Colorimetric Investigations in Multicolor Printing.

In the development of color-correction methods for multicolor printing, it is important to have an understanding of the relationship between the colors of the individual printing inks and their combination in the form of superimposed halftone dot patterns. Two sets of equations have been proposed. It is shown that both equations lead to rather similar results, but neither of them fits the observed facts perfectly, this being partly due to the optical characteristics of the paper. By suitable modifications, either set of equations may be made to correspond more closely to the actual behavior of the inks.