Optical scanning device and method for operating the same and image forming apparatus

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United States of America Patent

PATENT NO 9001175
APP PUB NO 20140078563A1
SERIAL NO

14022331

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Abstract

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An optical scanning device comprising: a light source that emits a laser beam; and a driving unit connected to the light source and configured to drive the light source; the driving unit comprising: a first storage unit that stores in advance therein a setting value for controlling output of the laser beam; a second storage unit that stores temporally therein the setting value stored in the first storage unit; a storage controller connected to the first storage unit and the second storage unit; and a voltage detector connected to the storage controller and configured to detect a voltage value supplied to the driving unit, wherein the storage controller, upon the voltage detector detecting that the voltage supply is resumed, transfers the setting value stored in the first storage unit to the second storage unit automatically.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LIMITED3-6 NAKAMAGOME 1-CHOME OHTA-KU TOKYO 143-8555

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Izawa, Yasuhiro Hyogo, JP 29 207
Kobayashi, Shinji Tokyo, JP 224 1739
Watanabe, Takao Kanagawa, JP 209 3423

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