	US 11,898,043 B2
	Ink jet ink composition set and ink jet recording method
Kazuto Aoki, Shiojiri (JP); Ryota Miyasa, Matsumoto (JP); Hideki Okada, Shiojiri (JP); and Masakazu Ohashi, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Aug. 30, 2021, as Appl. No. 17/460,939.
Claims priority of application No. 2020-145443 (JP), filed on Aug. 31, 2020.
Prior Publication US 2022/0064465 A1, Mar. 3, 2022
Int. Cl. C09D 11/322 (2014.01); D06P 5/30 (2006.01); C09D 11/40 (2014.01)

CPC C09D 11/322 (2013.01) [C09D 11/40 (2013.01); D06P 5/30 (2013.01)]

11 Claims

1. An ink jet ink composition set comprising:

a white ink jet ink composition; and

a nonwhite ink jet ink composition,

wherein the white ink jet ink composition contains a white pigment, resin particles, and water;

the nonwhite ink jet ink composition contains a nonwhite pigment, resin particles, and water, the nonwhite pigment being at least one of a cyan pigment a yellow pigment, a magenta pigment, and a black pigment;

the white pigment has cation responsiveness; and

the absolute value of zeta potential of the white pigment is lower than the absolute value of zeta potential of the nonwhite pigment.