| 摘要 |
PURPOSE: To set a primary fixed frequency of a support frame wherein optical parts for scanning an optical beam are arranged higher than a frequency of vibration generated by an optical deflector. CONSTITUTION: A body frame 101 of an image information recorder is a comparatively firm structure, and a laser scan unit 102 and an optical scanner frame unit 103 are arranged on its upper part. Those are fixed under a state wherein mutual positional relation is adjusted by a first fixing means 104 and integrated to constitute an optical scanner 105. The laser scan unit 102 is fixed to the body frame 101 by a first fixing means 106, and the optical scanner frame unit 103 is fixed to the body frame 101 by a third fixing means 107. Thus, the optical scanner 105 is divided into two units, and a size of the whole is miniaturized to raise a fixed frequency. When a rib of a shape wherein a triangle which is not shown in the figure is continued is arranged below a placed surface of the optical parts of the laser scan unit 102, the fixed frequency is further increased. |
