Optical scanning device having rotating polygon mirror, and image forming apparatus including the same
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United States of America Patent
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Jul 12, 2022
Grant Date -
Mar 18, 2021
app pub date -
Sep 9, 2020
filing date -
Sep 13, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
In an optical scanning device, an outer wall closest to a circumscribed circle of a rotating polygon mirror has a space in a position facing to a position of a reflection surface of the rotating polygon mirror in an axial direction of a rotating shaft. A part of a cover is provided in a position farther from the circumscribed circle than the outer wall so as to close the space, when the optical scanning device is viewed in a direction perpendicular to the axial direction of the rotating shaft.
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