	US 12,435,232 B2
	Nonaqueous inkjet ink composition
Okinori Nakashima, Osaka (JP); Yoshiyuki Aoki, Osaka (JP); Ryohei Miyake, Osaka (JP); and Koki Ogasahara, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 17/766,211
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Oct. 28, 2020, PCT No. PCT/JP2020/040528 § 371(c)(1), (2) Date Apr. 1, 2022, PCT Pub. No. WO2021/085511, PCT Pub. Date May 6, 2021.
Claims priority of application No. 2019-197475 (JP), filed on Oct. 30, 2019.
Prior Publication US 2023/0046096 A1, Feb. 16, 2023
Int. Cl. C09D 11/36 (2014.01); C09D 11/326 (2014.01); C09D 11/40 (2014.01)

CPC C09D 11/36 (2013.01) [C09D 11/326 (2013.01); C09D 11/40 (2013.01)]

3 Claims

1. A nonaqueous inkjet ink composition containing acrylic-based resin, organic coloring pigment and/or carbon black, alumina, pigment dispersant, and organic solvent, wherein:

the organic solvent comprises propylene carbonate, diethylene glycol dialkyl ether, and dipropylene glycol alkyl ether acetate; and

alumina is contained by 5 to 30 parts by mass relative to 100 parts by mass representing a total of organic coloring pigment and carbon black.