| 摘要 |
A light scanning apparatus, including: a light source; a deflector having a rotary polygon mirror configured to deflect the light beam emitted from the light source, and a motor configured to rotate the polygon mirror; a plurality of reflecting mirrors configured to reflect the light beam to the photosensitive member; and an optical box on which the light source is mounted, wherein the optical box has an installation wall on which the deflector is installed and a support wall positioned on a side of the photosensitive member with respect to the polygon mirror, the support wall being provided with a support portion configured to support at least one reflecting mirror, a stepped portion having a plurality of steps is formed between the installation wall and the support wall, and a back surface of the stepped portion has a shape following an inside surface of the stepped portion. |
| 主权项 |
1. A light scanning apparatus, comprising:
a light source configured to emit a light beam; a deflector including a rotary polygon mirror configured to deflect the light beam so that the light beam scans a photosensitive member, a motor configured to rotate the rotary polygon mirror, a driving unit configured to drive the motor, and a circuit board on which the motor and the driving unit are mounted; a plurality of reflecting mirrors configured to reflect the light beam deflected by the deflector to guide the light beam deflected by the deflector onto the photosensitive member; and an optical box on which the light source is mounted, the optical box being configured to contain the deflector and the plurality of reflecting mirrors, wherein the optical box includes an installation wall on which the deflector is installed and a support wall positioned on a side of the photosensitive member with respect to the rotary polygon mirror, the support wall being provided with a support portion configured to support at least one of the plurality of reflecting mirrors, a stepped portion including a plurality of steps is formed between the installation wall and the support wall, and a back surface of the stepped portion has a shape following a shape of the stepped portion inside the optical box. |
