Patent ID: 9056993
Filing Date: 2015-06-16
Classification: C08K,C09D,Y10T

Abstract:
1. An ink composition comprising: a pigment; a dispersant; a hydrosoluble solvent which comprises at least one of 3-ethyl-3-hydroxymethyl oxetane, isopropylidene glycerol, N,N,-dimethyl-β-methoxy propionamide, and N,N-dimethyl-β-butoxy propionamide; and water, wherein the pigment is represented by the following chemical formula 1: where R represents hydrogen, an alkyl group having one to three carbon atoms, or chlorine, wherein the ink composition satisfies the following relations 1 and 2: where X represents a minimum absorbance in a wavelength range of from 400 nm to 450 nm, Y represents an absorbance of a maximum peak in a wavelength range of from 500 nm to 550 nm, and Z represents an absorbance of a maximum peak in a wavelength range of from 550 nm to 600 nm, and wherein the dispersant is represented by the following Chemical formula 2 where A