Filter dyes for photographic elements

摘要

A photographic element contains a dye of Formula (I): <IMAGE> I wherein G represents O or dicyanovinyl (-C(CN)2); E1 represents an electron withdrawing group; R1 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted hetereoaryl group; L1, L2 and L3 each independently represent substituted or unsubstituted methine groups; Z represents non-metal atoms which may be assembled to form a five- or six-membered heterocyclic ring other than furan; and n represents 0 or 1; and wherein the dye comprises at least one ionizable group with a pKa value between 4 and 12.