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

1996-06-03

1997-03-18

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, 430259, G03C 806, G03C 850, G03C 1805, G03F 707

Patent

active

056121660

ABSTRACT:
The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) an intermediate layer between said image receiving layer and said photosensitive layer, characterized in that said intermediate layer comprises particles of an alkali insoluble non-polymeric organic compound having a melting point of at least 50.degree. C, said particles having a number average size between 0.1 .mu.m and 10 .mu.m.
According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process by using said imaging element+.

REFERENCES:
patent: 5068165 (1991-11-01), Coppens et al.
patent: 5273858 (1993-12-01), Coppens et al.
patent: 5496679 (1996-03-01), Hauguier et al.

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