| 摘要 |
An optical scanning unit (27) includes a light source unit, an optical housing (60), an optical device (41, 42, 44, 45), and a fixing member (65). The light source unit (40) emits a light beam. The optical housing (60) receives and supports the light source unit (40). The optical device deflects the light beam and focuses the light beam on a light receiving member. The fixing member (65) fixes the light source unit (40) to the optical housing (60) by applying a pressure to the light source unit (40). The pressure is constantly applied in a direction which is substantially perpendicular to an optical axis direction of the light source unit (40). |
