Dye toning system

Details Dye toning system Dye toning system

1976-10-29

1978-11-07

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

96 51, 96 60R, 96 60BF, G03C 700, G03C 532

Patent

active

041243900

ABSTRACT:
Disclosed herein is a system for selectively mordanting a dye to preselected areas of a black and white photographic silver image and rapidly removing all traces of the dye from the non-image areas. The system includes novel processing compositions to enable the entire process to be carried out rapidly with a minimum amount of equipment.

REFERENCES:
patent: 1303506 (1919-05-01), Shorrocks
patent: 1868085 (1932-07-01), Whitehorne
patent: 2108261 (1938-02-01), Jamieson
patent: 2206190 (1940-07-01), Jamieson
patent: 2318818 (1943-05-01), Tull
patent: 3642478 (1972-02-01), Brault
Clerc, Photography: Theory & Practice p. 377, 2nd edition, 1937.
Photo Lab Index, 1971, p. 3-260.

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