Silver halide photographic materials

摘要

A lith-type silver halide photographic material having high sensitivity and providing good dot quality images comprising a support having coated thereon a silver halide emulsion containing a sensitizing dye of dimethine merocyanine type represented by formula (I) and a sensitizing dye represented by formula (II): <IMAGE> (I) wherein R1 represents a sulfoalkyl group, a carboxyalkyl group, a sulfoaralkyl group, or a carboxyaralkyl group; the alkyl moiety of each alkyl group contains up to 4 carbon atoms; R2 represents a substituted or unsubstituted alkyl group or an aryl group; R3 represents -(CH2)n1CONH(CH2)m1OH or -(CH2)n2O(CH2)m2OH (wherein m1, m2, n1, and n2 each is 1 to 7; m1+n1 and m2+n2 each is 8 or less); W represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, an alkoxy group or a substituted or unsubstituted phenyl group; <IMAGE> (II) wherein Z represents a non-metallic atomic group necessary to complete a thiazolidine ring or a 4-thiazoline ring; R4 and R5 each represent a substituted or unsubstituted alkyl group, an allyl group, or a substituted or unsubstituted phenyl group; at least one of R4 and R5 being a sulfoalkyl group or a carboxyalkyl group; and R6 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.