US 12,269,959 B1
Ink set, image recording method, and recorded article
Kazuo Kamohara, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Nov. 1, 2022, as Appl. No. 18/051,523.
Application 18/051,523 is a continuation of application No. PCT/JP2021/015197, filed on Apr. 12, 2021.
Claims priority of application No. 2020-084438 (JP), filed on May 13, 2020; and application No. 2020-155882 (JP), filed on Sep. 16, 2020.
Int. Cl. C09D 11/40 (2014.01); B41J 11/00 (2006.01); B41M 5/50 (2006.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); C09D 11/38 (2014.01)
CPC C09D 11/40 (2013.01) [B41J 11/0021 (2021.01); B41M 5/502 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/38 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An ink set comprising:
an undercoat composition comprising at least one of a polymerizable monomer A including a polymerizable monomer A1 having a C log P value of 2.0 or less or an alkali-soluble polymer, and a surfactant; and
an ink comprising a polymerizable compound B,
wherein, in the polymerizable monomer A, a ratio of a monofunctional polymerizable monomer is 30 mass % or more, the polymerizable monomer A further includes a bifunctional polymerizable monomer A2 having at least one of a branched structure or an alicyclic structure, and
a content of the bifunctional polymerizable monomer A2 relative to a total amount of the polymerizable monomer A is 3 mass % to 20 mass %,
the undercoat composition comprises an isocyanate compound at a content of, relative to a total amount of the undercoat composition, less than 10 mass %, the undercoat composition comprises the alkali-soluble polymer at a content of, relative to a mass of a solid content of the undercoat composition, 1 mass % or more and 20 mass % or less,
a mass-ratio-based weighted mean of a number of functional groups in the polymerizable compound B, per unit molecular weight, is 0.65 or more, provided that a unit molecular weight of the polymerizable compound B being defined as 100, and
the ink comprises a tri- or higher functional polymerizable compound at a content of, relative to a total amount of the polymerizable compound B, less than 10 mass %.