Optical deflector, optical scanning apparatus, and image forming apparatus

摘要

An optical deflector including a rotary member supported by a bearing shaft and rotatively driven by a motor for deflecting a plurality of laser beams separated from each other in a rotational axis direction of the rotary member is disclosed. The optical deflector includes a polygon mirror having four sides arranged about the rotational axis direction. Each of the four sides is a continuous plane having a plurality of effective reflection areas separated from each other in the rotational axis direction.

主权项

1. An optical deflector, comprising:
a rotary member fixed on a rotation shaft to be rotated; a polygon mirror mounted on a top of the rotary member; and an engagement part formed between the rotary member and the polygon mirror to fix the polygon mirror to the rotary member, wherein the polygon mirror is fixed to the rotary member by the engagement part formed at an outer portion of the polygon mirror.