G - Physics – 03 – C
Patent
G - Physics
03
C
96/60
G03C 5/30 (2006.01) G03C 5/50 (2006.01) G03C 7/00 (2006.01) G03C 7/413 (2006.01)
Patent
CA 1101721
ABSTRACT OF THE DISCLOSURE A high speed color reversal cine film with latent ima- ges recorded thereon is so processed as to color-develop the lat- ent images and concurrently reduce the high contrast at the dark end of the tone scale which is inherent in the prior art develop- ment of such film. The new method utilizes in the color develop- er bath increased amounts (in comparison with prior art color developer baths) of a competing coupler such as citrazinic acid and of a silver halide solvent such as ethylene diamine and re- duces the amount of a reversal agent such as t-butylamine borane, and also includes a competing non-coupling developer such as 4- hydroxymethyl-4-methyl-1-phenyl-3-pyrazolidone, or phenidone, or a derivative thereof.
304517
Hunt (philip A.) Chemical Corporation
Swabey Ogilvy Renault
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