Definitions for "Ink Holdout"
When a particular paperstock prevents ink from absorbing. Better holdout translates to sharper reproduction.
The degree to which a paper surface resists penetration of ink. An inked image printed on paper with a high degree of ink holdout will dry by oxidation rather than absorption. Higher ink holdout means higher print gloss. Strong ink holdout results in a sharp, bright image.
Resistance to the penetration of ink. Coated papers tend to have good ink holdout. The ink pigments sit on the surface of the coating, and are not absorbed into the spaces between the paper fibers. This minimizes dot spread and results in a sharp image. Uncoated papers tend to absorb ink into the sheet, but printers can compensate for this and still produce a very bright, sharp image on uncoated paper.