Patent ID: 8100057
Filing Date: 2012-01-24
Classification: B41F,G01J,Y10S

Abstract:
1. A method for regulating the ink in a printing press including: printing a print substrate continuously in an ongoing printing process of the printing press; applying at least one ink, using a specific inking unit, to the print substrate in multiple inking zones; determining a first measured value indicating a first ink density of the at least one ink applied to the print substrate in said printing process in the printing press in a first inking zone; determining a second measured value indicating a second ink density of the at least one ink applied to the print substrate in said printing process in the printing press in a second inking zone; forming a relation between the first measured ink density value for the specific ink determined in the first inking zone and the second measured ink density value for the same specific ink determined in the second inking zone; determining the relation between the first and second measured ink density values determined in the first and second inking zones in the ongoing printing process by one of determining a difference in the ink optical density values between the first and second inking zones, and placing the measured ink density value for the first inking zone in a ratio with the measured ink density value for the second inking zone belonging to the same specific inking unit; forming the relation between the measured ink density values in the first and second inking zones only when, during a startup phase of the printing press, the majority of the multiple inking zones of the specific inking unit of the printing press are each supplying a measured ink density value for an ink supplied by said special inking unit, which measured ink density value reaches at least a predefined fraction of a predefined set value in each respective inking zone; providing an ink regulation control device; and activating the ink regulation carried out by the control device only after the condition that the measured ink density value for an ink supplied by said specific inking unit reaches the at least predefined fraction of the predefined set value in the respective inking zone, at the end of the startup phase of the printing press, has been met.