Method of forming photographic images for lithographic use

Details Method of forming photographic images for lithographic use Method of forming photographic images for lithographic use

1975-11-07

1977-08-23

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 663, 96 68, E03C 530, E03C 176

Patent

active

040438171

ABSTRACT:
A continuous method for producing halftone images comprising:
1. image-wise exposing a lith-type silver halide photographic material comprising a silver halide emulsion with not less than about 85 mol% silver chloride and not more than about 8 mol% of silver iodide and containing at least one organic silver complex compound which is substantially insoluble in water in contiguous relationship with a photosensitive silver halide emulsion which contains not less than 60 mol% silver chloride and which is chemically and spectrally sensitized; and
2. developing the photographic material in a continuous fashion with a developer containing hydroquinone and a carbonyl-bisulfite adduct in the presence of a polyalkylene oxide of a molecular weight not less than 1000.

REFERENCES:
patent: 3394005 (1968-07-01), Blake
patent: 3708303 (1973-01-01), Salesin
patent: 3782945 (1974-01-01), Shimamura et al.
patent: 3785822 (1974-01-01), Overman
patent: 3832180 (1974-08-01), Douglas

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