Developing agent for silver halide photographic material, develo

Details Developing agent for silver halide photographic material, develo Developing agent for silver halide photographic material, develo

1996-11-12

1997-12-02

Jordan, Charles T.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

G03C 500

Patent

active

H00017000

ABSTRACT:
A silver halide photographic material is processed with a developing solution containing at least one kind of developing agent represented by the following general formula (A): ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different, and each represents a hydrogen atom or a substituent group, with the proviso that R.sub.1 and R.sub.2 are not methyl groups at the same time nor a combination of a hydrogen atom and a methyl group, thereby providing a novel method for forming an image by use of the developing solution not using a dihydroxybenzene compound as the developing agent, and more particularly a superhigh contrast negative image by use of the photographic material containing a hydrazine compound.

REFERENCES:
patent: 3337342 (1967-08-01), Green
patent: 5098819 (1992-03-01), Knapp
patent: 5236816 (1993-08-01), Purol et al.
patent: 5419997 (1995-05-01), Hirano
patent: 5474879 (1995-12-01), Fitterman et al.
patent: 5478697 (1995-12-01), Sakai et al.
patent: 5503965 (1996-04-01), Okutsu
patent: 5508152 (1996-04-01), Toyoda et al.

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