Patent ID: 8372898
Filing Date: 2013-02-12
Classification: C09D

Abstract:
1. An aqueous cyan inkjet ink composition for use in ink jet printers comprising: (a) from about 1.0% to about 5.0% by weight, based on the total weight of the cyan inkjet ink composition, of a self-dispersed cyan pigment; (b) from about 15.0% to about 25.0% by weight, based on the total weight of the cyan inkjet ink composition, of a cosolvent mixture having: wherein X is H or C (c) from about 0.5% to about 2.0% by weight, based on the total weight of the cyan inkjet ink composition, of a surfactant; (d) from about 0.1% to about 2.0% by weight, based on the total weight of the cyan inkjet ink composition, of a polymeric additive; and (e) the balance an aqueous carrier, wherein the ink has excellent printhead maintenance, startup, print quality and minimized kogation.