| 摘要 |
PROBLEM TO BE SOLVED: To realize a scanner motor driving control system which is hard to be influenced by a noise and to form a stable image. SOLUTION: A scanner motor drives to rotate a rotational polygon mirror that deflects a laser beam for forming an image by scanning it on a photosensitive body. A scanner motor control section 2 controls the scanner motor so that the rotating speed of the rotational polygon mirror is controlled in a prescribed range. A driver 3 of the scanner motor and the scanner motor control section 2 are connected with two electric wires 2A, 2B. The scanner motor control section 2 instructs the driver 3 to be in the accelerating, decelerating or neutral condition by a combination of levels of a first signal S5 and a second signal S6 outputted to the electric wires 2A, 2B. |
