| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink set enabling image fastness and high-speed printability to be achieved in a heavy duty field. <P>SOLUTION: The inkjet ink set comprises the first liquid containing at least a carboxyvinyl polymer and water, and the second liquid containing at least a pigment as a coloring matter, a water-soluble solvent and the water. The first liquid is regulated so as to have a low pH so that the first liquid may have a low viscosity of ≤20 mPa s under a temperature condition of the liquid just before the jetting. The pH of a mixed liquid of the first and the second liquids obtained by imparting the first liquid to the same position on a recording medium before, when or after an image is formed by using the second liquid is 5-10. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
