| 摘要 |
PROBLEM TO BE SOLVED: To reduce a deterioration in image and reduce a noise caused by a vibration of a driving motor with a simple configuration.SOLUTION: An optical scanner comprises: a driving motor that drives a rotary polygon mirror deflecting a light beam emitted from a light source unit 35; a drive substrate 100 to which the driving motor is attached; an optical box 105 that accommodates the drive substrate 100; bosses 1071-1074 that are erected from the bottom part of the optical box 105 and have bearing surfaces for fixing the drive substrate 100; and a dynamic vibration absorber 502 that suppresses vibration with a mass body 506 according to the drive frequency of the driving motor at which the amplitude of the vibration of the driving motor becomes a predetermined amplitude, attached to a vibratable area of the drive substrate 100 fixed by the bosses 1071-1074 other than an area in contact with the bosses 1071-1074.SELECTED DRAWING: Figure 5 |
