Method for printing employing lithographic fountain dampening solution
AssigneeHoward A. Fromson
InventorsHoward A. Fromson, Robert F. Gracia
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Abstract
Method for lithographic printing wherein a lithographic printing plate having oleophilic and hydrophilic areas on the printing surface of the plate is contacted with ink and an aqueous fountain solution during printing. An aqueous solution comprising an enzyme is used as the fountain solution.
Claims5
In a method for lithographic printing wherein a lithographic printing plate having oleophilic and hydrophilic areas on the printing surface of the plate is contacted with ink and an aqueous fountain dampening solution during printing, the improvement comprising, as said fountain solution an aqueous solution containing a water-soluble hydrolase enzyme dissolved therein to improve printing quality and reduce the amount of fountain solution necessary to dampen the plate.
Method of claim wherein the fountain dampening solution contains 0.05 to 5 weight percent of said enzyme.
Dependencies are inferred from the claim text.