Method of free radical photography utilizing a short light flash

Details Method of free radical photography utilizing a short light flash Method of free radical photography utilizing a short light flash

1974-04-18

1976-05-18

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 48R, 96 90R, G03C 524

Patent

active

039575136

ABSTRACT:
Novel method of free radical photography in which a colored image excellent in photographic properties such as gradient, resolving power, image stability, amount of fogs and contrast can be obtained while shortening the treating time and simplifying the treatment steps. The method comprises exposing a photosensitive composition comprising a film-forming transparent plastic, a compound capable of forming free radicals upon irradiation with light and a color former capable of reacting with these free radicals to produce color, to a light flash with a light quantity of 5 to 500 millijoules per square centimeter for a flashing time of 0.0001 to 0.005 second through a negative or positive original.

REFERENCES:
patent: 3033682, Hunt
patent: 3147117 (1964-09-01), Wainer et al.
patent: 3510300 (1970-05-01), Fotland et al.
patent: 3510304 (1970-05-01), Fichter et al.
patent: 3647448 (1972-03-01), DeMeyer et al.
patent: 3684510 (1972-08-01), Psaar et al.

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