Silver halide photographic material and method of processing the

Details Silver halide photographic material and method of processing the Silver halide photographic material and method of processing the

1993-08-27

1994-09-20

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430427, 430573, 430577, 430578, 430579, 430600, 430601, 430603, 430610, 430608, 430963, G03C 112, G03C 109

Patent

active

053488504

ABSTRACT:
A silver halide photographic material has on a support at least one light-sensitive silver halide emulsion layer which comprises silver halide emulsion grains having a chloride content: of at least 50 mol % and containing a metal selected from rhodium, ruthenium and rhenium in an amount of at least 10.sup.-8 mole per mole of silver, said silver halide emulsion being spectrally sensitized with a compound of general formula (I) and being chemically sensitized with a selenium or tellurium compound: ##STR1## wherein Z and Z.sub.1 each represents a group of nonmetallic atoms necessary to complete a 5- or 6-membered nitrogen-containing heterocyclic nucleus; R and R.sub.1 each represents an unsubstituted or substituted alkyl group, or an unsubstituted aryl group; Q and Q.sub.1 each represents a group of atoms necessary to complete a 4-thiazolidinone, 5-thiazolidinone or 4-imidazolidinone nucleus; L, L.sub.1 and L.sub.2 each represents an unsubstituted or substituted methine group; n.sub.1 and n.sub.2 each represents 0 or 1; X represents an anion; and m represents 0 or 1, wherein m=0 indicates that the dye forms an inner salt. The photographic material provides high sensitivity to He--Ne laser light and ensures high contrast in the photographic images.

REFERENCES:
patent: 4857450 (1989-08-01), Burrows et al.
patent: 5112731 (1992-05-01), Miyasaka
patent: 5215880 (1993-06-01), Kojima et al.
patent: 5238807 (1993-08-01), Sasaki et al.

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