Patents by Inventor Mitsuyoshi Tamura
Mitsuyoshi Tamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240191091Abstract: A nonaqueous ink composition which contains an organic solvent and is to be ejected by means of an inkjet method, wherein the organic solvent contains an amide solvent and an organic solvent that is represented by the formula below. [Chem. 1] R1—(—O—R2—)n-OH??(1): (In formula (1), R1 represents an alkyl group having 6 or less carbon atoms; R2 represents an ethylene group or a propylene group; and n represents an integer of 2 to 6.Type: ApplicationFiled: March 31, 2022Publication date: June 13, 2024Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Keishiro YOSHIMORI, Yuka ORIKASA, Kisei MATSUMOTO, Koujun UTAKA, Mitsuyoshi TAMURA
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Publication number: 20240174876Abstract: A nonaqueous ink composition to be ejected by means of an inkjet method, the nonaqueous ink composition containing a pigment, a pigment dispersant and an organic solvent, wherein: the pigment contains at least one of a pigment A1 represented by formula (1-1), a pigment A2 represented by formula (1-2) and a halogenated phthalocyanine pigment A3; and the pH values of the pigment A1 and the pigment A2 are within the range of 3 to 9.Type: ApplicationFiled: March 31, 2022Publication date: May 30, 2024Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Yuka ORIKASA, Keishiro YOSHIMORI, Kisei MATSUMOTO, Koujun UTAKA, Mitsuyoshi TAMURA
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NONAQUEOUS INK COMPOSITION, AND RECORDING METHOD AND RECORDED MATTER MANUFACTURING METHOD USING SAME
Publication number: 20230365826Abstract: A nonaqueous ink composition contains organic solvents. The organic solvents include an organic solvent (a) and an organic solvent (b). Organic solvent (a): Glycol ether dialkyl. Organic solvent (b): At least one selected from the group consisting of alkylamide-based solvents (b1), cyclic amide-based solvents (b2), and lactone-based solvents (b3) each having a ring including six or more members.Type: ApplicationFiled: September 30, 2021Publication date: November 16, 2023Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Keishiro YOSHIMORI, Yuka ORIKASA, Kisei MATSUMOTO, Koujun UTAKA, Mitsuyoshi TAMURA, Mitsuteru YAMADA, Ryouhei OKA, Yoshiya MAEGAWA -
Publication number: 20230340287Abstract: A recording method for discharging, onto the surface of a substrate, an inkjet ink composition containing an organic solvent by using an inkjet head provided with constituent members bonded by a cured product of an adhesive, the organic solvent containing the following organic solvent (a). Organic solvent (a): at least one substance selected from the group consisting of alkylamide-based solvents (a1), cyclic amide-based solvents (a2), and lactone-based solvents (a3).Type: ApplicationFiled: September 30, 2021Publication date: October 26, 2023Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Keishiro YOSHIMORI, Yuka ORIKASA, Kisei MATSUMOTO, Koujun UTAKA, Mitsuyoshi TAMURA, Fumie YAMAZAKI, Naoki SHIRAISHI
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Patent number: 8841356Abstract: Disclosed is an ink composition which has superior storage stability, is resistant to bleeding, has good fixability to paper, and enables printing of a clear image. The ink composition includes a pigment dispersion containing a surface-treated pigment and a resin emulsion, wherein the surface-treated pigment is obtained by binding a functional group, having a larger calcium index than a calcium index of 1,2,3-benzenetricarboxylic acid, to the surface of a pigment; and the resin emulsion is adapted so that an aqueous solution containing 1 mass % of a solid content of the resin emulsion has a conductance of 300 ?S/cm or less.Type: GrantFiled: September 30, 2010Date of Patent: September 23, 2014Assignee: DNP Fine Chemicals Co., Ltd.Inventors: Satoshi Shioda, Tatsuro Ishitobi, Takao Otomaru, Rumiko Matsuo, Masaki Inumaru, Yukio Sugita, Fumie Yamazaki, Naoki Shiraishi, Mitsuyoshi Tamura, Ataru Miyata
