| 摘要 |
PURPOSE:To remove sagging of paper automatically by providing means for controlling the speed of motor according to the content of a speed correcting means and a draw setting means. CONSTITUTION:An incremental or decremental draw value is set by a draw setter 10 and provided to a speed reference generating circuit 9 for the entire line in order to determine the speed reference (v) for a section. The speed reference (v) is provided to a speed controller 11 and compared with a speed FB signal, provided from the speed detector 12 for a motor 7, in order to control the speed of the motor 7. When paper feed operation is started under this state, a paper 1 passes through a coater section 17 and held by rolls 5, 6. At this time, a signal is provided from a paper detector 13 to a speed correction generating circuit 14 which then provides a speed correction signal vo to the speed control circuit 11. Consequently, the speed of the motor 7 increases to remove sagging between the coater section 17 and the sections in front and rear thereof gradually. |
