Seiko Epson Corporation

Hiroaki Kida

Toru Saito

Keitaro Nakano

Hiroshi Fukumoto

Hiroki Nakane

Chigusa Sato

Hiroyuki Kajimoto

Taketoshi Kagose

Jun Ito

Toshiyuki Miyabayashi

Masaaki Ando

Satoru Miura

Hitoshi Tsuchiya

Toshiyuki Yoda

Masaru Terada

Shintaro Asai

Toshio Kumagai

Yoshihiro Kobayashi

Tetsuya Aoyama

Mitsuaki Yoshizawa

Kaoru Koike

Yusuke Mizutaki

Hiroshi Takiguchi

Kei Hiruma

Tomoyuki Ushiyama

Naoyuki Toyoda

Mitsunobu Nakatani

Kenta Tsukada

Toyohiko Mitsuzawa

Atsushi Denda

Kenichiro Kubota

Akira Matsumoto

A metal pigment composition of the present disclosure is a coloring composition or a composition to be used for preparation of the coloring composition and includes: a metal pigment; a polyoxyalkyleneamine compound; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent is at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2)(A-R—O)P(O)(OH)  (1)(A-R)P(O)(OH)  (2).

Metal pigment composition and coloring method

A coloring composition of the present disclosure includes a metal pigment; an acrylic-based resin having an acid value of 200 mgKOH/g or less; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).(RO)P(O)(OH)  (1)(R)P(O)(OH)  (2)

Coloring composition and coloring method

An ink jet printing method includes a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from an ink jet head to apply the metallic ink composition onto a printing medium, a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater, and a coloring ink application step of ejecting a coloring ink composition containing a coloring material from an ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium. Each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink.

Ink jet printing method and ink jet printing apparatus

A recording method of the present disclosure, which is a recording method of performing recording on a recording medium by using a recording device including an ink jet head, includes ejecting a composition for ink jet from the ink jet head, in which the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of scaly metal particles, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less.

Recording method and recording device

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

An ink jet ink set includes a plurality of inks to be ejected by an ink jet method. The ink set includes a first ink containing metal particles, and a second ink containing a coloring agent selected from materials other than metal. The surface tension of the first ink is lower than that of the second ink.

Ink jet ink set and printing method

A solvent-based ink composition is provided that includes: an organic solvent; a surface-treated metal powder; and a polyoxyethylene alkyl ether phosphoric acid compound, the content of the polyoxyethylene alkyl ether phosphoric acid compound with respect to the total mass of an ink is 0.1 to 10.0 percent by mass, and the surface-treated metal powder contains aluminum or an aluminum alloy and is surface-treated by a surface treating agent of a fluorine-based compound.

Solvent-based 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.

An ink jet recording method includes ejecting an ultraviolet-ray curable ink of which a viscosity at 28&#xb0; C. is 8 mPa&#xb7;s or more from a head to a recording medium, and curing the ultraviolet-ray curable ink attached to the recording medium, wherein, in the ejecting of the ultraviolet-ray curable ink, the ultraviolet-ray curable ink is heated such that a temperature of the ejected ultraviolet-ray curable ink becomes 28&#xb0; C. to 40&#xb0; C., and a viscosity of the ultraviolet-ray curable ink at the temperature is 15 mPa&#xb7;s or less.

Ink jet recording method, ultraviolet-ray curable ink, and ink jet recording apparatus

An ink jet composition of the invention is discharged by an ink jet method and includes: metal powder; an organic solvent; and a resin having a styrene-maleic acid structure as a binder resin, in which the ink jet composition contains metal powder surface-treated with a fluorine-based compound as the metal powder.

Ink jet composition and recorded matter

Provided is an ink jet recording method including: discharging an ultraviolet ray-curable ink, which has a viscosity at 20&#xb0; C. of 25 mPa&#xb7;s or less and an average equivalent of polymerizable unsaturated double bond of 100 to 150, from a head onto a recording medium at a discharge temperature of 30&#xb0; C. to 40&#xb0; C.; and irradiating the ultraviolet ray-curable ink, attached onto the recording medium, with ultraviolet rays emitted from a light source to cure the ultraviolet ray-curable ink.

Ink jet recording method and 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

A non-aqueous ink jet composition includes a surface-treated metal powder, wherein a dissolved oxygen reduction rate is 2.0 kPa/h or more and 20.0 kPa/h or less in an environment of 25&#xb0; C. and 1.0 atm.

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Shiojiri, Japan

Hiroaki Kida