US 12,264,252 B2
Ink set, printed work, and image formation method
Yoichi Sato, Osaka (JP); Kazuki Moriyasu, Osaka (JP); Eri Ueda, Osaka (JP); and Takaaki Sano, Osaka (JP)
Assigned to SAKATA INX CORPORATION, Osaka (JP)
Appl. No. 17/310,210
Filed by SAKATA INX CORPORATION, Osaka (JP)
PCT Filed Jan. 17, 2020, PCT No. PCT/JP2020/001518
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/213220, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 2019-080044 (JP), filed on Apr. 19, 2019.
Prior Publication US 2022/0056294 A1, Feb. 24, 2022
Int. Cl. C09D 11/40 (2014.01); B41M 5/00 (2006.01); C09D 11/023 (2014.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09D 11/102 (2014.01); C09D 11/108 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); C09D 11/54 (2014.01)
CPC C09D 11/40 (2013.01) [B41M 5/0023 (2013.01); C09D 11/023 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/102 (2013.01); C09D 11/108 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01); C09D 11/54 (2013.01)] 4 Claims
 
1. An ink set comprising:
an aqueous inkjet ink composition; and
a primer composition,
wherein the aqueous inkjet ink composition contains a pigment, an alkali-soluble resin which is an acrylic copolymer resin, a resin emulsion, a surfactant, a water-soluble solvent, and water, the resin emulsion contains a polyurethane resin emulsion and/or a polyolefin resin emulsion, the surfactant contains an alkyl sulfonate and/or a polyoxyethylene alkyl ether sulfate, the aqueous inkjet ink composition has a content of the alkyl sulfonate and/or the polyoxyethylene alkyl ether sulfate of 0.05% by mass or more and 0.5% by mass or less, and the primer composition contains an aggregation accelerator that accelerates aggregation of the aqueous inkjet ink composition.