| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem of securing an installing space for a detecting means for detecting a separate failure when a device is down-sized and made compact and especially to solve the difficulty in providing the detecting means for this document claim in a vicinity of the separate position since influence of heat from a fixing means cannot be prevented. <P>SOLUTION: A separate failure is detected by an indirect detection using predictive control method and exceptional sticking of recording material to an image carrier is detected at a position away from a separate position. <P>COPYRIGHT: (C)2003,JPO |
