Method for calculating the parameters for the pre-inking of a printing unit of an offset printing press with a spot colour

Abstract

The present invention relates to a method for calculating the parameters for the pre-inking of a printing unit of an offset printing press with a spot colour comprising the following steps: a) predetermining a printing unit, a spot colour, a substrate to be printed with the spot colour and a specific ink coverage necessary to achieve predetermined colour coordinates of the spot colour to be achieved on the substrate, b) determining the number of vibrator roller contacts to the ink duct roller being necessary to obtain, by printing the predetermined spot colour with the predetermined printing unit onto the predetermined substrate, the specific ink coverage having been predetermined in step a) from at least two different reference spot colours, wherein each of the at least two different reference spot colours has been printed with the printing unit having been predetermined in step a) onto the substrate having been predetermined in step a) with a different predetermined specific ink coverage.

Dependencies are inferred from the claim text.