| 摘要 |
A light beam scanning device may include a light source device and an optical deflection mechanism. The optical deflection mechanism may include an optical deflection disk and a motor for driving the disk. The disk face of the optical deflection disk includes an inclined face which is formed in each of a plurality of optical deflection regions divided in a peripheral direction for refracting and emitting a light beam in a direction different from that of refracting and emitting from an adjacent optical deflection region. The light beam scanning device may also include a sub-scanning mechanism for changing the position or the attitude of a specified optical element to vary a main scanning position of the light beam in a sub-scanning direction.
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