| 摘要 |
PURPOSE:To obtain the laser scanner which can execute write at a high speed simultaneously with two pieces or more of intermediate mediums without adding a rotary polygon mirror whose cost is high by combining two sets or more of light beam generating devices for holding the rotary polygon mirror in common. CONSTITUTION:Laser diodes 2a, 2b and 2c are placed in a position of a point symmetry against the rotation center of a rotary polygon mirror 1. Intermediate mediums 4a, 4b and 4c are also placed in a position of a point symmetry against the rotation center of said rotary polygon mirror 1. In this state, by inputting the image signals corresponding to R, G and B to the laser diodes 2a-2c, respectively, and rotating the rotary polygon mirror 1, information corresponding to each of the intermediate mediums 4a-4c can be recorded. |
