Patent ID: 9321923
Filing Date: 2016-04-26
CPC Classification: B41J,C09D

Claim Text:
1. Aqueous ink for inkjet comprising: water; a hydrosoluble organic solvent; a pigment; and a resin, wherein the hydrosoluble organic solvent comprises 2,3-butane diol, wherein the 2,3-butane diol comprises a (2R, 3R) form of 2,3-butane diol and a (2S, 3S) form of 2,3-butane diol, where the (2R, 3R) form of 2,3-butane diol represents (2R,3R)-(−)-2,3-butane diol and the (2S, 3S) form of 2,3-butane diol represents (2S,3S)-(+)-2,3-butane diol, wherein the (2R, 3R) form and the (2S, 3S) form of 2,3-butane diol are included in an amount of 50% by weight or more based on the total amount of the 2,3-butane diol, and wherein the 2,3-butane diol accounts for 5% by weight to 40% by weight of the aqueous ink.