申请人:TOJO Kaoru
公开号:US20090081420A1
公开(公告)日:2009-03-26
An ink composition is provided that includes (A) at least one polymerizable compound selected from the group consisting of a monofunctional radically polymerizable monomer having an aliphatic cyclic structure, an N-vinyllactam, and an aromatic monofunctional radically polymerizable monomer, (B) a radical polymerization initiator, (C) a pigment, and (D) a graft copolymer having a repeating unit represented by the Formula below in a graft chain.
(In the Formula, R denotes a hydrogen atom or a methyl group, X denotes a single bond, —O—, —CO—, —COO—, —CONR
1
—, —OCO—, or a phenylene group, R
1
denotes a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, L denotes a single bond or a divalent linking group, Z denotes —NR
2
R
3
, R
2
and R
3
independently denote a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and R
2
and R
3
may be bonded to each other to form a ring.) There are also provided an inkjet recording method that includes a step of discharging the ink composition above onto a recording medium and a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation, and a printed material recorded by the inkjet recording method.