Lithographic printing plate materials with light insensitive sil

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, 430230, G03C 554

Patent

active

047725354

ABSTRACT:
Printing characteristics of a lithographic printing plate material using the silver complex diffusion transfer process and comprising a support and a silver halide emulsion layer and a surface physical development nuclei layer are markedly improved when the emulsion layer comprises two emulsion layers, the lower layer of which has substantially no light-sensitivity.

REFERENCES:
patent: 4247617 (1981-01-01), Debroyn et al.
patent: 4299908 (1981-11-01), Ito et al.
patent: 4693955 (1987-09-01), Torizuka et al.
patent: 4728596 (1988-03-01), Takaki et al.

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