| 摘要 |
In an ink jet ink containing a pigment, a binder resin, water, an organic solvent, and a surfactant, the surface tension of the ink is in a region defined byγ0−γx≧1.0 (γ0: surface tension before evaporation,γx: surface tension at an evaporation rate X %) when the evaporation rate X of the ink is in a range of 0<X(%)≰20; the ink jet ink contains two or more organic solvents; and the content of an organic solvent of which the sumΣSP of the hydrogen bonding term and the polarity term of the solubility parameter is 8 to 18 MPa1/2 is 30 mass % or more and less than 95 mass % of the total amount of the organic solvents; and the content of the surfactant is less than the critical micelle concentration of the surfactant.
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