UCR

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UCR

(Under Color Removal) A method for reducing the amount of printing ink used. It substitutes black for gray color (equal amounts of cyan, magenta and yellow). Thus black ink is used instead of the three CMY inks. See GCR and dot gain.
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At the Journal, Hoffman adds, "especially with our ad material, we [already] specify undercolor removal or grey component replacement.
The new software also provides for a black printer, undercolor removal, full use of ANPA-IPTC headers, register marks and other enhancements.
It offers controls for undercolor removal, gray component replacement, dot gain adjustment and screen angles.