Patent ID: 7559279
Filing Date: 2009-07-14
Classification: B41F,B65H

Abstract:
1. A method for controlling the cut register in a web fed press through which a plurality of webs are fed, the press having a printing unit, a common knife cylinder which cuts the webs, and a plurality of clamping points between the printing unit and the knife cylinder, wherein said printing unit prints each web with a printed image and one of image information and measuring marks suitable for the deviation of the position of the printed image with respect to its intended position based on the time and position of cutting at the knife cylinder, said deviation constituting the cut register error, the method comprising: measuring said one of image information and measuring marks from at least one said web at least one of before and on the knife cylinder by at least one sensor; forming an actual value for controlling the cut register error of the at least one said web by at least one of evaluating and transforming said one of image information and measuring marks measured by the at least one sensor; and correcting the cut register error of the at least one web to a predefined set point by changing at least one of a speed of at least one clamping point and the position of the knife cylinder in accordance with the actual value, said step of correcting comprising: