Title:
Increasing speed and contrast of photographic emulsions
United States Patent 2419975
Inventors:
Trivelli, Adrian P. H.
Smith, William F.
Publication Date:
05/06/1947
Export Citation:
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Assignee:
EASTMAN KODAK CO
Primary Class:
430/441
Other Classes:
430/446, 430/448, 430/564, 430/599, 430/600, 430/944
International Classes:
G03C1/06; G03C1/06
View Patent Images:
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US Patent References:
2339213Color development process using aromatic hydrazines
2311098Photographic film comprising nitrocellulose film base stabilized by a dihydrazide of an aliphatic dicarboxylic acid
2309492Process for avoiding color fog on photographic color material
2286662Color photography
2266442Color print by multiple color development
2245236Method of increasing infrared sensitivity
2220929Photographic developing solutions containing aromatic hydrazines, their preparation and use
2196734Colored photographic image from hydrazine compounds
2127573Photographic emulsions
1763990Photographic light-sensitive material and process for making same
1560240Photographic sensitizer
1082622N/A
0956567N/A