Dye containing polarizing film

A dye-containing polarizing film which causes no light to break through the cross state over the visible wave length region and which comprises, in a film substrate,

• 1) one kind of disazo dye (I) and two kinds of dyes selected from the group [C],
• 2) one kind of disazo dye (I), one kind of dye selected from the group [A] and two kids dyes selected from the group [C], or
• 3) one kind of disazo dye (I), one kind of dye selected from the group [B] and one kind of dye selected from the group [C];
• wherein a disazo dye which free-acid form is represented by the formula (I)
• wherein Me is copper, A1 is a phenyl group which is substituted by at least one member selected from the group consisting of sulfo, sulfamoyl, nitro, C1-C4 alkyl, C1-C4 alkoxy, carboxy, halogen, and unsubstituted amino or amino substituted by one or two substituents selected from C1-C4 alkyl, hydroxy or cyano-substituted C1-C4 alkyl and C1-C4 alkylcarbonyl;
• or a napthyl group which is substituted by at least one of sulfo or hydroxy, B1 is a 1-naphthol or 2-naphthol residue which is substituted by sulfo or by sulfo and at least one member selected from the group consisting of hydroxy, unsubstituted amino and amino substituted by one or two substituents selected from C1-C4 alkyl, C1-C4 alkylcarbonyl, carbamoyl, sulfamoyl, unsubstituted phenyl, unsubstituted benzoyl, and phenyl or benzoyl substituted by sulfo, amino or C1-C4 alkoxy, and in which its hydroxy group is adjacent to the azo group and is linked with the transition metal Me to form the complex, and R1 is a C1-C4 alkoxy;
• a group [A] consisting of disazo dyes which free acid form is represented by the following formula (II)
• wherein Me is copper, A2 is a phenyl group which is substituted by at least one member selected from the group consisting of sulfo, sulfamoyl, nitro, C1-C4 alkyl, C1-C4 alkoxy, carboxy, halogen, and unsubstituted amino or amino substituted by one or two substituents selected from Cl1-C4 alkyl, hydroxy or cyano-substituted C1-C4 alkyl and C1-C4 alkylcarbonyl;
• or a naphthyl group which is substituted by at least one of sulfo or hydroxy, B2 is a 1-naphthol or 2-naphthol residue which is substituted by sulfo or by sulfo and at least one member selected from the group consisting of hydroxy, unsubstituted amino and amino substituted by one or two substituents selected from C1-C4 alkyl, C1-C4 alkylcarbonyl, carbamoyl, sulfamoyl, unsubstituted phenyl, unsubstituted benzoyl, and phenyl or benzoyl substituted by sulfo, amino or C1-C4 alkoxy, and in which the hydroxy group is adjacent to the azo group and is linked with the transition metal Me to form the complex, and R2 is hydrogan, C1-C4 alkyl, sulfo or unsubstituted amino or amino substituted by C1-C4 alkyl, C1-C4 alkylcarbonyl, C1-C4 alkylsulfonyl or carbamoyl;
• a group [B] consisting of trisazo dyes which free acid form is represented by the following formula (III)
• wherein A3 and B3 are same or different and are phenyl group which is substituted by at least one member selected from the group consisting of sulfo, sulfamoyl, nitro, C1-C4 alkyl, C1-C4 alkoxy, carboxy, halogen, unsubstituted amino and amino substituted by C1-C4 alkyl, hydroxy or cyano-substituted C1-C4 alkyl, C1-C4 alkylcarbonyl, phenyl, sulfophenyl, disulfophenyl, benzyl or carbamoyl;
• or naphthyl group which is substituted by at least one member selected from sulfo, hydroxy, unsubstituted amino and amino substitued by C1-C4 alkyl, hydroxy or cyano-substituted C1-C4 alkyl, Cl1-C4 alkylcarbonyl, phenyl, sulfophenyl, disulfophenyl, benzyl or carbamoyl, R3 is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, sulfo or unsubstituted amino or amino substituted by C1-C4 alkyl, C1-C4 alkylcarbonyl, C1-C4 alkylsulfonyl or carbamoyl, R4 is hydrogen, hydroxy or C1-C4 alkoxy, copper complex salts thereof;
• and
• a group [C] consisting of C.I. Direct Yellow 12, C.I. Direct Yellow 28, C.I. Direct Yellow 44, C.I. Direct Orange 26, C.I. Direct Orange 39, C.I. Direct Orange 107, C.I. Direct Red 2, C.I. Direct Red 31, C.I. Direct Red 79, C.I. Direct Red 81 and C.I. Direct Red 247;
• the weight ratio of the disazo dye (I) to the at least two kinds of dyes selected from the group consisting of [A], [B] and [C] being in the range of 0.1 to 3.0.