Use of zinc salts to increase dye stability

Details Use of zinc salts to increase dye stability Use of zinc salts to increase dye stability

1981-01-12

1982-10-26

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

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

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

430223, 430559, 430551, 430372, 430237, G03C 554

Patent

active

043562507

ABSTRACT:
Photographic elements, diffusion transfer assemblages and processes are described which employ redox dye-releasing materials and a zinc salt, such as zinc oxide, in such a form, location and concentration that it will be diffusible in the element during processing, and the dye which is released from the redox dye-releasing material during processing will have an increased stability to light exposure. The zinc salts may be incorporated in the photosensitive portion of a photosensitive element, a processing composition or a cover sheet.

REFERENCES:
patent: 2788274 (1957-04-01), Ranger
patent: 3081167 (1963-05-01), Goulston
patent: 3196014 (1965-07-01), Rogers
patent: 3249432 (1966-05-01), Haas
patent: 3619155 (1971-11-01), Young
patent: 4273853 (1981-06-01), Ponticello et al.
Research Disclosure, Nov. 1976, pp. 75-87.
C.A. vol. 83, 1975, item 170956x.

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