Seiko Epson Corporation

Sanyo Chemical Industries, Ltd.

Takeshi Yano

Tetsuya Aoyama

Ippei Okuda

Shinichi Naito

Hideki Oguchi

Miho Nakamura

Mitsuaki Kosaka

Yasunari Ikeda

Takayoshi Kagata

Hiroshi Fukumoto

Hitoshi Ohta

Hidehiko Komatsu

Mitsuaki Yoshizawa

Shoki Kasahara

Yusuke Mizutaki

Katsuko Aoki

Kenji Kitada

Yoshitaka Miyajima

Shugo Hattori

Akiko Kawase

Yuki Wakushima

Shigeki Kawada

Hiroshi Odajima

Nao Kozaka

Chitae Hashizume

Provided is an aqueous pigment dispersion having high initial dispersibility, high storage stability, and high color developability after printing, and particularly having high rub resistance (rubbing fastness) in cotton fabrics. An aqueous pigment dispersion for an aqueous inkjet ink, including a pigment and an aqueous medium, the pigment being dispersed with a polyurethane resin prepared by reacting an active hydrogen atom-containing component (A) with an organic polyisocyanate component (B), the active hydrogen atom-containing component (A) containing a polycarbonate polyol (a1), the organic polyisocyanate component (B) containing at least one compounds selected from the group consisting of aliphatic polyisocyanates (b1), alicyclic polyisocyanates (b2), and aromatic polyisocyanates (b3), wherein a coating film formed by drying the aqueous pigment dispersion at 50° C. for 12 hours has a storage modulus G' at 160° C. of 1 to 10 MPa.

Aqueous pigment dispersion

An ink jet ink composition contains a dye having an azo group, water, and a hindered amine compound having a radical. The dissolved nitrogen concentration of the ink composition is 10 ppm or less.

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

An ink jet recording apparatus includes a discharge head including a nozzle discharging ink to a recording medium and a cap capable of covering the nozzle of the discharge head. The ink contains water, a colorant, and an organic compound which is solid at 25.0&#xb0; C. and which has an octanol/water distribution coefficient of 0.0 or less. The cap includes no ink absorber.

Ink jet recording apparatus

An ink jet recording method includes a reaction liquid attaching process of attaching a reaction liquid containing a coagulant having solubility of 120 g or less in 100 g of water as a coagulant which coagulates components of an ink composition to a low absorbent recording medium or a non-absorbent recording medium to form a first recorded region, and an ink composition attaching process of attaching the ink composition containing water and a resin having a percentage of water absorption of 0.3% or less to at least one part of the first recorded region to form a second recorded region.

Ink jet recording method and ink set

An ink jet recording method according to the invention includes attaching a reaction liquid including a reactant for aggregating or thickening a coloring ink component including a coloring material to a recording medium; attaching the coloring ink by an ink jet method to an area where the reaction liquid is attached, in a state where a residual rate of a volatile component of the reaction liquid attached on the recording medium is 25% by mass or more after attaching of the reaction liquid; and attaching a clear ink including a resin to the area where the coloring ink is attached.

Ink jet recording method and ink jet recording apparatus

An ink set which is used for sublimation transfer includes a first ink, and a second ink. The first ink has a color after transfer of |a*|&#x2264;10 and |b*|&#x2264;10 in a CIELAB color space, and contains a first disperse dye dispersed by a first dispersion resin. The second ink has a color after transfer of |a*|&#x3e;10 or |b*|&#x3e;10 in the CIELAB color space, and contains a second disperse dye dispersed by a second dispersion resin. A glass transition temperature of the first dispersion resin and is different than that of the second dispersion resin.

Ink set and recording method

The ink jet recording method according to the present invention includes attaching a resin liquid including a resin to a recording medium; attaching a reaction liquid including a reactant for aggregating or thickening a coloring ink component having a coloring material to an area where the resin liquid is attached; attaching the coloring ink to an area where the reaction liquid is attached by an ink jet method; and attaching a clear ink including a resin.

Provided is an ink jet recording method including: applying a reaction liquid to a recording medium by sending the reaction liquid from a reaction liquid container to a nozzle orifice in an ink jet head through a reaction liquid passage and discharging the reaction liquid from the nozzle orifice, the reaction liquid passage connecting the reaction liquid container to the nozzle orifice; and applying an ink composition to the recording medium by discharging the ink composition from a nozzle orifice in the ink jet head, the ink composition at least containing a color material. The reaction liquid contains a (meth)acrylic resin and a polyvalent metal salt, the polyvalent metal salt serving as a coagulating agent that is reactive with a component of the ink composition. At least one of materials that constitute the reaction liquid container and the reaction liquid passage and that make contact with the reaction liquid contains a C6 or higher aliphatic acid.

Provided is an orange ink composition for a sublimation transfer, which contains an aromatic compound having a specific structure.

Orange ink composition, ink set, method of manufacturing dyed product, and dyed product

An ink jet recording method includes attaching a reaction liquid and one or more ink jet ink compositions to a low-absorbing or non-absorbing recording medium, in which the reaction liquid contains a reactant which is a carboxylic acid or carboxylate that reacts with a component of the ink jet ink composition, the ink jet ink composition contains a resin and water, and when a deposition amount in an area in which the deposition amount of the resin is the greatest per unit area in a deposition area of the ink jet ink composition on the low-absorbing or non-absorbing recording medium is set to be 100%, the reaction liquid and the ink jet ink composition are deposited so that a mass ratio between the deposition amount of the resin and the deposition amount of the reactant (resin/reactant) in the deposition area in which the deposition amount of the resin is in a range of 20% to 100% is in a range of 1.5 to 16.

Ink jet recording method

Provided is a sublimation transfer ink set including a yellow ink composition containing a yellow dye; a magenta ink composition containing a magenta dye; a cyan ink composition containing a cyan dye; a first black ink composition; and a second black ink composition, in which the first black ink composition contains the yellow dye and the magenta dye, and the cyan dye, and the second black ink composition contains a C.I. disperse blue 360.

Sublimation transfer ink set, dyed product and manufacturing method thereof

There is provided an ink set including a water-based cleaning transportation liquid, and a disperse dye ink composition, in which the water-based cleaning transportation liquid includes water and at least one of an aromatic sulfonate formalin condensate and a lignin sulfonate as a dispersing agent I, without including a coloring material, and the disperse dye ink composition includes a disperse dye, water, and a dispersing agent II.

Ink set

An ink jet black ink composition for sublimation transfer includes water, a water-soluble organic solvent, C.I. Disperse Blue 360, and two or more disperse dyes that achieve a reflectance of less than 0.1 at a wavelength of 380 nm or more and 520 nm or less on a dyed article.

Ink jet black ink composition for sublimation transfer, and dyed article and method for producing dyed article

A ink composition for ink jet recording in which a non-absorbent or low absorbent recording medium is used includes water; a color material; a surfactant; a compound I represented by general formula (I) below; and does not substantially include alkyl polyols with a standard boiling point of 280&#xb0; C. or higher; in which the surfactant is at least one type selected from a group consisting of a fluorine-based surfactant and a siloxane-based surfactant with 5 or more siloxane units [In general formula (I), n represents an integer of 45 or higher to 230 or lower, each Rindependently represents an unmodified, an ether-modified, a polyester-modified, an epoxy-modified, an amine-modified, a carboxyl-modified, a fluorine-modified, an alkyloxy-modified, a mercapto-modified, a (meth)acryl-modified, a phenol-modified, a phenyl-modified, a carbinol-modified or an aralkyl-modified hydrocarbon group.].

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Shiojiri, Japan

Takeshi Yano