Seiko Epson Corporation

Eiko Epson Corporation

Masahiro Yatake

Hidehiko Komatsu

Hiroko Hayashi

Takayoshi Kagata

Hiroshi Mukai

Kazuhiko Hara

Toshiyuki Miyabayashi

Hiroto Nakamura

Hitoshi Ohta

Motoki Masuda

Tetsuya Aoyama

Jun Ito

Akira Mizutani

Hitoshi Ota

Yasuhiro Oki

Masayuki Momose

Satoshi Tsubamoto

Fumitsugu Ito

Shuichi Koganehira

Kazuhiko Kitamura

Miharu Kanaya

Hironori Sato

Makoto Matsuzaki

Makoto Nagase

Katsuko Aoki

Akio Owatari

Shoki Kasahara

Takashi Ono

Tatsuya Yagyu

Masaaki Itano

Daisuke Ishihara

Tomohito Nakano

Kenji Kitada

Tomoyuki Okuyama

William Alan Marritt

Yoshifumi Hano

Yoshiyuki Ozawa

Tomoki Maruyama

Yoshihiro Sawatari

Nagatoshi Kasahara

Junko Takatsuna

Keiichi Noto

Jyun Ito

An ink jet ink composition is provided which contains water, a (meth)acrylic resin, and a wax emulsion and which is a water-based clear ink, and the (meth)acrylic resin described above satisfies predetermined requirements.

Ink jet ink composition, ink set, recording method, and recording apparatus

An ink jet ink composition includes: an acetoacetanilide-based monoazo pigment coated with a water-insoluble polymer; 1-(2-hydroxyethyl)-2-pyrrolidone; and water.

Ink jet ink composition and ink set

An ink set according to one embodiment of the disclosure includes a colored ink composition, which contains a pigment and is a water-based ink jet ink, and a water-based resin liquid composition which contains a resin, in which the resin liquid composition contains a urethane resin having an alicyclic structure or an aromatic ring structure and an acid value of 50 to 100 mg KOH/g.

Ink set and recording method

An ink jet printing method includes applying a primer ink composition containing cationic resin particles and water and an ink jet ink composition containing a dispersible anionic pigment, anionic resin particles, and water onto a printing medium such that a value Z defined by the following equation is in the range of 1.0 to 1.3:={()&#xd7;}/(),

Ink jet printing method, primer ink composition, and ink jet ink composition

Provided is a pretreatment agent for ink jet textile printing that can provide printed matters on fabric with high color-developing properties and less bleeding. The pretreatment agent includes at least water and (A) a multivalent metal ion and polymer fine particles, (B) a cationic polymer and polymer fine particles, or (C) cationic polymer fine particles.

Pretreatment agent for ink jet textile printing and ink jet textile printing process

An ink composition that performs recording by being attached on a heated non-absorbent recording medium or a heated low absorbency recording medium, the ink composition including a pigment; a core polymer and a shell polymer that covers at least a portion of the core polymer, and polymer particles in which the glass transition point of the polymer that configures the core polymer is more than 10&#xb0; C. lower than the glass transition point of the polymer that configures the shell polymer, and in which the polymer that configures the shell polymer includes a polymer having a (meth)acrylate monomer unit and a carboxylic acid monomer unit, and the content of the polymer particles is 3.0 mass % or more with respect to the total amount of the ink composition.

Ink composition, ink set, and recording method

An ink-jet ink of the invention is an ink-jet ink using a pigment and includes polymer particles containing an urethane polymer which includes at least repeating units derived from a polycarbonate diol, repeating units derived from an alicyclic isocyanate, and repeating units derived from an acid group-containing diol, which has an acid value of from 5 to 30 mgKOH/gm, and in which the number of urethane groups is 10 times or more the number of urea groups. The content of the polymer particles is from 0.5 to 3 times the content of the pigment.

Ink-jet ink, ink cartridge, ink-jet recording method

An ink jet recording ink has excellent dispersion stability and ejection stability and is capable of providing images free from bleeding. Such an ink exhibits excellent color development and rubbing resistance. The ink jet recording ink comprises a pigment dispersed by a polymer; water; at least one compound selected from the group consisting of an acetylene glycol surfactant and an acetylene alcohol surfactant; and 1,2-hexanediol. The pigment dispersed by the polymer is produced by a phase conversion emulsification, an emulsion polymerization, an acid deposition or a forced emulsification. The ink has a surface tension between 25 mN/m and 45 mN/m.

Ink jet recording ink, ink jet recording ink set, recording method, recorded matter and ink jet recording apparatus

An ink composition includes a color material, water, and polymer particles, in which the polymer particle has a core-shell structure having a core polymer and a shell polymer, a glass transition temperature of the core polymer is 30&#xb0; C. or higher, a glass transition temperature of the shell polymer is 50&#xb0; C. or higher, the glass transition temperature of the shell polymer is more than 10&#xb0; C. higher than the glass transition temperature of the core polymer, and the core polymer includes an aromatic monomer as a constituent unit and does not substantially include an alkyl polyol having a standard boiling point of 280&#xb0; C. or higher.

Ink composition and recording apparatus

An ink composition includes a pigment; polymer particles; and a polar solvent with a boiling point of 150&#xb0; C. or higher, in which the polymer particles include a core polymer and a shell polymer that covers at least a portion of the core polymer, a glass transition point of the polymer that configures the core polymer is more than 30&#xb0; C. lower than the glass transition point of the polymer that configures the shell polymer, the polymer that configures the shell polymer includes a polymer having a (meth)acrylate monomer unit and a carboxylic acid monomer unit, the content (solid content conversion) of the polymer particles is 1.0 mass % to 10 mass % with respect to the total amount of the ink composition, and the content of the polar solvent is 10 mass % to 40 mass % of the total amount of the ink composition.

Ink composition and recording method

There is provided an ink jet ink composition, which is used in a recording method including ejecting the ink jet ink composition from a recording head of head temperature C (unit: &#xb0; C.) onto a recording medium to adhere the ink jet ink composition thereonto and drying the recording medium, on which the ink jet ink composition is adhered, at drying temperature D (unit: &#xb0; C.), including water; and a polymer particle, in which the polymer particle has a core polymer containing a polymer of glass transition temperature A (unit: &#xb0; C.) and a shell polymer containing a polymer of glass transition temperature B (unit: &#xb0; C.) and formed on the surface of the core polymer, and in which the A, B, C, and D satisfy predetermined relations.

Ink jet ink composition, recording method, and recording apparatus

An ink composition for ink jet recording includes a penetrant for ink jet recording that includes a compound represented by the following formula (1) and 1% by mass or less of alcohol represented by the following formula (2).CH&#x2014;O&#x2014;(CH&#x2014;CH&#x2014;O)&#x2014;H&#x2003;&#x2003;(1)

Ink composition for ink jet recording, penetrant for ink jet recording, and recording apparatus

An ink composition, which is recorded on a heated recording medium, includes: a color material; water; a first polymer particle; and a second polymer particle, in which the first polymer particle has a core-shell structure including a first core polymer and a first shell polymer, the second polymer particle has a core-shell structure including a second core polymer and a second shell polymer, each of the first shell polymer and the second shell polymer has a glass transition temperature (Tg) of 40&#xb0; C. or higher, and the glass transition temperature Tg of the first shell polymer is higher than that of the second shell polymer.

Ink composition, recording apparatus, and recording method

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Nagano-ken, Japan

Masahiro Yatake