Ink-jet ink and recording method using the same

Abstract

An ink-jet ink is provided which exhibits excellent ejection stability during printing and results in improved abrasion resistance of text and images formed on various recording media, as well as improved image smoothness by employing an ink-jet ink wherein in the ink jet ink incorporating at least a pigment, water, and fine polymer particles, the ink viscosity ratio η2/η1 satisfies the conditions specified by Formula (1) below, and a recording method using the same: 0.8<η2/η2<5.0   Formula (1) wherein η1 represents the viscosity of an ink-jet ink at 25° C. which incorporates a viscosity retarding material or incorporates at least a pigment, water, and fine polymer particles, while η2 represents the viscosity of the above ink at 25° C. in which water equivalent to 10 percent by weight of the entire ink weight has been evaporated.

Dependencies are inferred from the claim text.