Diffusion transfer photographic elements with polymer grafted pi

Details Diffusion transfer photographic elements with polymer grafted pi Diffusion transfer photographic elements with polymer grafted pi

1983-11-28

1985-03-19

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...

430220, 430227, 430510, 430517, G03C 554, G03C 140, G03C 184

Patent

active

045060029

ABSTRACT:
A diffusion transfer photographic element composed of a photosensitive sheet, a cover sheet, and a processing composition contained in a rupturable container in such a manner that the processing composition is spread between both sheets after exposing the photosensitive sheet is disclosed. The whiteness of highlights of images obtained is improved by incorporating a graft carbon black polymer prepared by graft polymerizing a monomer to carbon black in the photographic element, in particular, in the light-shielding layer of the photosensitive sheet.
The graft carbon black polymer prepared by graft polymerizing a monomer to carbon black can be uniformly dispersed in an aqueous medium and thus the photographic properties of a diffusion transfer photographic element can be improved using the graft carbon black polymer.

REFERENCES:
patent: 3833369 (1974-09-01), Chiklis et al.
patent: 4444866 (1984-04-01), Sakai et al.
patent: 4450222 (1984-05-01), Mattes et al.

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