| 主权项 |
1. An ink composition, comprising:
as dyes, a dye (Bk-1) represented by the following formula (Bk-1); and a dye (Bw-1) represented by the following formula (Bw-1), wherein a content ratio A (dye (Bk-1):dye (Bw-1)) of the dye (Bk-1) and the dye (Bw-1) is 100:18 to 100:40; and a total content of the dyes is more than 3.5 mass %.(in formula (Bk-1), R1, R2, R5, R6, and R7 each independently represent a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a carboxyl group, a sulfo group, a sulfamoyl group, an N-alkyl aminosulfonyl group, N-phenyl-aminosulfonyl group, a (C1-C4) alkylsulfonyl group which may be substituted with a hydroxyl group, a phospho group, a nitro group, an acyl group, a ureido group, a (C1-C4) alkyl group (which may be substituted with a hydroxyl group or a (C1-C4) alkoxy group), a (C1-C4) alkoxy group (the alkyl group may be substituted with a hydroxyl group, a (C1-C4) alkoxy group, a sulfo group or a carboxyl group), an acylamino group, an alkylsulfonylamino group or a phenylsulfonylamino group (the phenyl group may be substituted with a halogen atom, an alkyl group or a nitro group), R3 and R4 each independently represent a hydrogen atom, a halogen atom, a cyano group, a carboxyl group, a sulfo group, a nitro group, a (C1-C4) alkyl group (which may be substituted with a hydroxyl group or a (C1-C4) alkoxy group), a (C1-C4) alkoxy group (the alkyl group may be substituted with a hydroxyl group, a (C1-C4) alkoxy group, a sulfo group or a carboxyl group), an acylamino group, an alkylsulfonylamino group or a phenylsulfonylamino group (the phenyl group may be substituted with a halogen atom, an alkyl group or a nitro group), and n represents 0 or 1.)(in formula (Bw-1), R21, R22, R23, R24, R25, R26, R27, and R28 each independently represent a hydrogen atom; a halogen atom; a sulfo group; a carboxy group; a sulfamoyl group; a carbamoyl group; a (C1-C4) alkyl group; a (C1-C4) alkoxy group with; a (C1-C4) alkoxy group which is substituted with at least one group selected from a group consisting of a hydroxy group, a (C1-C4) alkoxy group, a hydroxy(C1-C4) alkoxy group, a sulfo group, and a carboxy group as a substituent; a (C1-C4) alkylcarbonylamino group; a (C1-C4) alkylcarbonylamino group substituted with a carboxy group; a ureido group; a mono(C1-C4) alkylureido group; a di(C1-C4) alkylureido group; a mono(C1-C4) alkylureido group substituted with at least one group selected from the group consisting of a hydroxy group, a sulfo group, and a carboxy group as a substituent; a di(C1-C4) alkylureido group substituted with at least one group selected from the group consisting of a hydroxy group, a sulfo group, and a carboxy group as a substituent; a benzolamino group; a benzolamino group in which a benzene ring is substituted with at least one group selected from the group consisting of a halogen atom, a (C1-C4)alkyl group, a nitro group, a sulfo group, and a carboxy group; a benzenesulfonylamino group; or a phenylsulfonylamino group in which a benzene ring is substituted with at least one group selected from a halogen atom, a (C1-C4)alkyl group, a nitro group, a sulfo group, and a carboxy group; and X represents a bivalent crosslinking group). |
