Silver halide photographic materials

Details Silver halide photographic materials Silver halide photographic materials

1989-06-28

1991-03-12

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430527, 430529, 430530, G03C 106

Patent

active

049992767

ABSTRACT:
A silver halide photographic material which comprises a support having thereon at least one of silver halide emulsion layer and other hydrophilic colloid layer where at least one of said silver halide emulsion layer and other hydrophilic colloid layer contains a hydrazine derivative represented by formula (I), and also having thereon, as a constitutional layer, at least one electroconductive layer having a surface resistivity of 1.times.10.sup.12 .OMEGA. or less in an atmosphere of 25.degree. C. and 25% RH; ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; A.sub.1 and A.sub.2 are both hydrogen atoms, or one of them represents a hydrogen atom and the other represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group. The material can be processed with a stable developer under a bright room condition to give a high contrast image. The material processed has negligible pinholes.

REFERENCES:
patent: 4495276 (1985-01-01), Takimoto et al.
patent: 4797353 (1989-01-01), Yamada et al.
patent: 4803149 (1989-02-01), Takahashi et al.
patent: 4818659 (1989-04-01), Takahashi et al.

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