Optical scanning device, image forming apparatus having the same, and method therefor
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United States of America Patent
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Nov 3, 2015
Grant Date -
Mar 5, 2015
app pub date -
Aug 29, 2014
filing date -
Sep 2, 2013
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Abstract
An optical scanning device including a controller configured to control a light emitter to emit a first light beam in accordance with a first pattern, control the light emitter to emit a second light beam in accordance with a second pattern, discriminate between a first signal output from a sensor in accordance with the first pattern and a second signal output from the sensor in accordance with the second pattern, identify a first moment at which the discriminated first signal has been output and a second moment at which the discriminated second signal has been output, and determine a moment to start forming on a scanned object a first scanning line by the first light beam, based on the identified first moment, and determine a moment to start forming on the scanned object a second scanning line by the second light beam, based on the identified second moment.
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