| 摘要 |
A curvature correction device (200Y) used in an optical scanning unit is described. The optical scanning unit includes a light beam emitter to emit a light beam, a deflection unit to deflect the light beam in a main scanning direction, and a reflection mirror (46Y) to reflect the light beam. The curvature correction device (200Y) includes a holder (52Y) and a pushing unit (65Y). The holder (52Y) holds the reflection mirror (46Y) in a state in which the reflection mirror (46Y) is forcibly bent in a first direction. The pushing unit (65Y) pushes the reflection mirror (46Y) held by the holder (52Y) to bend the reflection mirror in a second direction opposite the first direction. The curvature correction device (200Y) corrects the curvature of the main scanning line by adjusting an amount at which the pushing unit(65Y) pushes the reflection mirror (46Y). The holder (52Y) has a stiffness larger than the stiffness of the reflection mirror (46Y). |
