Photographic element comprising a red sensitive silver halide emulsion layer

摘要

A silver halide photographic element comprises a silver halide emulsion layer sensitized with a sensitizing dye of Formula I: <CHEM> wherein each of X1 and X2 is an oxygen atom, a sulfur atom, or a selenium atom, with the proviso that one of X1 and X2 is an oxygen atom and the other is a sulfur or selenium atom; V1 and V2 together or V2 and V3 together represent the atoms necessary to complete a fused benzene ring; each of V4 and V5 is independently a hydrogen or halogen atom, or an alkyl, alkoxy or aryl group; R1 is an acid substituted alkyl group; R2 is a 2-sulfoethyl group; and M is a counterion as necessary to balance the charge.