| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide inkjet ink for regular paper which satisfies both of the prevention of curling and the prevention of strike-through and is also excellent in storage stability (dispersion stability of ink). <P>SOLUTION: The inkjet ink is characterized by containing a pigment, a polymer, water and a water-soluble organic solvent and pigment wherein the content of the water is from 10 mass% or more to less than 50 mass% based on the total ink mass, the SP value of the water soluble organic solvent that is most largely included among the water-soluble organic solvents is from 16.5 or more to less than 24.6, further the content of the water-soluble solvent having the SP value of from 16.5 or more to less than 24.6 is from 30 mass% or more to 90 mass% or less based on the total ink mass. The inkjet ink is further characterized by containing 0.01 ppm-50 ppm of Sr<SP>2+</SP>ion based on the total ink. <P>COPYRIGHT: (C)2007,JPO&INPIT |
