Process for forming a direct positive image

Details Process for forming a direct positive image Process for forming a direct positive image

1977-11-21

1979-04-24

Brown, Travis

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 95, 96107, G03C 524

Patent

active

041509935

ABSTRACT:
A process for forming a direct positive image by developing, after imagewise exposure to an internal latent image type light-sensitive silver halide photographic material, with a surface developer for silver halide, which process comprises incorporating at least one fogging agent selected from hydrazine compounds, N-substituted cycloammonium salts and benzimidazole derivatives in combination with an amineborane compound into said light-sensitive silver halide photographic material, said surface developer and/or a treating bath used prior to the treatment by said surface developer.

REFERENCES:
patent: 3361564 (1968-01-01), Bigelow et al.
patent: 3647450 (1972-03-01), Calligaris et al.
patent: 3734738 (1973-05-01), Kurtz et al.
patent: 3850638 (1974-11-01), Willis et al.
patent: 3957488 (1976-05-01), Klotzer et al.
patent: 4030925 (1977-06-01), Leone et al.

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