, and the power reset operation is interrupted. As the result, a transistor TR2 is not made conductive, and a power reset signal is not outputted to the power selecting circuit II, and therefore, the power copying state is held in power 2 as it is, and thus, the convenience of the use when a different power is selected again in the set time is improved. |
