| 摘要 |
The present invention provides a black ink composition obtained by mixing at least one colorant selected from the group consisting of a compound represented by the following formula (1) and a salt thereof, one or more organic acids and one or more organic bases: wherein R<1 >represents a phenyl group having a substituent group or a naphthyl group having a substituent group, R<2 >represent a phenylene group having a substituent group or a naphthylene group having a substituent group, R<3 >represents a 5- to 7-membered heterocyclic ring having at least one double bond and substituent group, and further, the above-mentioned substituent groups in the above-mentioned R<1 >to R<3 >are each independently selected from the group consisting of OH, SO3H, PO3H2, CO2H, NO2, NH2, a C1-4 alkyl group, a C1-4 alkyl group having a substituent group, a C1-4 alkoxyl group, a C1-4 alkoxyl group having a substituent group, an amino group, an amino group having a substituent group and a phenyl group having a substituent group. Further, a recording method and recorded matter using the above-mentioned black ink composition are also disclosed.
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