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Patent number: 8814335Abstract: An inkjet recording method characterized by adhering a receiving solution (A) to at least areas on a recording medium (R) which are to be printed with an inkjet ink (I) or the whole surface of the medium (R) which is to be printed, said receiving solution (A) being a solution obtained by dissolving (inclusive of dispersing) one or more metal salts (S) selected from among at least divalent, calcium salts, magnesium salts, nickel salts, aluminum salts, boron salts, and zinc salts and one or more resins (B) having hydrophilic groups in an aqueous solvent in such amounts that the concentrations of the metal salts (S) and the resins (B) fall within the range of 0.005 to 2.0 mol/l and within the range of 0.5 to 20 mass % respectively, and then applying the inkjet ink (1) to areas where the metal salts are present in an adhered state to carry out printing.Type: GrantFiled: March 27, 2012Date of Patent: August 26, 2014Assignee: DNP Fine Chemicals Co., Ltd.Inventors: Masaki Inumaru, Takao Otomaru, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Naoki Shiraishi, Yoshiki Nozaka
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Publication number: 20140132661Abstract: Provided is an inkjet recording method which minimizes blur and achieves excellent fixing to a recoding medium. This inkjet recording method is characterized by adhering a receiving solution (A) to at least areas on a recording medium (R) which are to be printed with an inkjet ink (I) or the whole surface of the medium (R) which is to be printed, said receiving solution (A) being a solution obtained by dissolving (inclusive of dispersing) one or more metal salts (S) selected from among at least divalent, calcium salts, magnesium salts, nickel salts, aluminum salts, boron salts, and zinc salts and one or more resins (B) having hydrophilic groups in an aqueous solvent in such amounts that the concentrations of the metal salts (S) and the resins (B) fall within the range of 0.005 to 2.0 mol/l and within the range of 0.5 to 20 mass % respectively, and then applying the inkjet ink (I) to areas where the metal salts are present in an adhered state to carry out printing.Type: ApplicationFiled: March 27, 2012Publication date: May 15, 2014Applicants: DNP FINE CHEMICALS CO., LTD., DAI NIPPON PRINTING CO., LTD.Inventors: Yoshiki NOZAKA, Fumie YAMAZAKI, Mitsuyoshi TAMURA, Yukio SUGITA, Takao OTOMARU, Masaki INUMARU, Naoki SHIRAISHI
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Publication number: 20140055520Abstract: An inkjet recording method which suppresses feathering and color bleeding and is excellent in fixability to a recording medium. The inkjet recording method includes the steps of applying an ink-receiving solution prepared by dissolving in an aqueous solvent at least one metal salt having a water solubility of 0.1 mol/l or more, selected from calcium salts, magnesium salts, nickel salts and zinc salts having a valence of 2 or more, to at least the surface to be printed by using an inkjet ink or the entire surface of a recording medium; and printing on the metal salt adhered part by using the inkjet ink comprising at least a pigment, a resin emulsion and an aqueous solvent containing a surfactant. Further, a phosphorus-containing group having at least one P—O or P?O bond is bound to the surface of the pigment.Type: ApplicationFiled: December 26, 2011Publication date: February 27, 2014Applicants: DNP FINE CHEMICALS CO., LTD., DAI NIPPON PRINTING CO., LTD.Inventors: Masaki Inumaru, Satoshi Shioda, Takao Otomaru, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Naoki Shiraishi
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Patent number: 8557032Abstract: The object of the invention is to provide an inkjet recording oil green ink composition that excels more in terms of all the quality of prints, stability on printing, the ability of prints to be dried, and ink storage stability, and is capable of making wider a color reproduction area expressed by yellow and cyan. The inkjet recording oil green ink composition contains as an organic green pigment coloring agent C. I. Pigment Green 58 comprising a (poly) halogenated zinc phthalocyanine. The invention also provides an ink set comprises the inventive oil green ink composition and further includes at least an oil yellow ink composition and an oil cyan ink composition.Type: GrantFiled: March 24, 2009Date of Patent: October 15, 2013Assignee: The Inctec Inc.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada, Naoki Shiraishi
