| 摘要 |
PROBLEM TO BE SOLVED: To carry sheets effectively by enabling the quick treatment of a jam through jam prediction in advance. SOLUTION: The passing time of a recording sheet of paper S is measured by a signal given by pre-registration sensor 41 and a timer. The measured time is compared with the specified time. A failure judgement is passed when the passing time for the pre-registration sensor 41 differs from the specified time, and an output signal is given to a video controller. The video controller receives the signal and supplies the information about failure to an appropriate information means (for example, display, alarm, etc.), to inform the operator, etc., that there is likelihood of a jam, etc. |
