Methine compound and silver halide photographic material contain

Details Methine compound and silver halide photographic material contain Methine compound and silver halide photographic material contain

1991-10-07

1992-12-29

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430576, G03C 112, G03C 128

Patent

active

051750805

ABSTRACT:
'Disclosed is a compound represented by the following general formula (I): ##STR1## wherein Z.sub.1 and Z.sub.2 each represents an oxygen atom, a sulfur atom or a selenium atom; R.sub.1 represents an alkyl group, an aryl group or a heterocyclic group; Q.sub.1 and Q.sub.2 each represents a methylene group; Q.sub.3 and Q.sub.4 each represents an atomic group required to form a five-membered, six-membered or seven-membered ring; L.sub.1 represents a methine group; A.sub.1 and A.sub.2 each represents an atomic group required to form a benzene ring; M.sub.1 represents a counter ion for neutralizing the electric charge of the compound; and m.sub.1 represents the number required for neutralizing that electric charge.
There is also disclosed a silver halide photographic material containing at least one compound of general formula (I).

REFERENCES:
patent: 5093226 (1992-03-01), Oshima

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