	US 12,410,332 B2
	Aqueous inkjet ink composition, printed matter, and inkjet printing method
Yoichi Sato, Osaka (JP); Hirohito Maeda, Osaka (JP); Kazuki Moriyasu, Osaka (JP); Eri Ueda, Osaka (JP); and Takaaki Sano, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 18/252,870
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Jul. 13, 2021, PCT No. PCT/JP2021/026311 § 371(c)(1), (2) Date May 12, 2023, PCT Pub. No. WO2022/176228, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 2021-023397 (JP), filed on Feb. 17, 2021.
Prior Publication US 2024/0010861 A1, Jan. 11, 2024
Int. Cl. C09D 11/32 (2014.01); B41J 2/01 (2006.01); C09D 11/00 (2014.01); C09D 11/107 (2014.01); C09D 11/322 (2014.01)

CPC C09D 11/322 (2013.01)

7 Claims

1. An aqueous inkjet ink composition comprising a pigment, an alkali-soluble resin, a surfactant, a water-soluble solvent, colloidal silica, and water,

wherein the surfactant contains a surfactant (A) having an HLB value of 3 or more and less than 10, and a surfactant (B) having an HLB value of 10 or more and 20 or less,

the water-soluble solvent represents 15% by mass or more and 60% by mass or less in the aqueous inkjet ink composition, and has a boiling point of 170° C. or more and 250° C. or less at 1 atm, and

a proportion of the colloidal silica is 0.05% by mass or more and 2% by mass or less in the aqueous inkjet ink composition.