Colorant Selection for Six-Color Lithographic Printing.

摘要: Two criteria for selecting ink sets six-color lithographic printing are discussed. The first is the volume, in CIELAB space, of an approximation gamut. second number pixels within a digital image (or images) whose colors contained approximate In order to obtain balance between accuracy and efficiency, different steps process prioritized according their impact on accuracy, requirements specialized measurements, computational load they create. Factors which have first-order measured, while factors with higher-order, less controlling, computed or estimated. Overprints two more colorants estimated using spectral model, rather than measured from printed samples. Combinations inks gamut surface contain intermediate amounts spectrally-sharpened wideband model. estimation performed space subtractive behave linearly density. A convex hull constructed linear Computer Graphics routines. Through repeated bisection, sampled space. coordinates vertices then transformed into color display, comparison, analysis.