Riso Kagaku Corporation

Akiko Hayashi

Takahisa Yamazaki

Kokoro Kinoe

Shunsuke Uozumi

Mamoru Fukuda

Yuki Urano

Tetsuya Shiraishi

Yoshiaki Ishimaru

Yasuo Yamamoto

Hiroshi Sugitani

Yoshifumi Watanabe

Asayo Nishimura

Shinsuke Ozawa

Mamoru Saito

Sayako Arai

Hiroyuki Ogawa

Hirotaka Yamamoto

Ami Terakado

Takashi Saito

Sayako Nakao

Takumi Matsuda

Ryo Shinotsuka

Takeshi Koyama

A method for producing a printed textile item, the method including applying a treatment liquid containing an aggregating agent to a fabric using an inkjet method, applying a white ink having a charge density of at least 30 μeq/g, using a step of using an inkjet method and a wet-on-wet method, to the fabric to which the treatment liquid has been applied, applying a color ink for which the Young's modulus of the dried coating film is not more than 3.0 MPa, using an inkjet method and a wet-on-wet method, to the fabric to which the white ink has been applied.

Method for producing printed textile item

A method for producing a printed textile item is disclosed, the method including applying a pretreatment liquid containing a coagulant, water and a surfactant to a fabric, and, after the application of the pretreatment liquid, applying a white ink containing a white pigment and water to the fabric by an inkjet method, wherein a surface tension of the white ink at 0.05 Hz is within a range from 33 to 39 mN/m, a surface tension of the white ink at 10 Hz is 40 mN/m or greater, a specific gravity of the pretreatment liquid is greater than a specific gravity of the white ink, and the application of the white ink is performed within 100 seconds from the application of the pretreatment liquid and by a wet-on-wet method.

A method for producing printed matter that includes applying one of a first pretreatment liquid and a second pretreatment liquid, the other of the first pretreatment liquid and the second pretreatment liquid, and then an aqueous ink, in this order, to a recording region of a substrate using an inkjet recording apparatus, wherein the first pretreatment liquid and the second pretreatment liquid are jetted so as to land on the substrate in a fixed order, the first pretreatment liquid contains a coagulant, and the second pretreatment liquid does not contain a coagulant, but contains a penetrant.

Method for producing printed matter

A method for producing printed matter is disclosed that includes applying a pretreatment liquid containing a resin and a pretreatment liquid containing a coagulant to a substrate, and after the applying of these pretreatment liquids, applying an aqueous inkjet ink to the substrate using an inkjet system.

An ink for inkjet textile printing is disclosed that contains a pigment, a water-dispersible urethane resin having a film elongation of 600% to 2,000%, a water-soluble organic solvent and water, wherein the weight ratio between the pigment and the water-dispersible urethane resin is from 1:3 to 1:16. An ink set and a method for producing a printed item are also disclosed.

Ink for inkjet textile printing, ink set, and method for producing printed item

An aqueous pigment ink for textile inkjet printing is disclosed that contains a pigment, a first water-dispersible resin, a second water-dispersible resin and water, wherein the first water-dispersible resin is at least one resin selected from the group consisting of a water-dispersible urethane resin, a water-dispersible (meth)acrylic resin and a water-dispersible styrene/(meth)acrylic resin, the second water-dispersible resin is a water-dispersible polyester resin, the total amount of the first water-dispersible resin and the second water-dispersible resin is from 2 to 18% by mass relative to the total mass of the ink, and the mass ratio of the second water-dispersible resin relative to the first water-dispersible resin (second water-dispersible resin/first water-dispersible resin) is from 0.1 to 5.0. A method for producing a printed textile item and an ink set are also disclosed.

Aqueous pigment ink for textile inkjet printing, method for producing printed textile item, and ink set

A pretreatment liquid for inkjet textile printing is disclosed that includes water and a cellulose-based polymer having a weight average molecular weight of at least 50,000. A method for producing a printed textile item and an ink set for inkjet textile printing are also disclosed.

