| 摘要 |
PURPOSE:To easily change the color of a picture with a simple constitution, by providing plural developing devices of different colors and setting a photosensitive body under a condition rockingly so as to make the photosensitive body to cope with the developing devices. CONSTITUTION:An arm 10 is provided in a state rockingly around the position of a fixed mirror 3a and a photosensitive drum 4 is supported by the shaft 4a at the tip end of the arm 10 freely and rotatably. In the vicinity of the drum 4, developing devices 9a and 9b storing different colors of developing agents are arranged. When the color of a picture is changed with such constitution, the drum 4 is faced to the developing device 9b by turning the arm 10 by an angle theta and, at the same time, the fixed mirror 3a is turned by an angle which is the half of the turning angle theta of the arm 10 by means of a prescribed gear mechanism. Therefore, the optical path length does not change and, as a result, no distortion is produced in the picture thus obtained and the color of the picture can easily be changed. |
