| 摘要 |
<p>An optical scanner (4; 4A) scans a plurality of objects respectively with optical beams and includes a deflector assembly including at least one deflecting unit (41a, 41b; 41c, 41d) that deflects the optical beams in a main scanning direction and a plurality of reflection optical systems each including a plurality of reflection mirrors (44; 45; 46) to reflect one of the optical beams and a curvature adjustment unit (650, 52, 54). The curvature adjustment unit (650, 52, 54)forcibly curves one of the reflection mirrors in a direction opposite the main scanning direction with a holder structure (52; 54), pushes the reflection mirror in a direction opposite the direction of the forcible curve with a pressure unit (650), and adjusts a direction and an amount of curvature of a main scanning line by adjusting an amount that the pressure unit (650) deforms the reflection mirror (44; 45; 46). The main scanning lines on the plurality of objects (10) are curved in a similar direction due to the forcible curve of the reflection mirror (44; 45; 46).</p> |
