| 摘要 |
PURPOSE:To reduce the power consumption and a noise by advancing a developing machine to a developing position and allowing the cam face of a cam held at its position to abut on an elastic plate provided projectingly from the developing machine, from the vertical direction. CONSTITUTION:With respect to an elastic plate 6, the center of a cam 5 is set so that cam faces 5a, 5b are pressed against the elastic plate 6 from the vertical direction. That is, it is executed so that reaction force for working on the cam faces 5a, 5b through the elastic plate 6 goes to the center of the cam 5, and rotational force does not work on the cam 5. Accordingly, the rotation of a motor for driving a cam shaft 4 can be allowed to remain stopped, and it becomes unnecessary to leave the motor rotating at the time when taxing has been ended, and in order to make preparations for taxing at the time of copying. In such a way, the power consumption and a noise can be reduced. |