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Patent number: 8440744Abstract: The present invention is proposed is an oil-based white ink composition for ink jet recording, comprising a white pigment, a glycol ether dialkyl ether compound solvent, a polymeric dispersant, and a specific acrylic resin. The white pigment is formed of titanium oxide fine particles having an average particle diameter of not less than 0.15 ?m and not more than 0.25 ?m and coated with at least one of aluminum oxide and silicon oxide. The white pigment is further coated with not less than 0.01% by mass and not more than 2.5% by mass of at least one of an SiH-containing polysiloxane and dimethylpolysiloxane.Type: GrantFiled: March 26, 2008Date of Patent: May 14, 2013Assignee: The Inctec Inc.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Mitsuteru Yamada, Fumie Yamazaki, Tamayo Okahira
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Publication number: 20120308786Abstract: Disclosed is an ink composition which has superior storage stability, is resistant to bleeding, has good fixability to paper, and enables printing of a clear image. The ink composition includes a pigment dispersion containing a surface-treated pigment and a resin emulsion, wherein the surface-treated pigment is obtained by binding a functional group, having a larger calcium index than a calcium index of 1,2,3-benzenetricarboxylic acid, to the surface of a pigment; and the resin emulsion is adapted so that an aqueous solution containing 1 mass % of a solid content of the resin emulsion has a conductance of 300 ?S/cm or less.Type: ApplicationFiled: September 30, 2010Publication date: December 6, 2012Inventors: Satoshi Shioda, Tatsuro Ishitobi, Takao Otomaru, Rumiko Matsuo, Eiichi Miyata, Ataru Miyata, Masaki Inumaru, Yukio Sugita, Fumie Yamazaki, Naoki Shiraishi, Mitsuyoshi Tamura
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Patent number: 8008368Abstract: An oil-based ink composition for inkjet recording capable of exhibiting desired properties of drying after print, rubfastness and re-solubility is achieved by performing solubilization on an acrylic resin which is not easily dissolved conventionally. The oil-based ink composition for inkjet printing comprises glycol ether dialkyl ethers as a prime solvent; and an acrylic resin that results from solution polymerization in a solvent of the glycol ether dialkyl ethers by use of a radical polymerization initiator.Type: GrantFiled: December 21, 2006Date of Patent: August 30, 2011Assignees: Seiko Epson Corporation, The Inctec Inc.Inventors: Seiji Mochizuki, Makoto Otsuki, Masahiro Nakamura, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Tamayo Okahira
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Patent number: 7886581Abstract: The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.Type: GrantFiled: October 16, 2007Date of Patent: February 15, 2011Assignees: Seiko Epson Corporation, The Inctec Inc.Inventors: Takashi Kozuchi, Kazuhiko Hara, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada
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Publication number: 20110034596Abstract: The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.Type: ApplicationFiled: October 25, 2010Publication date: February 10, 2011Applicants: SEIKO EPSON CORPORATION, THE INCTEC INC.Inventors: Takashi KOZUCHI, Kazuhiko HARA, Yukio SUGITA, Mitsuyoshi TAMURA, Fumie YAMAZAKI, Mitsuteru YAMADA
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Patent number: 7806972Abstract: The object of the invention is to provide an oil ink set capable of obtaining images having high color reproduction capabilities and high color saturation in particular. The oil ink set of the invention comprises a firsts a second, and a third oil ink having a wavelength region in which the reflectivity of each oil ink on a recording medium changes from 80% to 5% in the wavelength range of 400 nm to 700 nm. In this wavelength region, the reflectivity of the first oil ink is continuously higher than that of the first oil ink, and in the wavelength in which the reflectivity of the second oil ink changes from 80% to 5%, the reflectivity of the third oil ink is continuously higher than that of the second oil ink. Moreover, the coloring materials in the first, the second and the third oil inks are all different.Type: GrantFiled: March 24, 2009Date of Patent: October 5, 2010Assignee: The Intec Inc.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada, Naoki Shiraishi
