| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet ink which is excellent in image quality and high-speed printing adaptation on plain paper, has good storage stability and ejection stability and gives less load on maintenance devices for an inkjet recording apparatus. <P>SOLUTION: An inkjet ink includes a water dispersion of pigment-containing water-insoluble vinyl polymer particles, a water-soluble organic solvent and water, wherein the ink residue obtained by leaving the inkjet ink to stand under conditions of a temperature of 25°C and a humidity of 15% until substantially no mass change occurs, has a viscosity of 3,000 mPa s or less, and wherein the inkjet ink, the pH of which is adjusted to 7 with an acid, has a viscosity of 500 mPa s or more. <P>COPYRIGHT: (C)2010,JPO&INPIT |
