| abstract |
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: n n nwherein 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, SO 3 H, PO 3 H 2 , CO 2 H, NO 2 , NH 2 , 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. |