| 摘要 |
PURPOSE:To spectrally sensitize red sensitivity by incorporating a sensitizing dye and a comd. each represented by each specified formula, in a silver halide photographic emulsion. CONSTITUTION:The silver halide photographic emulsion is prepared by incorporating a sensitizing dye represented by formula I (X1, X2 are each S or Se; Z1, Z2 are each a nonmetallic atomic group for forming a benzene or naphthalene ring; R1 is H or <=6C alkyl or the like; and R2, R3 are each <=10 alkyl or the like and at least one of them is substd. by sulfo or carboxy,) and a compd. represented by formula II, R25 being H, halogen, alkyl, or the like, Y being alkylene, arylene, aralkylene, or the like, and X21 being an anion. |
