Conversion solutions for lithographic printing plates

Details Conversion solutions for lithographic printing plates Conversion solutions for lithographic printing plates

G - Physics

03

F

96/2, 96/71

G03F 7/32 (2006.01) B41N 3/08 (2006.01) G03F 7/26 (2006.01) G03G 13/28 (2006.01)

Patent

CA 2017638

ABSTRACT OF THE DISCLOSURE A cyanide-free desensitizing or conversion solution for converting imaged electrophotographic masters to lithographic printing plates comprising: (a) from about 1.0 to about 3.0 percent of phytic acid; (b) from about 0.5 to about 2 percent of a water-soluble anionic polymer; (c) from about 1.0 to about 3.0 percent of a water-soluble dibasic acid; and (d) an aqueous carrier; all percentages being based upon the total weight of the solution, the pH of said solution ranging from about 3.5 to about 6Ø A method of using this solution to convert imaged masters is also disclosed.

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