| abstract |
PROBLEM TO BE SOLVED: To provide an ink-jet ink excellent in visibility, dispersibility, and ejection stability, a method for producing the same, and a method for printing the ink-jet ink. The ink-jet ink of the present invention contains at least water, sodium iron chlorophyllin and / or copper chlorophyllin, and a vegetable carbon powder pigment. The inkjet ink production method of the present invention includes a first step of producing a dispersion by mixing plant charcoal powder pigment, iron chlorophyllin sodium and / or copper chlorophyllin sodium, and water at a predetermined ratio, and a dispersion. And a second step of stirring and mixing water and the water-soluble organic solvent. In the printing method of the present invention, the inkjet ink is ejected from a drop-on-demand inkjet apparatus, and the inkjet ink is adhered to an object to be printed. [Selection figure] None |