Image forming apparatus
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United States of America Patent
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Nov 13, 2018
Grant Date -
Jan 18, 2018
app pub date -
Jul 11, 2017
filing date -
Jul 13, 2016
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Abstract
Surface identification processing is performed using a period of a BD signal when an amount of light incident on a BD sensor reaches an amount equal to or more than a threshold value, and the surface identification processing is not performed using the period of the BD signal in a state where the amount of light incident on the BD sensor is less than the threshold value. Thus, malfunction of the image forming apparatus due to failure of the surface identification processing is suppressed.
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