| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that defective cleaning or filming may be generated in an intermediate transfer body. <P>SOLUTION: In accordance with the use state or use history of the image forming apparatus, optical sensors to be used for toner adhesion quantity detection of toner adhesion patterns of respective colors and the arrangement of the toner adhesion patterns of respective colors can be switched to arrangements A, B, C, the image formation order of the toner adhesion patterns of respective colors can be switched by the arrangements A, B, C, and when frequency for switching the arrangement of the optical sensors and the toner adhesion patterns of respective colors to the arrangement B or C is a prescribed value and more, the optical sensors to be used and the preparation positions of the toner adhesion patterns are switched at a prescribed toner adhesion pattern detection execution interval. <P>COPYRIGHT: (C)2007,JPO&INPIT |
