| 摘要 |
PURPOSE:To safely perform adjusting work and maintenance by freely opening and closing an optical system unit, in which an optical system device and a driving means are stores, to a copying machine body and supplying power to the driving means from the machine body through a connector provided in the unit and detecting the non-connection state of the connector to stop the power supply. CONSTITUTION:An optical system unit 2 is freely opened and closed to a copying machine body 21 through a shaft 2a. When the unit 2 is opened, a plug 1a of a connector 1 and a jack 1b provided in the machine body 21 are disconnected. In such a non-connection state, a voltage +V from a controller 13 is not earthed, and the potential on the base side of a transistor (detector) TR goes to +V, and the voltage +V is applied to a relay Ry 1 to turn off it, and the power of an AC power source is not supplied to a driving part 14 such as a motor. |
