Imaging element for making a lithographic printing plate accordi

Details Imaging element for making a lithographic printing plate accordi Imaging element for making a lithographic printing plate accordi

1995-06-06

1996-04-30

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...

430229, 430230, 430622, G03C 130, G03C 806, G03F 707

Patent

active

055124135

ABSTRACT:
The present invention provides an imaging element comprising on the same side of a support in the order given a base layer, a light sensitive layer containing a silver halide emulsion and a surface layer comprising physical development nuclei characterized in that said base layer and/or said light-sensitive layer comprises gelatin being hardened with a divinylsulfonyl hardener such that the time needed to completely brake down said base layer, light sensitive layer and surface layer using an aqueous solution of 0.14% by weight of NaOCl at 25.degree. C. is between 1000s and 1600s. A lithographic printing plate can be obtained with such imaging element according to the silver salt diffusion transfer process and exhibits an improved printing endurance.

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patent: 5340691 (1994-08-01), Vaes et al.
patent: 5368980 (1994-11-01), Davies

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