	US 12,421,410 B2
	Active energy ray curable inkjet ink and active energy ray curable ink set
Gosuke Kikutsuji, Tokyo (JP)
Assigned to artience Co., Ltd., Tokyo (JP); and TOYOCOLOR CO., LTD., Tokyo (JP)
Appl. No. 17/786,977
Filed by artience Co., Ltd., Tokyo (JP); and TOYOCOLOR CO., LTD., Tokyo (JP)
PCT Filed Nov. 18, 2020, PCT No. PCT/JP2020/043031 § 371(c)(1), (2) Date Jun. 17, 2022, PCT Pub. No. WO2021/124777, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 2019-230092 (JP), filed on Dec. 20, 2019.
Prior Publication US 2023/0102004 A1, Mar. 30, 2023
Int. Cl. C09D 11/40 (2014.01); C09D 11/037 (2014.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); B41M 5/00 (2006.01)

CPC C09D 11/40 (2013.01) [C09D 11/037 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01); B41M 5/0023 (2013.01)]

6 Claims

1. An active energy ray curable inkjet ink comprising a pigment (A), a colorant derivative (B), a pigment dispersing resin (C) and a polymerizable compound (D), wherein

the pigment (A) contains a C.I. pigment blue 15:6 and a quinacridone-based pigment,

the total mass of the blending amount of the C.I. pigment blue 15:6 and the blending amount of the quinacridone-based pigment is from 2 to 10% by mass based on the total mass of the ink,

the mass ratio of the C.I. pigment blue 15:6 and the quinacridone-based pigment is from 3:1 to 1:3,

the colorant derivative (B) contains a quinacridone-based pigment derivative, and

satisfying the relationship C1≥C2>0 when the acid value of the pigment dispersing resin (C) is denoted as C1 (mgKOH/g), and the amine value of the pigment dispersing resin (C) is denoted as C2 (mgKOH/g).