We discuss the relation between the color of a Xerographic image and the color of the individual toners (or pigments and binder) making up the image. We analyze the dielectric constant of the composite image in terms of those of the constituent colored toners via the use of static effective medium theories (EMTs). One application of EMT is to predict the color of toner as a function of varying pigment loading. Another application is to predict the color of an image as a function of amount of cyan, magenta, yellow, and black toner, i.e., color mixing laws. We show that different color mixing laws result for different pigment microgeometries in the color image. Variational bounds are able to limit the range of average image color obtainable for fixed amounts of color toners.
Robert J. Meyer, "Statistical Optics and Effective Medium Theories of Color" in Proc. IS&T 1st Color and Imaging Conf., 1993, pp 85 - 88, https://doi.org/10.2352/CIC.1993.1.1.art00020