Lithographic printing plate with polyacrylamide polymer in physi

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...

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430229, 430232, 430227, G03C 554, G03F 706

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active

052368025

ABSTRACT:
The present invention provides a lithographic printing plate material utilizing silver complex diffusion transfer process which can provide a lithographic printing plate markedly improved in water retentivity and prevented from deterioration of printability after storage. The lithographic printing plate material comprises a support and at least a silver halide emulsion layer and a physical development nuclei layer, wherein at least one of the physical development nuclei layer and a layer contiguous to the nuclei layer contains at least one water-soluble synthetic polymer selected from those which are represented by the following formulas: ##STR1## wherein R.sub.1 represents H or an alkyl group and n represents 100-3500 and ##STR2## wherein R.sub.2 represents H or an alkyl group, R.sub.3 represents H or an alkali metal, the ratio of n:m is 10:0-1:9, and polymerization degree is 100-3500.

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