MOTTLE

An uneven “splotchy” pattern showing up in an otherwise smooth and uniform printed area. Some types of mottle affect only screens, other kinds can also effect solids. Mottle is sometimes traced to the paper or to backtrapping or piling; but there can be causes related to blankets, water, and pressure settings. Graphic Ink Co. can help you trouble shoot mottling. See also “backtrapping“, “piling“, and “K&N absorption test“.