Tension controller for controlling tension of running paper web

摘要: A tension controller for controlling the of running paper web. When a rotary press starts to operate and performs minimum speed operation, balances web between floating roller dancer roller, thereby easily bringing central position its swing stroke. Also, deactivates positioning mechanism in accordance with an acceleration signal before impression on starting printing is issued, smoothly initiating control from beginning printing. Further, displacement range divided into plurality regions. Based values detected by three detection sensors namely direction sensor, controls driving time infeed drive transmission regulation unit. Through smooth, stable performed printing, minimizes variations, shortens required until stabilized, reduces calculation errors, providing high-accuracy control.