Process for producing pre-press color proofs

Abstract From the Canadian patent

A process is disclosed for preparing a pre-press proof of an original subject having highlight, midtone and shadow tone areas using a color print paper wherein the dyes of the print paper are brought into substantial color compliance with the yellow, cyan and magenta process inks to be used in producing a lithographic reproduction of the original subject. The tonal range of the proof image is also extended to closely match that of the final printed product. After determining the densitometer readings for yellow, magenta and cyan through blue green and red filters respectively for the print paper and the process inks, the print paper is exposed to light through each filter with an …