Photographic product for silver transfer images with polyvinylpy

Details Photographic product for silver transfer images with polyvinylpy Photographic product for silver transfer images with polyvinylpy

1984-02-29

1984-12-18

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...

430517, G03C 184, G03C 554

Patent

active

044891520

ABSTRACT:
Diffusion transfer film units and processes are disclosed wherein a silver transfer image is formed in an image layer separated from the silver halide emulsion by a layer containing carbon black. Inclusion of polyvinylpyrrolidone in the carbon black layer provides increased silver transfer density.

REFERENCES:
patent: 2978428 (1961-04-01), Abergee
patent: 3594165 (1971-07-01), Rogers
patent: 3595652 (1971-07-01), Farney
patent: 3705804 (1972-12-01), Farney et al.
patent: 3740220 (1973-06-01), DeHaes et al.
patent: 4444866 (1984-04-01), Sakai et al.

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