Getting the Most Out of Coated and Uncoated Papers

Drying Time

Uncoated paper typically needs more drying time than coated paper. Oxidizing ink or the use of drying stimulators in the standard ink can be used as an alternative.—Andrea Alstad, Wausau Paper

Sheetfed inks dry by absorption and oxidation. Ink drying can be influenced by a combination of variables on press: ink strength, ink emulsification characteristics, fountain solution pH, the ink/water balance, the temperature of the fountain solution and the ambient air, the RH of the press room, the paper capillary action or hold out, the delivery pile height, the amount and size of the spray starch, the temperature of the delivery pile, the coverage of the form, etc. It is the compatibility of these variables that will better your chances at producing a high-quality job.—Brian Fenner, NewPage