| 摘要 |
PROBLEM TO BE SOLVED: To quickly and smoothly absorb the variation of tension of the continuous form paper fed from a paper feed part to a printing part to stabilize the tension. SOLUTION: This rotary press provided with the paper feed part 1, and the printing part 2 provided with a printing cylinder 21 rotated corresponding to the operating speed command, comprises an in-feed roller 4 mounted in a traveling passage of the continuous forms paper W from the rolled paper 11 of the paper feed part 1 to the printing cylinder 21, a dancer roller device 5 detecting the displacement of a dancer roller 51 with respect to a reference position, and absorbing the variation of the traveling tension of the continuous forms paper W caused by the displacement, and a tension control processing part S1 for generating a signal for optimizing a peripheral speed of the in-feed roller to a peripheral speed of the printing cylinder 21 on the basis of the displacement of the dancer roller 51 and the operating speed command.
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