Patent ID: 9086645
Filing Date: 2015-07-21
Classification: G02B,G03G

Abstract:
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 support portion positioned on a side of the photosensitive member with respect to the rotary polygon mirror and configured to support at least one of the plurality of reflecting mirrors, a step portion including a plurality of steps is formed between the installation portion and the support portion, and a back surface of the step portion has a shape following a shape of the step portion inside the optical box.