Spectrally sensitized inner latent image type silver halide photographic emulsions

Claim 1

An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one monomethine cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photograhic emulsion and thereafter adding additionally at least one monomethine cyanine dye represented by general formula (I) to said emulsion ##STR9## wherein W and Y, which may be identical or different from each other, each represents an oxygen atom, a selenium atom, a sulfur atom or ##STR10## wherein R 5 represents a lower alkyl group which is unsubstituted or substituted by a halogen atom or a lower alkoxy group, or an allyl group, Z, Z 1 , Z 2 and Z 3 each represents an atomic group necessary to form a benzene ring or naphthalene ring, R 1 and R 2 each represents an unsubstituted alkyl group, a haloalkyl group, an alkoxyalkyl group, an aralkyl group, an aryloxyalkyl group or an allyl group, R 3 and R 4 each represents an alkyl group substituted with a carboxyl group or a sulfo group, but at least one of R 3 and R 4 represents an alkyl group substituted with a sulfo group, X 1 represents an anion, X 2 represents a cation, and n is 0 or 1.