Kubelka-Munk Theory and the Yule-Nielsen Effect on Halftones

摘要

This report experimentally relates the Yule-Nielsen n parameter for optical dot gain to the scattering and absorption parameters, S and K, of Kubelka-Munk theory. The relationship between the parameters is made through another metric of light scatter, k_p, defined as the inverse of the frequency, #omega# in cy/mm, at which the MTF of the paper equals 1/2. The value of n is related exponentially to k_p, as shown in earlier work, and the current work indicates that k_p = c/S, where c is a constant equal approximately to 10. However, contrary to some intuition and to previous theoretical projections, the absorption coefficient of the paper, K, has no significant influence on k_p or the MTF of paper.