| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide ink for inkjet of excellent injection performance, capable of preventing a filter from being clogged even when using a copper phthalocyanine pigment as a coloring material used in the ink for the inkjet. <P>SOLUTION: This ink for the inkjet contains at least the copper phthalocyanine pigment, a water-soluble resin, water, and a water-soluble organic solvent. In the ink for the inkjet, a condition 0.1<P/B<1 is satisfied where P represents a content P (mass%) of the copper phthalocyanine pigment, and where B represents a content B (mass%) of the water-soluble resin, on the basis of total ink mass, a dielectric constant of the water-soluble organic solvent is 30.0 or more less than 70.0, and a content (mass%) of the water-soluble organic solvent is 5.0 mass% or more to 15.0 mass% or less, on the basis of total ink mass. <P>COPYRIGHT: (C)2009,JPO&INPIT |
