Abstract: A controller for controlling the running tension of paper web for rotary press includes a paper feed unit (1) and a printing unit (2) provided with a printing cylinder (21) rotating according to an operation speed command. An in-feed roller (4) is provided in a running path of paper web (W) from a paper roll (11) of the paper feed unit (1) to the printing cylinder (21). A dancer roller device (5) detects a displacement amount of a dancer roller (51) relative to a reference position of the dancer roller (51) and absorbs variations of the running tension of the paper web (W) by the displacement. A tension control processing unit (S1) performs signal generation processing to optimize the peripheral speed of the in-feed roller (4) with respect to the peripheral speed of the printing cylinder (21) based on the displacement amount of the dancer roller (51) and the operation speed command.

Abstract: A controller of running tension of paper web for rotary press including a paper feed unit 1 and a printing unit 2 provided with a printing cylinder 21 rotating according to an operation speed command, having an in-feed roller 4 provided in a running path of paper web W from a paper roll 11 of the paper feed unit 1 to the printing cylinder 21, a dancer roller device 5 for detecting a displacement amount of a dancer roller 51 relative to a reference position of the dancer roller 51 and absorbing variations of running tension of the paper web W by the displacement, and a tension control processing unit S1 for performing signal generation processing to optimize the peripheral speed of the in-feed roller 4 with respect to the peripheral speed of the printing cylinder 21 based on the displacement amount of the dancer roller 51 and the operation speed command.