Scanning optical device and image forming apparatus with bearing surfaces and regulating portions constructed to reduce laser deviation of a reflection mirror

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United States of America Patent

PATENT NO 11949825
APP PUB NO 20220377198A1
SERIAL NO

17746819

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A scanning optical device includes a deflector, a reflecting mirror, a housing to accommodate the deflector and the mirror; and an elastic member to urge the mirror toward the housing. The mirror includes a first surface urged by the elastic member, a second surface opposite to the first surface, a third surface and a fourth surface perpendicular to the first and second surfaces. The housing includes a bearing surface to support the second surface and a regulating portion to regulate movement of the mirror to a mirror widthwise direction, perpendicular to a mirror longitudinal direction and parallel with the second surface, and toward an opening of the housing. The regulating portion is provided opposite to only a part of the third surface so that a ridge line of the mirror between the second surface and the third surface does not contact the regulating member even an attitude of the mirror changes in a direction away from the bearing surface.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHA30-2 SHIMOMARUKO 3-CHOME OHTA-KU TOKYO 1468501 ?1468501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Katayama, Hiroki Shizuoka, JP 49 352
Murotani, Taku Shizuoka, JP 10 13
Obara, Mitsuhiro Shizuoka, JP 19 62

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