Dry working photographic process relating to N-vinyl compound sy

Details Dry working photographic process relating to N-vinyl compound sy Dry working photographic process relating to N-vinyl compound sy

1974-07-23

1976-04-27

Brammer, Jack P.

Gas separation: apparatus

Electric field separation apparatus

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

96 41, 96 42, 96 43, 96 48HD, 96 90R, 354 6, 346110R, 355 20, G03C 532, G03C 524, G03C 152

Patent

active

039532100

ABSTRACT:
A film coated with a dispersion of an N-vinyl compound, an organic halogen compound and a sensitizer in gelatin is preheated at 60.degree.-120.degree.C before an imagewise exposure to sensitize the film and to destroy fog-nuclei. After the imagewise exposure the film is subjected to a red light flood exposure for intensifying latent image, heating for development and flood light exposure for fixing to give a negative image of high contrast. The preheating may be applied to a film once exposed to extinguish the resulting latent image and thereby to be subjected to another exposure.

REFERENCES:
patent: 2944897 (1960-07-01), Shirk
patent: 3042518 (1962-07-01), Wainer
patent: 3476562 (1969-11-01), Yamada et al.
patent: 3503745 (1970-03-01), Yamada et al.
patent: 3607266 (1971-09-01), Yamada et al.
patent: 3620748 (1971-11-01), Fichter
patent: 3624228 (1971-11-01), Fotland
patent: 3658533 (1972-04-01), Fotland et al.
patent: 3697276 (1972-10-01), Lewis et al.
patent: 3741651 (1973-06-01), Nishiyama et al.

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