DISPERSION DYESTUFF INK FOR INKJET AND METHOD FOR INKJET-PRINTING BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide dispersion dyestuff ink for inkjet excellent in a long term color change stability and improved with ejection stability, and an inkjet-printing method.;SOLUTION: This dispersion dyestuff ink for inkjet, containing at least water, water-soluble organic solvent, the dispersion dyestuff and a dispersing agent is characterized by satisfying conditions specified by the following formula (1), (2) simultaneously on diluting the ink with acetone and water separately, and measuring the maximum absorption wave length A (nm) on diluting with acetone, and the maximum absorption wave length H (nm) on diluting with water of each of the spectroscopic absorption spectra at 350-800 nm. Formula (1): A520 nm, (2) |H-A|15 nm.;COPYRIGHT: (C)2005,JPO&NCIPI