Seiko Epson Corporation

Toru Saito

Hiroaki Kida

Masakazu Ohashi

Hiroki Nakane

Chigusa Sato

Keitaro Nakano

Toshiyuki Yoda

Tomoki Shinoda

Naoki Koike

Hiroyuki Kajimoto

Hiroshi Fukumoto

Taketoshi Kagose

Toshiyuki Miyabayashi

Kiyoshi Nakamura

Jun Ito

Satoru Miura

Kyohei Tanaka

Masashi Kamibayashi

Yoshihiro Watanabe

Masayuki Murai

Makoto Furue

Yuji Aoki

Hitoshi Tsuchiya

Ryoji Fujimori

Keiichiro Yoshino

Satoru Kobayashi

Masato Murayama

Ryota Miyasa

Takako Sugiyama

Masaki Ihara

Akinori Yamamoto

Masaaki Ando

Midori Sekine

Kana Mitsuzawa

A radiation curable ink jet composition includes polymerizable compounds and a photopolymerization initiator, the polymerizable compounds include a monofunctional monomer, a content of the monofunctional monomer with respect to a total mass of the polymerizable compounds is 90 percent by mass or more, and the photopolymerization initiator includes ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate.

Radiation curable ink jet composition and ink jet method

An ink jet recording method includes ejecting a radiation-curable ink jet composition to a recording medium from an ink jet head, and curing the ink jet composition ejected to the recording medium by irradiating with radiation from a LED irradiator having a peak wavelength of 250 to 310 nm to form a cured coating film. The ink jet composition contains a polymerizable compound and an α-hydroxyketone-based initiator.

Ink jet recording method and ink jet recording apparatus

The present invention provides a photocurable ink composition for ink jet recording with excellent curability. The photocurable ink composition for ink jet recording includes polymerizable compounds, a photopolymerization initiator, and a colorant, wherein the polymerizable compounds include a vinyl ether group-containing (meth)acrylate represented by general formula (I):CH═CR—COOR—O—CH═CH—R  (I)(wherein Ris a hydrogen atom or a methyl group, Ris a divalent organic residue having 2 to 20 carbon atoms, and Ris a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms) and phenoxyethyl (meth)acrylate.

Photocurable ink composition for ink jet recording and ink jet recording method

A radiation curable ink jet composition includes polymerizable compounds; and a photopolymerization initiator, the polymerizable compounds include a vinyl ether group-containing (meth)acrylate represented by the following general formula (I), a content of the vinyl ether group-containing (meth)acrylate with respect to a total mass of the radiation curable ink jet composition is 15 percent by mass or more, and the photopolymerization initiator includes ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate.HC═CR—CO—OR—O—CH═CH—R  (I)In the above formula, Rrepresents a hydrogen atom or a methyl group, Rrepresents a divalent organic residue having 2 to 20 carbon atoms, and Rrepresents a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms.

A radiation-curing ink jet ink composition includes a urethane (meth)acrylate including one (meth)acryloyl group, the amount of the urethane (meth)acrylate being 5.0% by mass or more and 30.0% by mass or less of the total amount of the ink composition, and a (meth)acrylate including an aromatic ring and one (meth)acryloyl group, the amount of the (meth)acrylate being 4.0% by mass or more and 50.0% by mass or less of the total amount of the ink composition.

Ink composition

A radiation-curable ink jet composition includes a multifunctional monomer and a vinyl methyl oxazolidinone. The content of the multifunctional monomer is 5 to 50 mass % based on the total amount of the radiation-curable ink jet composition.

Radiation-curable ink jet composition and ink jet method

A radiation-curable ink jet composition includes vinyl methyl oxazolidinone and a vinyl ether group-containing (meth)acrylate represented by the following formula (1):HC&#x2550;CR&#x2014;CO&#x2014;OR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R(where, Ris a hydrogen atom or a methyl group, Ris a divalent C2-C20 organic residue, and Ris a hydrogen atom or a monovalent C1-C11 organic residue).

A radiation-curable ink jet composition includes a monofunctional (meth)acrylate monomer and vinyl methyl oxazolidinone.

A UV-curable ink jet ink composition includes: 10.00% by mass or more and 60.00% by mass or less, relative to a total mass of the ink composition, of a compound represented by formula (A); 10.00% by mass or more and 50.00% by mass or less, relative to the total mass of the ink composition, of one or more monofunctional monomers having an alicyclic hydrocarbon group or a cyclic ether group; 0.05% by mass or more and 0.50% by mass or less, relative to the total mass of the ink composition, of one or more fluorescent brighteners including a compound represented by formula (b1), (b2), (b3), or (b4); and 3.00% by mass or more and 8.00% by mass or less, relative to the total mass of the ink composition, of one or more acylphosphine oxide polymerization initiators.

UV-curable ink jet ink composition

The present invention provides a photocurable ink composition for ink jet recording with excellent curability. The photocurable ink composition for ink jet recording includes polymerizable compounds, a photopolymerization initiator, and a colorant, wherein the polymerizable compounds include a vinyl ether group-containing (meth)acrylate represented by general formula (I):CH&#x2550;CR&#x2014;COOR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R&#x2003;&#x2003;(I)(wherein Ris a hydrogen atom or a methyl group, Ris a divalent organic residue having 2 to 20 carbon atoms, and Ris a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms) and phenoxyethyl (meth)acrylate.

A radiation curable ink comprises a compound represented by the following Formula (I): a compound represented by the following Formula (II): and a compound represented by the following Formula (III): 

Radiation curable ink

An inkset for ink jet textile printing includes a first ink having a pigment and a resin; and a second ink having a pigment, a resin, and an emulsifier, in which the emulsifier includes at least one kind selected from an anionic emulsifier represented by the following general formula (1) and a nonionic emulsifier represented by the following general formula (2), whose HLB value is 12 or more,R&#x2014;O&#x2014;(CH&#x2014;CH&#x2014;O)-A&#x2003;&#x2003;(1), andR&#x2014;O&#x2014;(CH&#x2014;CH&#x2014;O)&#x2014;H&#x2003;&#x2003;(2).

Inkset for ink jet textile printing and ink jet textile printing method

A treatment liquid composition contains water, 1,2-alkanediol, and an aggregating agent aggregating or thickening components of an ink composition containing a pigment and is used for a printing method performed by causing the ink composition to adhere to cloth by an ink jet method.

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Yamagata, Japan

Toru Saito