Crystallization

A printing defect symptomatic of poor trapping, the ability to print one ink on top of another previously-printed dry ink, in which the dry ink film—which has been allowed to dry too hard—repels the wet ink, causing crawling, mottle, or rub-off. Crystallization occurs with inks that dry by oxidation and when the second ink is printed at a much later time than the first ink. Crystallization can commonly be avoided by reducing the amount of drier in the ink. (See Trapping.) As used in printing terminology, crystallization has nothing to do with the chemical term crystallization, which describes an entirely different phenomenon.

All text and images are licensed under a Creative Commons License
permitting sharing and adaptation with attribution. (See Copyrights for details.)

PrintWiki – the Free Encyclopedia of Print
About    Hosted by WhatTheyThink