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Patent number: 7754784Abstract: An oil-based ink composition for inkjet printers contains a fixing polymer and a solvent represented by the following formula (1): wherein X1 represents an alkyl group, X2 represents a hydrogen atom or alkyl group, and n stands for an integer of from 1 to 4. The fixing polymer is an acrylic polymer obtained by subjecting an acrylic monomer to solution polymerization with a radical polymerization initiator in the solvent. A production process of the oil-based ink composition is also disclosed.Type: GrantFiled: April 26, 2007Date of Patent: July 13, 2010Assignee: The Inctec Inc.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Mitsuteru Yamada, Tamayo Okahira
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Publication number: 20100174013Abstract: The inventive oil base ink composition for ink jet recording has a binder resin, a dispersant and at least C.I. Pigment Yellow 213 as an organic pigment contained in an organic solvent comprising a specific polyalkylene glycol dialkyl ether and a specific cyclic ester, and having a boiling point of 150° C. to 280° C. This ink composition is highly safe for the human body, ensures that print quality is maintained over extended periods of time, and is improved in weather resistance.Type: ApplicationFiled: June 11, 2008Publication date: July 8, 2010Applicant: THE INCTEC INC.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Mitsuteru Yamada, Fumie Yamazaki
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Publication number: 20100105807Abstract: The present invention is proposed is an oil-based white ink composition for ink jet recording, comprising a white pigment, a glycol ether dialkyl ether compound solvent, a polymeric dispersant, and a specific acrylic resin. The white pigment is formed of titanium oxide fine particles having an average particle diameter of not less than 0.15 ?m and not more than 0.25 ?m and coated with at least one of aluminum oxide and silicon oxide. The white pigment is further coated with not less than 0.01% by mass and not more than 2.5% by mass of at least one of an SiH-containing polysiloxane and dimethylpolysiloxane.Type: ApplicationFiled: March 26, 2008Publication date: April 29, 2010Applicant: The Inctec Inc.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Mitsuteru Yamada, Fumie Yamazaki, Tamayo Okahira
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Publication number: 20090235843Abstract: The object of the invention is to provide an oil ink set capable of obtaining images having high color reproduction capabilities and high color saturation in particular. The oil ink set of the invention comprises a firsts a second, and a third oil ink having a wavelength region in which the reflectivity of each oil ink on a recording medium changes from 80% to 5% in the wavelength range of 400 nm to 700 nm. In this wavelength region, the reflectivity of the first oil ink is continuously higher than that of the first oil ink, and in the wavelength in which the reflectivity of the second oil ink changes from 80% to 5%, the reflectivity of the third oil ink is continuously higher than that of the second oil ink. Moreover, the coloring materials in the first, the second and the third oil inks are all different.Type: ApplicationFiled: March 24, 2009Publication date: September 24, 2009Applicant: THE INCTEC INC.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada, Naoki Shiraishi
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Publication number: 20090239980Abstract: The object of the invention is to provide an inkjet recording oil green ink composition that excels more in terms of all the quality of prints, stability on printing, the ability of prints to be dried, and ink storage stability, and is capable of making wider a color reproduction area expressed by yellow and cyan. The inkjet recording oil green ink composition contains as an organic green pigment coloring agent C. I. Pigment Green 58 comprising a (poly) halogenated zinc phthalocyanine. The invention also provides an ink set comprises the inventive oil green ink composition and further includes at least an oil yellow ink composition and an oil cyan ink composition.Type: ApplicationFiled: March 24, 2009Publication date: September 24, 2009Applicant: THE INCTEC INC.Inventors: Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada, Naoki Shiraishi