Dye usable for photographic lightsensitive material, fine solid particle dispersion of said dye and silver halide photographic lightsensitive material containing said fine solid particle dispersion of said dye

Abstract

A dye represented by the following formula (1); Formula (1) wherein A represents an acidic nucleus, L1, L2 and L3 represent a methine group, n represents 0, 1 or 2, Z represents a nonmetalic atom group necessary to form a heterocyclic group by bonding with a nitrogen atom included in the above formula (1), Y represents a substituent represented by the following formula (2) or a heterocyclic group; Formula (2) wherein R1 and R2 represent an alkyl group, and R1 and R2 may form a ring by bonding with each other, R3 represents a hydrogen atom or an electron withdrawing group: said dye represented by the above formula (1) has at least one carboxy group or one alkylsulfonamide group in an aromatic ring portion of its molecular structure.

Dependencies are inferred from the claim text.