Importance

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Abstract

This invention relates to a silver halide photographic material comprising at least one silver halide emulsion having associated therewith at least one dye of Formula I ##STR1## wherein: W and W' represent independently an O atom, a S atom, a Se atom or a NR' group wherein R' is a substituted or unsubstituted alkyl group, Z.sub.1 represents a substituted or unsubstituted aromatic group, Z.sub.1 ' independently represents a fused aromatic group or a substituted or unsubstituted aromatic group which may be appended directly to the dye or Z.sub.1 ' represents LZ.sub.2 where L represents a linking group and Z.sub.2 represents a substituted or unsubstituted aromatic group or substituted or unsubstituted alkyl group, L.sub.1, L.sub.2, and L.sub.3 independently represent methine groups bearing a hydrogen, substituted or unsubstituted alkyl group, or a halogen atom, n represents 0 or 1, the benzene rings shown can be further substituted or unsubstituted, R.sub.1 and R.sub.2 are both substituted or unsubstituted alkyl groups, R.sub.3 is hydrogen or a substituted or unsubstituted alkyl group, X is one or more ions as needed to balance the charge on the molecule.

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First Claim