Patent ID: 9720207
Date: 2017-08-01
CPC Classifications: G02B,G03G

Claim:
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 portion on which the deflector is installed and a stepped portion including a plurality of steps disposed between the installation portion and a side wall of the optical box, wherein the plurality of steps include a farther step and a nearer step of which the farther step is farther from the installation portion than the nearer step, and wherein a height of the farther step is higher than a height of the nearer step.