Methods and compositions for retouching film images

Details Methods and compositions for retouching film images Methods and compositions for retouching film images

1992-05-04

1993-11-16

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Color correcting

430431, 430432, 430461, 430463, 430462, G03C 1104, G03C 718

Patent

active

052622851

ABSTRACT:
A method for retouching a film image comprises applying an aqueous composition to the film image. The aqueous composition comprises from about 5 to about 300 g/l of an acid selected from the group consisting of sulfuric acid, hydrochloric acid, phosphoric acid, and mixtures thereof, from about 1 to about 100 g/l of at least one compound selected from the group consisting of ascorbic acid, oxalic acid, sulfite compounds, hydroxyl amine salts, iodide compounds, hypophosphite compounds, dithionite compounds, tin(II) compounds, and mixtures thereof, and a balance of water.

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Defensive Publication, T896,053, published Mar. 28, 1972.
"The Theory of the Photographioc Process" 4th ed (1977) T. H. James, ed.; MacMillen Publishing Co., pp. 363-366.

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