Patent ID: 7705071
Filing Date: 2010-04-27
Classification: C09D

Abstract:
1. An aqueous ink to be used in an ink jet recording method that an ink is ejected from a recording head by action of thermal energy, wherein the ink comprises a pigment, a block polymer and a water-soluble organic solvent, wherein a hydrophilicity δm of the pigment falls within a range of from 21.5 or more to 23.5 or less, wherein the pigment is C.I. Pigment Violet 23, wherein a content (mass %) of the water-soluble organic solvent is from 5.0 mass % or more to 17.5 mass % or less with respect to the whole mass of the aqueous ink, and wherein the water-soluble organic solvent comprises polyethylene glycol having a weight average molecular weight of 1,000 or more.