Abstract: A seven color separation process is provided in which, as well as the conventional Cyan, Magenta, Yellow and Black (CMYK) separations traditionally used in the four color printing process, additional Red, Green and Blue (RGB) separations are produced on a conventional scanner. The additional separations are produced using the Cyan, Magenta and Yellow channels of the scanner to measure Red, Green and Blue absorption characteristics of the source and to compensate the measured densities such that the separations represent a range of print densities from 0.0 D to 2.0 D corresponding to densities in the source in the range 1.0 D to 3.0 D. The transfer duration is also compensated for the compression which takes place in the preparation of the CMYK separations.