Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1991-05-20

1993-08-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430603, 430567, 430569, G03C 109

Patent

active

052388077

ABSTRACT:
A silver halide photographic material low in fogging generation and high in sensitivity comprising a silver halide emulsion selenium sensitized with at least one compound selected from the group consisting of compounds represented by general formulae (I) and (III): ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group, an acyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group or a sulfamoyl group, provided that a tetramethylselenourea is excluded; ##STR2## wherein each of R.sub.8, R.sub.9, R.sub.10 and R.sub.11 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group, an acyl group, a carboxyl group, a formyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group or a sulfamoyl group, provided that at least one pair of R.sub.8 and R.sub.9, R.sub.9 and R.sub.10, R.sub.10 and R.sub.11, and R.sub.11 and R.sub.8 combine to form a ring.

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European Search Report 91 10 8205, Berlin, Jul. 19, 1991, H. Stock.
Chemical Abstracts, The American Chemical Society, vol. 98, 1983, p. 573, abstract #71469u, "The Chemical of thio-and selenocarbonic acids. 7. Preparation of tetrasubstituted selenoureas and pentasubstituted selenosemicarbazides from carbon diselenide".
Chemical Abstracts, The American Chemical Society, vol. 89, 1978, p. 898, abstract #109242u, "Synthesis of some N-substituted and N,N'-disubstituted 1,3-imidazolidine-2-selenones".

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