Optical scanning device, and image forming apparatus equipped with the same
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United States of America Patent
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May 22, 2018
Issued Date -
N/A
app pub date -
Jun 30, 2016
filing date -
Jan 30, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An optical scanner includes a polygonal mirror; a mirror for reflecting the beam from the polygonal mirror; an optical box having a cap and containing the mirror; a first mirror regulating portion in a direction of a normal line of the mirror, the first regulating portion being provided opposed to such a surface of the reflecting surface and a back surface as is closer to the cap; and a second mirror regulating portion in a beam sub-scanning direction, the second regulating portion being provided opposed to such a surface of the mirror as is closer to the cap; wherein the mirror has a plurality of apex lines, and the first regulating portion and the second regulating portion are disposed at positions which are remoter from the cap than the apex line that is closest to the cap, with respect to a direction perpendicular to a main scan direction.
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