| 摘要 |
PURPOSE:To improve a photosensitive, a spectral sensitization, a definition and a color separation ability of the titled element by incorporating a specific cumalin compd. to a silver halide emulsion layer. CONSTITUTION:The specific compd. shown by formula wherein (p) and (q) are each 0 or 1, R1 and R2 are each an alkyl group, R3 and R4 are each a hydrogen atom, an alkyl, an alkoxy group or a halogen atom, R3 and R4 may be each a six membered condensed ring, Z and Z' are each an atom capable of forming a five or a six membered ring, X<-> is an anion group, (r) is 1 or 2. The compd. is incorporated 5X10<-7>-5X10<-3>mol per 1mol silver halide. Since the prescribed compd. shown by the formula is incorporated to the above described emulsion layer, the titled element having useful functions of a sensitizer, a coloring matter, a filter coating material, an antihalation dye and an antiirradiation dye is obtd. |
