Device and method for positioning a cross cut on printing material and web-fed press having the device

摘要

A device for positioning a cross cut relative to printed images on at least one printing material web in a web-fed press having at least one printing unit, includes a cross cutter. Also included is a computing device for generating therein at least a first control signal for changing a phase angle of the printing unit and the cross cutter relative to one another. A path length variation device for changing a path. length through which. the printing material web runs between the printing unit and the cross cutter is also included. The computing device further serves for generating a second control signal for changing the path length and, by interaction. of the change in the relative phase angle and the change in the path length, serves for adjusting the positioning of a cross cut on the printing material web. A web-fed printing press includes the cross-cut positioning device. A method for operating the device is also provided.