Under Color Removal. A color separation setting used on color photographs where cyan, magenta and yellow inks are removed from dark, neutral areas and black ink is swapped in instead. The advantages are a reduction in overall ink usage. See also GCR.
Undercolor Removal. The process of reducing color and increasing black in areas where all three colors overprint to improve trapping and reduce ink costs. This can be achieved manually in color separation films or digitally in image editing applications.
Undercolor Removal. TA prepress term describing a technique of making color separations such that the amount of cyan, magenta and yellow ink is reduced in midtone and shadow areas while the amount of black is increased.