Photographic developing agents, process for developing using sam

Details Photographic developing agents, process for developing using sam Photographic developing agents, process for developing using sam

1976-11-03

1978-08-22

Talbert, Jr., Dennis E.

Gas separation: apparatus

Electric field separation apparatus

With nonelectrical gas treating or conditioning means

96 76R, 96 663, 96 95, G03C 300, G03C 148, G03C 106, G03C 530

Patent

active

041086635

ABSTRACT:
A photographic developing agent represented by the formula (I): ##STR1## wherein one of X and Y is a group capable of inhibiting development on release immediately after the developing agent is oxidized at the step of development, and the other of X and Y is an --NH--SO.sub.2 --Z group (wherein Z is an alkyl group, an aryl group or a heterocyclic group); A is a hydrogen atom or a group hydrolyzable under alkaline conditions; R.sub.1, R.sub.2, and R.sub.3, which may be the same or different, each is a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an --S--Z' group (wherein Z' is an alkyl group, an aryl group or a heterocyclic group), an --NH--SO.sub.2 --Z" group (wherein Z" is an alkyl group, an aryl group or a heterocyclic group), an acylamido group, an amino group, a halogen atom, a hydroxy group, or an acyloxy group; and R.sub.1 and R.sub.2 further may combine to form a ring, a silver halide photographic light-sensitive material having a photographic layer containing at least one compound selected from the compounds represented by the above formula (I), and a process for developing images by treating a photographic light-sensitive material with a developer containing at least one compound selected from the compounds represented by the above formula (I).

REFERENCES:
patent: B351673 (1975-01-01), Fleckenstein et al.
patent: 3295976 (1967-01-01), Abbott et al.
patent: 3928041 (1975-12-01), Fujiwhara et al.
patent: 3928312 (1975-12-01), Fleckenstein
patent: 3931144 (1976-01-01), Eldredge et al.
patent: 3980479 (1976-09-01), Fields et al.
Birr-Stabilization of Photographic Silver Halide Emulsions, Focal Press .COPYRGT.1974, N.Y., pp. 115, 116.
Research Disclosure; Feb., 1975; #13024, L. J. Fleckenstein, pp. 37 to 42.

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