Silver halide photographic material and image-forming method usi

Details Silver halide photographic material and image-forming method usi Silver halide photographic material and image-forming method usi

1999-04-28

2000-04-11

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430581, G03C 1035

Patent

active

060486821

ABSTRACT:
A silver halide photographic material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein at least 80% of the entire projected area of the silver halide grains contained in said silver halide emulsion layer are occupied by tabular silver halide grains having an aspect ratio of 2 or more and main planes of {111} faces, said silver halide grains comprise at least 80 mol % of silver chloride, and said tabular silver halide grains are spectrally sensitized with the dye represented by formula (S); ##STR1## wherein Z.sub.1 and Z.sub.2 each represents a sulfur atom, a selenium atom, an oxygen atom or a nitrogen atom; and V.sub.1 and V.sub.2 each represents a monovalent substituent, provided that V.sub.1 and V.sub.2 each does not represent an aromatic group and adjacent two or more groups represented by V.sub.1 or V.sub.2 are not bonded to each other to form a condensed ring; I.sub.1 and I.sub.2 each represents 0, 1, 2, 3 or 4; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; R.sub.1 and R.sub.2 each represents an alkyl group; n.sub.1 represents 0, 1 or 2; m.sub.1 represents a number of 0 or more necessary to neutralize the charge of the molecule; and M.sub.1 represents a charge balancing counter ion, and further an image-forming method is disclosed, which comprises imagewise exposing and development processing the above silver halide photographic material.

REFERENCES:
patent: 5176991 (1993-01-01), Jones et al.
patent: 5221602 (1993-06-01), Maskasky
patent: 5389509 (1995-02-01), Maskasky
patent: 5667949 (1997-09-01), Szajewski
patent: 5674674 (1997-10-01), Edwards et al.
patent: 5750325 (1998-05-01), Szajewski

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