Process for increasing the effective speed of photographic films

Details Process for increasing the effective speed of photographic films Process for increasing the effective speed of photographic films

1981-01-16

1982-08-17

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Forming combined chromatic and achromatic images

430366, 430373, 430393, G03C 700

Patent

active

043450237

ABSTRACT:
A process is disclosed for enhancing the speed of both certain black and white and color films, through initial black-and-white development, and redevelopment with color coupling developers and color coupling dye units, and replacement of silver units with multiple color dye units for each silver unit that provide a color image enhanced over that provided by the silver image.

REFERENCES:
patent: 2229137 (1941-01-01), Schneider
patent: 2249542 (1941-03-01), Schinzel
patent: 2623822 (1952-12-01), Duerr
patent: 2737457 (1956-03-01), Childress
patent: 3776727 (1973-12-01), Nassenstein et al.
patent: 3923511 (1975-12-01), Bissonette
patent: 4183750 (1980-01-01), Goldberg
patent: 4192681 (1980-03-01), Fujiwhara et al.

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