Pretreatment liquid for inkjet textile printing, method for producing printed textile item, and ink set for inkjet textile printing

An aqueous inkjet ink is disclosed which contains a colorant, a polyoxyethylene monoallyl ether, and water.

Aqueous inkjet ink and method for producing printed item

An aqueous inkjet ink is disclosed which contains water, a polyoxyethylene polyglyceryl ether and a colorant, wherein a ratio (B/A) of the total number (B) of hydroxyl groups within a molecule of the polyoxyethylene polyglyceryl ether relative to the weight average molecular weight (A) of the polyoxyethylene polyglyceryl ether is within a range from 0.002 to 0.012.

Aqueous inkjet ink and method for manufacturing printed article

The present invention discloses a method for producing a decorative article which includes a step of performing inkjet printing onto the surface of a humidity-conditioning base material using an aqueous inkjet ink containing at least water, a water-dispersible resin and a colorant, and also discloses a device for producing the decorative article.

Method and device for producing decorative article, and decorative article

A duplex printing machineincludes an inkjet headwith a piezoelectric element set for vibrations to propel out droplets of aqueous ink, an inkbottlefor supplying aqueous inkto the inkjet head, a system of ink lineshaving a lower tank, a circulation pump, a filter, and an upper tank, a degasserhaving a degassing pumpfor degassing flux of aqueous inkbeing to be supplied to the inkjet head, and a controlleroperable to control the degassing pump, the controllerbeing adapted to operate, as a print time calculated from an image data set of a print job is equal to or greater than a prescribed value, for driving the degassing pumpto degas flux of aqueous ink

Printing machine

An inkjet aqueous ink that prevents paper deformation and exhibits superior print quality and latency. The inkjet aqueous ink contains not less than 15% by mass and not more than 40% by mass of a polyglycerol having an average polymerization degree of 4 or greater, not less than 5% by mass and not more than 20% by mass of at least one of 1,3-propanediol and diethylene glycol monoethyl ether, and not less than 40% by mass and not more than 60% by mass of water.

Inkjet aqueous ink and printed item

An aqueous ink for an inkjet is provided, including: a pigment; a water-soluble organic solvent A including at least one of a diglycerol and a polyglycerol; a water-soluble organic solvent B including a polyethylene glycol monoalkyl ether represented by formula (1): RO&#x2014;(CHCHO)&#x2014;H where R represents an alkyl group having from 4 to 6 carbon atoms, and n represents an integer from 4 to 6; and water

Aqueous ink for inkjet

A photo-polymerizable ink-jet ink composition comprises a photo-polymerizable resin consisting of photo-polymerizable monomers, a photo-polymerization initiator, and a coloring material and is substantially free from a solvent. The photo-polymerizable monomers contain a hexa-functional monomer in a proportion falling within the range of 10% by weight to 30% by weight with respect to a total amount of the ink composition. The photo-polymerizable monomer other than the hexa-functional monomer is selected from the group consisting of a bi-functional monomer, a combination of a bi-functional monomer and a mono-functional monomer, a combination of a bi-functional monomer and a tri-functional monomer, and a combination of a bi-functional monomer, a mono-functional monomer, and a tri-functional monomer.

Photo-polymerizable ink-jet ink composition

A cationically polymerizable composition is provided, which comprises a cationically polymerizable compound, a cationic polymerization initiator, and a specific tertiary alkanolamine or tertiary alkylamine. The cationically polymerizable compound is preferably an alicyclic epoxy compound and an oxetane compound. The above amine accounts for 0.01 to 1.0% by weight, preferably 0.05 to 0.5% by weight of the total of the cationically polymerizable composition and the cationic polymerization initiator accounts for 0.1 to 20 parts by weight based on 100 parts by weight of the cationically polymerizable compound. The composition is excellent in storage stability and dispersion stability of colorants contained therein.

Growing community of inventors

Ibaraki, Japan

Akiko Hayashi