| 摘要 |
PROBLEM TO BE SOLVED: To obtain an optical scanner which has an angle regulating mechanism of a reflection mirror and surely suppresses the bending vibration of a reflection mirror even with the constitution corresponding to a plurality of resolution and printing speeds. SOLUTION: The optical scanner 10 turnably supports the reflection mirror 26 by a first supporting section 42, a second supporting section 44 and a projecting part 36 of a lower supporting plate 30 and energizes a mirror back 26B side by a spring 50. The angle oaf a reflection surface 26A is regulated by a regulating screw 48 of a regulating bracket. The lower supporting plate 30 for supporting a mirror base surface 26C is changed in its mounting direction by removing a screw 32, by which the position of the projecting apt 36 may be changed. As a result, the supporting point of the reflection mirror 26 is changed and the resonance frequency at which the reflection mirror 26 induces resonance with a vibration source may be changed.
|
