Image forming apparatus and detecting method of pattern image regarding image quality adjustment
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United States of America Patent
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Jun 4, 2013
Grant Date -
Mar 3, 2011
app pub date -
Aug 9, 2010
filing date -
Aug 27, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes: an obtaining unit that radiates light from a light-emitting unit onto the image carrier and that obtains an output value of a light-receiving unit having received the light reflected from the image carrier; a light amount setting unit that calculates a required light amount value and that sets a light amount adjusting value; a detecting unit that detects a pattern image on the image carrier and by judging whether an output value obtained by radiating light of the light amount adjusting value exceeds a predetermined threshold; and a controller that controls image formation on the image carrier based on a detected result, wherein the detecting unit reduces the threshold when the required light amount value exceeds the limiting value depending on degree of the excess.
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