| 摘要 |
<p>PURPOSE:To prevent the inferior control at the time when any irregular value is detected, and prevent the occurrence of jam or the like, by providing a means for rememorizing the last measured value instead of the irregular value when a time difference detected between sensors provided on each terminal end of a paper feed path and a carrying path is in a proper range. CONSTITUTION:Time TM1 from the restarting time of a feed motor 4 to the reaching time of a copying paper at a sensor 15 in front of a regist is measured and memorized, and the restarting time of the third paper feeding is set at the time when it is Td later than S,OPC instead of Tb when a linear velocity B is constant. Said Td is expressed by Td=TR-[TM1+(l5+lB)/B], where TR is the time from detection of the signal to start of a regist motor 11, l5 is the distance from the sensor 15 to a regist roller 10, lB is the required paper deflection amount in front of the regist, and B is the linear velocity of the paper. And, TMn is compared with TM(n-1) when Td is calculated with said equation, and if the difference between them is more than a fixed value Ts, TMn is not adopted as the measured value, the last measured value TM(n-1) is adopted instead, so that the inferior control can be prevented.</p> |
