On-press developable lithographic printing plate precursor

Details On-press developable lithographic printing plate precursor On-press developable lithographic printing plate precursor

1995-06-06

1997-04-15

Lesmes, George F.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430302, 4302731, G03C 172

Patent

active

056208278

ABSTRACT:
A lithographic printing plate precursor for use on a printing press, with minimal or no additional processing after exposure to actinic radiation, comprises a printing plate substrate, a polymeric resist layer capable of imagewise photodegradation or photohardening, and a plurality of microencapsulated developers capable of blanket-wise promoting the washing out of either exposed or unexposed areas of the polymeric resist. The microencapsulated developers may be integrated into the polymeric resist layer, or may form a separate layer deposited atop the polymeric resist layer, or may be coated onto a separate sheet support capable of being brought into face-to-face contact with conventional printing plates.

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