Low gamma photographic developer

Details Low gamma photographic developer Low gamma photographic developer

1979-01-12

1980-05-27

Kelley, Mary F.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Fixer

430481, G03C 530, G03C 538

Patent

active

042051240

ABSTRACT:
A photographic developer composition containing Phenidone and hydroquinone in a 1 to 2 weight ratio, the composition having a gamma less than 1 and a pH in the range of about 9.8 to 10.4. The composition is particularly useful as an extended range developer for rapid processing of aerial film.

REFERENCES:
patent: 3573912 (1971-04-01), Brown
patent: 3615513 (1971-10-01), Haist
patent: 3632341 (1972-01-01), Zacchia
patent: 3772019 (1973-11-01), Holden
patent: 3839046 (1974-10-01), Gent et al.
patent: 3870479 (1975-03-01), Kubotera et al.
Mason, Photographic Processing Chemistry, 1975, pp. 42-43.
Zonars, "New Low-Contrast Developer for Rapid Processing of Aerial and Duplicating Films", Jul. 1963.

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