Infrared sensitized silver halide light-sensitive element with mordant dye over layer

Claim 1

A silver halide light-sensitive element comprising a support having provided thereon a silver halide light-sensitive emulsion layer that has been infrared-sensitized, so as to have a sensitivity maximum at a wavelength longer than 750 nm, with at least one sensitizing dye, present in a total amount of from 5×10 -7 to 5×10 -3 mol per mol of silver halide, selected from the group consisting of tricarbocyanine dyes represented by formula (IIIa) or (IIIb) and 4-quinoline nucleus-containing dicarbocyanine dyes represented by formula (IIIc) ##STR28## wherein R represents a hydrogen atom, a methyl group, a methoxy group, or an ethoxy group; R 11 and R 12 , which may be the same or different, each represents an alkyl group or a substituted alkyl group; D represents a divalent atomic group necessary to form a substituted or unsubstituted ethylenic linkage; Z and Z 1 each represents a non-metallic atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; X.sup.⊖ represents an acid anion; and n represents 1 or 2; ##STR29## wherein R 11 , R 12 , Z, Z 1 , and X.sup.⊖ are the same as defined above for formula (IIIa); R 13 and R 14 each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a phenyl group or a benzyl group; R 15 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a phenyl group, a benzyl group or ##STR30## wherein W 1 and W 2 each represents a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms in its alkyl moiety or an aryl group, or W 1 and W 2 together form a 5- or 6-membered nitrogen-containing heterocyclic ring; and D 1 and D 2 each represents a hydrogen atom, or D 1 and D 2 together form a substituted or unsubstituted ethylenic linkage; ##STR31## wherein R 16 and R 17 each represents an alkyl group or a substituted alkyl group; R 18 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a phenyl group or a benzyl group; V represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom, or a substituted alkyl group; Z 12 represents a non-metallic atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; X.sup.⊖ represents an acid anion; and m, n 1 and p each represents 1 or 2, and at least one light-insensitive hydrophilic colloidal layer on said silver halide light-sensitive emulsion layer, wherein said light-insensitive hydrophilic colloidal layer contains a polymer mordant and at least one water-soluble dye, in a total amount of from 10 -3 to 1 g/m 2 , said dye having an absorption maximum at a wavelength between 350 nm and 750 nm, ratio of a density at 780 nm to a density at absorption maximum of 0.6 or less and being selected from dyes represented by formula (Ia) ##STR32## wherein Q and Q 1 each represents an atomic group necessary to form a pyrazolone, barbitruic acid, thiobarbituric acid, isoxazolone, 3-oxythionaphthene, or 1,3-indanedione group; R 0 represents a hydrogen atom, a halogen atom, or a lower alkyl group; and M represents a hydrogen atom, a sodium atom, or a potassium atom; and dyes represented by formula (Id) ##STR33## wherein V 4 represents a sulfo group or a carboxyl group; and n 4 represents 2, 3 or 4.