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Primary Examiner: Kelley, Mary F.
Assistant Examiner:
Attorney: Rusz; Joseph E., Kuhn; Cedric H.

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Title: Low gamma photographic developer

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.


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Inventors: Hodes, Harvey A. (Eatontown, NJ, US)

Application Number: 003056
Filing Date: 1979-01-12
Publication_date: 1980-05-27
Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC)
Primary Class(es): 430/456 430/481
Other Classes:
US Patent Ref:
3573912Apr, 1971Brown96/61.
3615513Oct, 1971Haist96/61.
3632341Jan, 1972Zacchia96/66.
3772019Nov, 1973Holden96/66.
3839046Oct, 1974Gent et al.96/66.
3870479Mar, 1975Kubotera et al.96/66.

Other Refs: 906034
Sep, 1962GB
Other References: Mason, Photographic Processing Chemistry, 1975, pp. 42-43.
Zonars, "New Low-Contrast Developer for Rapid Processing of Aerial and Duplicating Films", Jul. 1963.