Title:
Preparation of photographic direct positive color images
United States Patent 3227552
US Patent References:
Process for avoiding color fog on photographic color material
- - 2309492
Direct positive photographs from hydrazine-containing developers
- - 2563785
Direct positive photographs using hydrazine in the emulsion
- - 2588982
Nonpolymeric sulfonated hydroquinone antistain agents
- - 2701197
Photographic color reproduction process
- - 2756142
Process for avoiding color fog on photographic color material
- - 2309492
Direct positive photographs from hydrazine-containing developers
- - 2563785
Direct positive photographs using hydrazine in the emulsion
- - 2588982
Nonpolymeric sulfonated hydroquinone antistain agents
- - 2701197
Photographic color reproduction process
- - 2756142
Inventors:
Whitmore, Keith E.
Publication Date:
01/04/1966
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Export Citation:
Assignee:
EASTMAN KODAK CO
Primary Class:
Other Classes:
430/226, 430/217, 430/409, 430/236, 430/218, 430/598, 430/241, 430/941, 430/358, 430/378
International Classes:
G01C19/40; G03C5/30; G03C7/30; G03C8/08; G03C8/12; G01C19/00; G03C8/02
US Patent References:
Foreign References:
| BE570272A |