This document describes four methods for the adjustment of the digital content data that is input to a printing system to achieve consistency in the printed results among a number of presses printing to the same general aim conditions. These four methods are generally identified as:


1)       matching of tone value curves (TVI and CTV),


2)       use of near-neutral scales,


3)       colour-optimised correction curve set, and


4)       use of CMYK to CMYK multi-dimensional transforms.


The procedures for establishing the aim condition for the necessary correction curves, the procedures for determining the individual correction cu...