Imaging element and method for making lithographic printing plat

Details Imaging element and method for making lithographic printing plat Imaging element and method for making lithographic printing plat

1995-03-22

1996-03-05

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430227, 430232, 430248, G03G 852, G03G 828, G03F 707

Patent

active

054966795

ABSTRACT:
The present invention provides an imaging element comprising on a flexible hydrophobic support (i) a hardened hydrophilic layer, containing a hydrophilic synthetic homocopolymer or copolymer and being hardened with a hydrolyzed tetraalkyl orthosilicate crosslinking agent, (ii) a receiving layer containing physical development nuclei contiguous to said hydrophilic layer, (iii) an intermediate layer comprising a non-proteinic hydrophilic film-forming polymer or hydrophobic polymer beads having an average diameter not lower than 0.2 .mu.m and having been prepared by polymerization of a ethylenically unsaturated monomer and (iv) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said receiving layer. The invention also relates to a method for making lithographic plates with said imaging element.

REFERENCES:
patent: 3706568 (1972-12-01), Haefner
patent: 3971660 (1976-07-01), Staehle
patent: 4330605 (1982-05-01), Boston
patent: 4429032 (1984-01-01), Matthe et al.
patent: 5194347 (1993-03-01), Vermeulen et al.
patent: 5196290 (1993-03-01), Coppens et al.
patent: 5283156 (1994-02-01), Monbaliu et al.

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