Patent ID: 6660454
Filing Date: 2003-12-09
Classification: B41N,G03F

Abstract:
A method for processing an imagewise exposed lithographic printing plate, the method comprising, in order, the steps of:(i) applying a developer to the exposed plate; and (ii) rinsing the plate with rinse water; in which the rinse water comprises: (a) at least one water-soluble film-forming polymer; (b) at least one compound selected from the group consisting of phosphoric acid derivatives of formula I in which X is C2-C6 alkylene or in which: k is 0 or 1; m is 1, 2, or 3; p is 1, 2, or 3; r is an integer from 10-20; R1 and R3 are each independently H or C1-C4 alkyl; R2 and R4 are each independently H, OH, or C1-C4 alkoxy; and Y is â€”R6Nâ€”(CH2)nâ€”(NR5)qâ€”, in which q is 0 or 1, n is an integer from 0 to 8 and R5 and R6 are each independently H, C1-C4 alkyl, or â€”CH2â€”P(O)(OH)2.