Patent ID: 8390882

Claim:
A method for adjusting the color of a coated print comprising: measuring the reflectance spectra of an uncoated print with a spectral measuring device to obtain an uncoated reflectance spectra measurement; estimating, using a processor, the reflectance spectra of the print when coated by a coating process based on the uncoated reflectance spectra measurement using a correlating function; determining, using the processor, differences between the estimated reflectance spectra of the coated print and reference reflectance spectra, wherein the reference reflectance spectra correspond to a desired color of an output image; and adjusting, using the processor, at least one parameter of a printing process based on the determined differences in reflectance spectra so as to achieve the desired color of the output image, wherein the correlating function is a multi-dimensional transformation in spectral space and the correlating function is a function of reflectance spectra of a plurality of color patches before and after the coating process, and wherein the reflectance spectra of the plurality of color patches before and after the coating process are measured at a range of wavelengths.