Seiko Epson Corporation

Hiroki Nakane

Toru Saito

Hiroaki Kida

Chigusa Sato

Taketoshi Kagose

Keitaro Nakano

Jun Ito

Hiroshi Fukumoto

Satoru Miura

Toshiyuki Miyabayashi

Hiroyuki Kajimoto

Takashi Oyanagi

Akira Mizutani

Masako Fukuda

Chiyoshige Nakazawa

Shinichi Kato

Yoshinobu Sato

Toshihiro Shinbara

Tomohito Nakano

Hirotoshi Koyano

Hiroshi Sawada

Keiji Matsumoto

Hiroshi Mukai

Masaaki Itano

Kenji Kitada

Tsuyoshi Sano

Kiyohiko Takemoto

Eiji Okamoto

Shuichi Koganehira

Yusuke Mizutaki

Keiichiro Yoshino

Shoki Kasahara

Masato Murayama

Akira Shinoto

Shiki Kumagai

Toshihiko Wakabayashi

Masako Fukada

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

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.

An ink jet recording apparatus includes a recording head having a plurality of nozzles through which an ink composition containing an inorganic pigment is ejected, a nozzle surface having nozzle orifices, and a liquid-repellent film disposed on the nozzle surface; an absorbing member that absorbs the ink composition containing the inorganic pigment from the nozzle orifices and the nozzle surface; and an actuating mechanism including a pressing member that presses the absorbing member, which contains an impregnation liquid, and the nozzle surface relative to each other. The actuating mechanism moves at least one of the absorbing member and the recording head relative to the other to perform a cleaning operation in which the ink composition is removed from the nozzle surface with the absorbing member.

Ink jet recording apparatus

A photocurable ink composition includes polymerizable compounds and a photopolymerization initiator. The polymerizable compounds include vinyl ether group-containing (meth)acrylic esters represented by the following Formula (I):CH&#x2550;CR&#x2014;COOR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R&#x2003;&#x2003;(I)(wherein, 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), dipropylene glycol di(meth)acrylate, and monofunctional (meth)acrylate having an aromatic ring skeleton. The ink composition includes a coloring material.

Photocurable ink composition, recording method, recording apparatus, photocurable ink jet recording ink composition, and ink jet recording method

An ink jet recording apparatus includes a recording head having a plurality of nozzles through which an ink composition containing an inorganic pigment is ejected, a nozzle surface having nozzle orifices, and a liquid-repellent film disposed on the nozzle surface; an absorbing member that absorbs the ink composition containing the inorganic pigment from the nozzle orifices and the nozzle surface; and an actuating mechanism including a pressing member that presses the absorbing member and the nozzle surface relative to each other. The actuating mechanism moves at least one of the absorbing member and the recording head relative to the other to perform a cleaning operation in which the ink composition is removed from the nozzle surface with the absorbing member. The absorbing member contains an impregnation liquid having a surface tension of 45 mN/m or less during the cleaning operation.

Provided are a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 20 to 50 mass % of the total reaction components, and a black pigment (F1); and a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 10 to 50 mass % of the total reaction components, and a yellow pigment (F2).

Radiation-curable ink composition, ink jet recording method, and recorded matter

An ink composition for ultraviolet curable ink jets including monomer A represented by a general formula (I):CH2=CR1-COOR2O&#x2014;CH&#x2550;CH&#x2014;R3&#x2003;&#x2003;(I)

Ink composition for ultraviolet curable ink jets, ink jet recording apparatus using the same, ink jet recording method using the same, and ink set

The ink jet recording method includes discharging liquid droplets of a photocurable ink composition including a solvent, a polymerizable compound, and a photopolymerization initiator from a head to a recording medium to land the liquid droplets, thereby forming an image; evaporating the solvent included in the photocurable ink composition constituting the image; and irradiating the image after the second step with light, wherein when the irradiation is initiated in the third step, the content of the polymerizable compound included in the photocurable ink composition constituting the image after the second step is from 20 to 90% by mass, based on the total mass of the ink composition.

Ink jet recording method, photocurable ink jet ink composition, and ink jet recording device

An ultraviolet ray-curable clear ink composition includes a polymerizable compound; and a photopolymerization initiator, in which the polymerizable compound contains a vinyl ether group-containing (meth)acrylic acid ester represented by the following formula (I) and 5% by mass to 25% by mass of urethane oligomer with respect to the total mass of the ink composition.CH&#x2550;CR&#x2014;COOR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R&#x2003;&#x2003;(I)

Ultraviolet ray-curable clear ink composition and recording method

Provided is a UV curable type ink-jet ink composition containing a monomer A which is expressed by the following general formula (I):CH&#x2550;CR&#x2014;COOR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R&#x2003;&#x2003;(I)

Ultraviolet curable type ink-jet ink composition, recording method and recording apparatus using the same

An ink composition for ink jet recording includes a coating film forming material, a polyether-modified silicone oil, and water, wherein the polyether-modified silicone oil is soluble in a solvent in which a lower limit of an SP value is 8.5 or less and an upper limit of the SP value is 18.0 or more.

Ink composition for ink jet recording and ink jet recording method

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Matsumoto, Japan

Hiroki Nakane