Patent ID: 8889764
Filing Date: 2014-11-18
Classification: B41J,C09D

Abstract:
1. A water-based ink for inkjet recording comprising a binder resin, a color material, a surfactant, and a water-based solvent, wherein: the surfactant is a fluorine-containing surfactant; the water-based solvent comprises: (1) a viscosity of the ink is more than 10 mPa·s and 30 mPa·s or less, the viscosity being measured by an E-type viscometer at 25° C. and 1 rpm over the ink weight change rate range of 0% to 10%, (2) a viscosity of the ink is 200 mPa·s at any one of the ink weight change rate within 35% or more and 55% or less, the viscosity being measured by the E-type viscometer at 25° C. and 1 rpm, and (3) a surface tension at 25° C. of the ink at the ink weight change rate of 5% is lower than a surface tension at 25° C. of the ink at the ink weight change rate of 0%.