Silver haide photographic emulsion and photographic light-sensitive material using same

A silver halide photographic emulsion comprising a silver halide grain having a spectral absorption maximum wavelength of less than 500 nm and a light absorption intensity of 60 or more or having a spectral absorption maximum wavelength of 500 nm or more and a light absorption intensity of 100 or more, and at least one sensitizing dye adsorbed in multiple layers onto said silver halide grain, wherein when a maximum value of the spectral sensitivity of said grain is Smax, the distance between the shortest wavelength showing 80% of Smax and the longest wavelength showing 80% of Smax is 20 nm or more and the distance between the shortest wavelength showing 50% of Smax and the longest wavelength showing 50% of Smax is 120 nm or less.

A silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer comprising a silver halide grain having adsorbed thereon a dye chromophore in more than one layer, wherein at least one spectral sensitizer containing the dye chromophore in said silver halide emulsion layer is represented by the following formula (IV):

• wherein Z24 represents an atomic group necessary for forming a 5- or 6-membered nitrogen-containing heterocyclic ring, Z25 represents an atomic group necessary for forming an aliphatic or aromatic ring and necessary for forming a polycyclic condensation structure comprising four or more rings including the nitrogen-containing heterocyclic ring formed by Z24, Q represents a group necessary for allowing the compound represented by formula (IV′) to form a methine dye, R24 represents an alkyl group, an aryl group or a heterocyclic group, L65 and L66 each represents a methine group, p17 represents 0 or 1, M7 represents a counter ion for balancing the electric charge, and m7 represents a number of from 0 to 10 necessary for neutralizing the electric charge of the molecule.