Arrangement for controlling web tension of e.g. paper web transported by ink printing device for multi-color printing of print material, has motors driving rollers so that web tension corresponds to web tension-reference value at inlet

摘要

The arrangement has drive units (AA1-AA4) producing a correction value for a rotational speed-reference value from the rotational speed-reference value, a web tension-reference value and a web tension-actual value. The rotational speed-reference value is changed around the correction value to a corrected rotational speed-reference value for drive rollers (AT1-AT4). The corrected rotational speed-reference value is applied to drive motors (M1-M3), which drive the rollers so that a web tension corresponds to the web tension-reference value at an inlet of a reprint zone (UZ2).