Patent ID: 6766737
Filing Date: 2004-07-27
Classification: B41F,B65H

Abstract:
A method for regulating a circumferential register in a web-fed rotary printing press, including:providing at least first and second print units arranged sequentially in the printing press in a production direction, said at least first and second print units each including at least one forme cylinder and at least one transfer cylinder; providing a web to be printed and traveling in a web travel direction sequentially through said at least first and second print units; measuring an actual value of a tension in said web at a location after, in said web travel direction, a last, in said production direction, print unit in said printing press; providing means for regulating at least one of a cylinder angular position and an angular speed of at least one of said at least one forme cylinder and said at least one transfer cylinder of said first print unit with respect to at least one of an angular position and an angular speed of at least one of said at least one forme cylinder and said at least one transfer cylinder of said second print unit; and using said actual value of said tension for regulating at least one of said angular position and an angular speed of at least one of said at least one forme cylinder and said at least one transfer cylinder of said first print unit for correcting the tension in said web.