Patent ID: 9692926
Date: 2017-06-27
CPC Classifications: G02B,G03G,H04N

Claim:
1. An optical scanning apparatus comprising: a light source configured to emit a light beam; a rotary polygon mirror configured to deflects the light beam emitted from the light source such that a photoconductor is scanned with the light beam; an optical member configured to guide the light beam deflected by the rotary polygon mirror to the photoconductor; a housing configured to accommodates the rotary polygon mirror and the optical member therein; a cover member attached to the housing so as to cover the housing, an opening being formed in the cover member, the opening passing the light beam from inside of the housing to outside of the housing, an elastic member being molded on the cover member in such a way as to enclose the opening and protrude from a fluid passage, the elastic member being made of a material that is different from a material of the cover member, the elastic member being more elastic than the cover member, the fluid passage being formed in the cover member in such a way as to enclose the opening, a molten material of the elastic member being poured into the fluid passage so as to mold the elastic member in the cover member in such a way as to enclose the opening; and a transparent member for covering the opening, wherein the elastic member elastically deforms due to contact of a protruding portion of the elastic member protruding from the fluid passage with the transparent member, and the deformed elastic member seals a gap between the cover member and the transparent member.