Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1991-10-07

1994-03-01

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430584, G03C 120, G03C 128

Patent

active

052906752

ABSTRACT:
A silver halide photographic material comprising on a support at least one silver halide emulsion layer having a silver halide content of not lower than 90 mol %, wherein a silver halide emulsion in at least one of said silver halide emulsion layers having a silver chloride content of not lower than 90 mol % contains at least one compound represented by formula (I): ##STR1## wherein Z.sub.1 and Z.sub.2 each represents an atomic group required for forming a nitrogen-containing five-membered or six-membered heterocyclic ring; Q.sub.1 and Q.sub.2 each represents a methylene group; R.sub.1 and R.sub.2 each represents an alkyl group; R.sub.3 represents an alkyl group, an aryl group or a heterocyclic group; L.sub.1, L.sub.2, L.sub.3, L.sub.4 and L.sub.5 each represents a methine group; n.sub.1 and n.sub.2 each represents 0 or 1; M.sub.1 represents a counter ion for neutralizing electric charge; and m.sub.1 represents a number not less than 0 required for neutralizing electric charge in the molecule.

REFERENCES:
patent: 2481022 (1949-08-01), Kendall et al.
patent: 5037733 (1991-08-01), Goda
patent: 5093226 (1992-03-01), Ohshima
Luo et al., "Studies of Supersensitization of Some Bridged Dicarbocyanines by Triazino Stibenedisolfonic Acids", Journal of Imaging Science, 32(2), 1988, pp. 81-84.

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