G - Physics – 03 – G
Patent
G - Physics
03
G
96/70
G03G 9/12 (2006.01) G03F 7/30 (2006.01) G03F 7/32 (2006.01) G03G 13/10 (2006.01)
Patent
CA 2019632
Abstract Method of processing presensitized lithographic printing plate Disclosed is a method of processing a presensitized lithographic printing plate by the use of an automatic processor, comprising processing a negative working presensitized lithographic printing plate containing a diazo compound and a positive working presensitized lithographic printing plate containing an o-quinonediazide compound, with a developer solution capable of processing the negative working presensitized lithographic printing plate and the positive working presensitized lithographic printing plate in common, repeatedly used under supply of a developer replenishing solution, wherein; the developer solution and the developer replenishing solution each contain an alkali silicate, a surface active agent, an organic solvent and a reducing agent; the developer replenishing solution is a single liquid; the developer replenishing solution contains the surface active agent in an amount ranging from 0.05 to 15 % by weight; and the developer replenishing solution is different from the developer solution in the concentration of at least one of the alkali silicate, the surface active agent, the organic solvent and the reducing agent.
Nogami Akira
Shimura Kazuhiro
Uehara Masafumi
Watanabe Sinya
Konica Corporation
Nogami Akira
Shimura Kazuhiro
Swabey Ogilvy Renault
Uehara Masafumi
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