INDUSTRY STANDARDS — FOR THE COMMON GOOD

GRACoL 7/G7 eliminates the TVI problem entirely by replacing the ISO standard’s multiple TVI curves with the new concept of a single neutral print density curve. NPDC is described as a new concept based on the relationship between measured neutral density and original halftone percentages on a printed gray scale. “Because neutral density is an absolute value, while TVI is a relative function, NPDC ensures a better contrast and density match between ­multiple devices,” explains the how-to guide.