Use of oxalic acid or an acid salt thereof in color transfer ass

Details Use of oxalic acid or an acid salt thereof in color transfer ass Use of oxalic acid or an acid salt thereof in color transfer ass

1981-06-29

1982-10-12

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...

428411, 428500, 428507, 428515, 428520, 428522, 428532, 430212, 430215, 430223, 430218, 430236, 430237, 430454, 430505, 430523, 430531, 430536, 524321, G03C 140, G03C 554, G03C 700, G03C 524

Patent

active

043539734

ABSTRACT:
Photographic assemblages, elements, receiving elements and cover sheets are described employing a neutralizing layer comprising about 75 to about 150 meq. of acid/m.sup.2 of element for neutralizing an alkaline processing composition. The neutralizing layer, timing layer or layer adjacent thereto also contains about 1 to about 10 meq./m.sup.2 of oxalic acid, or an acid salt thereof, to minimize sensitometric changes that occur with keeping.

REFERENCES:
patent: 2635048 (1953-04-01), Land
Research Disclosure, vol. 123, Jul. 1974, Item 12331.

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