| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of acquiring a specified peak position even when an image carrier is deteriorated or the glossiness is eliminated, and highly precisely correcting color shift. SOLUTION: The image forming apparatus includes: a light emitting device 31 that emits detection light toward an intermediate transfer belt 22 on which a color misregistration correction detection pattern; a light-reception-side polarization separation element 34 that separates the detection light reflected by the intermediate transfer belt 22 into a regular-reflected component and a diffused-reflected component; a first photodetector 35 that receives the regular-reflected component of the detection light separated by the element 34; a second photodetector 36 that receives the diffused-reflected component of the detection light separated by the element 34; and a control circuit 45 that controls a reference voltage for determining the current for the light emitting device 31, then, corrects the light emission amount and controls the level of the diffused-reflected component of the detection light, from a detection lower limit value to the detection upper limit value. COPYRIGHT: (C)2010,JPO&INPIT
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