申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0474047A1
公开(公告)日:1992-03-11
Disclosed is a silver halide emulsion, which comprises at least one methine dye represented by the general formula (I):
wherein MET represents an atomic group having a methine dye structure; Q represents a divalent linking group containing at least one carbon, nitrogen, sulfur or oxygen atom; ℓ1 represents an integer 1 or 2; 12 represents an integer 0 or 1, ℓ3 represents an integer from 1 to 4; and Ar represents an aromatic polycyclic group formed of 8 or more atoms containing at least one nitrogen atom, with the proviso that said nitrogen atom is in a form such that tautomerism does not produce
Also disclosed is a silver halide photographic material, which comprises on a support a silver halide photographic emulsion layer comprising silver halide grains containing iron ions in an amount of 10-7 to 10-3 mol per mol of silver halide and having a localized phase with an iron ion concentration of 10 times or more than that of the other portions, in a surface layer falling within 50% or less of the volume of the grain and at least one methine dye represented by general formula (I') and which exhibits a blue sensitivity difference of 0.1 or less between when it is developed after exposure in vacuo under 10-5 torr and when it is developed after exposure in air under 760 torr:
wherein MET represents an atomic group having a methine dye structure; Q represents a divalent linking group containing at least one of a carbon, a nitrogen, a sulfur or an oxygen atom; Ar' represents an aromatic polycyclic group formed of 8 or more atoms; ℓ1 represents an integer 1 or 2; 12 represents an integer 0 or 1; and ℓ3 represents an integer from 1 to 4.
本发明公开了一种卤化银乳液,它包含至少一种由通式(I)表示的甲基染料:
其中,MET 代表具有亚甲基染料结构的原子团;Q 代表至少含有一个碳原子、氮原子、硫原子或氧原子的二价连接基团;ℓ1 代表整数 1 或 2;12 代表整数 0 或 1,ℓ3 代表 1 至 4 的整数;Ar 代表由 8 个或更多含有至少一个氮原子的原子组成的芳香族多环基团,但上述氮原子的形态不会产生同分异构现象。
本发明还公开了一种卤化银感光材料,它包括在支撑体上的卤化银感光乳剂层,该层由卤化银颗粒组成,卤化银颗粒中含有铁离子,含量为每摩尔卤化银 10-7 至 10-3 摩尔,并且在颗粒体积的 50%或更小的表面层中,具有铁离子浓度为其他部分 10 倍或更高的局部相,以及至少一种由通式(I')表示的甲胺染料,该材料在显影时的蓝色感光度差为 0.在 10-5 托的真空中曝光后显影与在 760 托的空气中曝光后显影的蓝色灵敏度差异为 0.1 或更小:
其中,MET 代表具有亚甲基染料结构的原子团;Q 代表含有碳原子、氮原子、硫原子或氧原子中至少一个原子的二价连接基团;Ar' 代表由 8 个或更多原子组成的芳香族多环基团;ℓ1 代表 1 或 2 的整数;12 代表 0 或 1 的整数;ℓ3 代表 1 至 4 的整数。