| 摘要 |
PURPOSE:To prevent a defect in electric contacting from occurring by connecting a developing device in revolving structure to a device body electrically and securely by wiring by connecting electric wires directly. CONSTITUTION:The electric wires 86-89 are in a pulley winding state (a) when, for example, a developing device 14b is selected among 14a-14d and then enters a pulley winding state (c) when rotary frames 37 and 38 are rotated counterclockwise by 90 deg. so as to select the next developing device 14a in the former state. Further, then enter a pulley winding state (d) when the frames are rotated counterclockwise further by 90 deg. so as to select the next developing device 14c. At this time, the electric wires 86-89 which connect the developing device to the device body side 1 directly are held in an invariably excellent wiring winding state so that the electric wires are neither slacked nor tensed between a concentration wiring pulley 85 and distribution wiring pulley 81-84. |
