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The degree in which a paper is able to hold ink consistently on the surface, preventing excessive absorption of the ink. A paper with a high holdout level results in a sharper, more clearly defined dot and produces higher ink gloss. When ink is absorbed into paper, it spreads, creating a phenomenon referred to as dot gain. A coated glossy paper stock has a low ink absorption rate and therefore has a high holdout, while a high absorption paper such as newsprint has low holdout. High holdout ability can also create potential problems. Ink can rub off the printed sheet because of the low absorption rate of the paper and the ink can smear onto other printed documents. Overprint varnishes, aqueous coatings, or UV coatings may be applied to applications printed on paper with a low absorption rate in order to prevent potential problems associated with high holdout.
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