| abstract |
Disclosed herein is an ink comprising a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the ink contains in combination a compound of the general formula <IMAGE> (I) wherein R1 denotes hydrogen, a nitro group or an amino group, and R2 denotes a carboxyl group, a sulfonic group, a phosphoric group or a salt thereof, and at least one compound selected from the group consisting of primary to tertiary amines, derivatives thereof, and complexes thereof. |