| abstract |
The present invention is required for other ink-jet inks which are excellent in the fineness of the pigment, suppress the crystal growth of the pigment in various aqueous and oily dispersion media in the process of manufacturing the ink-jet ink, and are transparent and have coloring power. The present invention provides a colorant which can be used in the production of an inkjet ink which is excellent in industrial properties and which is well-balanced, and an inkjet ink using the same. When a specific azo pigment is synthesized by coupling a diazotized compound of an aromatic amine with a phenol, naphthol or pyrazolone as a coupling component, an azo compound having a different substituent or different structure from the azo pigment. An azo pigment composition for an ink-jet ink, which is produced and mixed together with a specific azo pigment at a ratio of 0.1 to 50 mol% based on the specific azo pigment. [Selection diagram] None |