Patent ID: 6253678
Filing Date: 2001-07-03
Classification: B41F

Abstract:
A method of printing using a press having first and second printing units and responsive to electronic data wherein the electronic data include a first set of data representing a first image component to be printed by the first printing unit and a second set of data representing a second image component to be printed by the second printing unit after the first image component is printed, the method comprising the steps of:running the press to cause the first and second printing units to produce the first and second printed components, respectively, on a substrate;stopping the press;inspecting the first and second printed components to determine a degree of misregistration of the first printed component relative to the second printed component caused by growth of the substrate;modifying the first set of data in dependence upon the degree of misregistration while leaving the second set of data unmodified; andsubsequently operating the press in accordance with the modified first set of data and the unmodified second set of data to print the image with a reduced degree of misregistration.