| 摘要 |
PURPOSE:To prevent a misalignment generated at the time of synthesizing a color, by providing independently a control means for controlling a position, on a scanning optical system, a photosensitive body and a transfer body being non-driving bodies, respectively. CONSTITUTION:As for a photosensitive body belt 1, a scanning optical system 4 and a transfer belt 9, servo-motors 21-23 being driving sources are provided separately and independently, respectively, encoders 24-26 are provided additionally, the servo-motor 22 is disposed under the control of a motor control board 27, and also, the servo-motor 21 and the servomotor 23 are placed under the control of a motor board 28. Accordingly, the scanning optical system, the photosensitive body and the transfer body being non-driving bodies are controlled separately and independently, respectively, and an exact and arbitrary control operation can be executed. In such a way, the misalignment of the three is prevented completely. |
