Patents by Inventor Okinori NAKASHIMA

Okinori NAKASHIMA 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).

  • Publication number: 20210155813
    Abstract: An object is to obtain a photocurable inkjet printing ink composition that demonstrates excellent preservation stability and discharge stability, good adhesion, bending tolerance property, and tackiness, and high hardness. As a solution, a photocurable inkjet printing ink composition containing photopolymerizable compounds and photopolymerization initiator is provided, wherein the photocurable inkjet printing ink composition satisfies the requirements of A to E: A. 3,3,5-trimethyl cyclohexyl acrylate is contained by 5 to 50 percent by mass in all photopolymerizable compounds; B. multifunctional monomers and/or multifunctional oligomers of 10° C. or lower in glass transition temperature are contained by 1 to 15 percent by mass in all photopolymerizable compounds; C. monofunctional monomers are contained by a total of 40 percent by mass or more in all photopolymerizable compounds; D. amino group and/or amide group-containing monomers and/or oligomers are contained; and E.
    Type: Application
    Filed: April 1, 2019
    Publication date: May 27, 2021
    Inventors: Okinori NAKASHIMA, Takuya MYOSE, Kazuhiro FUKE, Yuki YOSHIDA
  • Publication number: 20210040337
    Abstract: A continuous-type inkjet ink composition includes a polyvinyl butyral resin (Resin 1) and a rosin ester resin (Resin 2), and organic solvents, wherein the content of Resin 1 in the inkjet ink composition is 1.0 to 8.0 percent by mass, and the content ratio of Resin 1 and Resin 2 satisfies “Resin 1:Resin 2=20:1 to 10:8” based on ratio by mass, and the total quantity of organic solvents regulated by industrial health and safety regulation is 5 percent by mass or less in the inkjet ink composition. The composition demonstrates excellent discharge stability and jetting property as well as excellent adhesion to various types of base printing materials including polyolefin films with no surface treatment.
    Type: Application
    Filed: November 16, 2018
    Publication date: February 11, 2021
    Inventors: Jun KINJOH, Okinori NAKASHIMA, Koki OGASAHARA
  • Publication number: 20210024762
    Abstract: An object is to obtain a photocurable inkjet printing ink composition that demonstrates excellent preservation stability and discharge property, while also presenting curability under ultraviolet light from a light-emitting diode (LED) light source, as well as good adhesion, flexibility and tackiness. As a solution, a photocurable inkjet printing ink composition containing photopolymerizable compounds and photopolymerization initiator is provided, wherein the photocurable inkjet printing ink composition satisfies A to D: A. 2-(allyloxy methyl) methyl acrylate is contained by 5 to 40 percent by mass in all photopolymerizable compounds; B. multifunctional monomers and/or multifunctional oligomers of 0° C. or lower in glass transition temperature are contained by 5 to 20 percent by mass in all photopolymerizable compounds; C. amino group and/or amide group-containing monomers and/or oligomers are contained; and D. the ink composition has a viscosity of 30 mPa·s or lower at 25° C.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 28, 2021
    Inventors: Okinori NAKASHIMA, Takuya MYOSE, Kazuhiro FUKE, Ryoichi NITTA
  • Patent number: 10899941
    Abstract: An object of the invention is to provide a yellow ink composition for nonaqueous inkjet that achieves excellent density and weather resistance on printed matters whose printing surface is constituted by a polyvinyl chloride polymer, ethylene-vinyl acetate copolymer, or other vinyl polymer or the like, while also ensuring excellent discharge stability, even in a high-speed printing mode. To this end, a yellow ink composition for nonaqueous inkjet is provided that contains, as the pigment, C. I. Pigment Yellow 150 and C. I. Pigment Yellow 83 at a ratio by mass, calculated by “C. I. Pigment Yellow 150/C. I. Pigment Yellow 83,” of 5/5 to 9/1, and further contains a pigment dispersant, a resin, and an organic solvent.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 26, 2021
    Assignee: SAKATA INX CORPORATION
    Inventors: Okinori Nakashima, Yoshiyuki Aoki, Jun Kinjyo, Ryohei Miyake
  • Patent number: 10767067
    Abstract: An object is to provide a non-aqueous inkjet ink composition which offers excellent fine print reproducibility, solid fill property, and anti-mottling property on printed matters, even when it is printed, at high speed, on materials whose printing surface is constituted by a polyvinyl chloride polymer, ethylene-vinyl acetate copolymer, or other vinyl polymer, etc., and which also offers excellent rub resistance, solvent resistance, discharge stability, and resolubility of dried coating film, and has a high flash point. To achieve the object, a non-aqueous inkjet ink composition is provided which contains an acrylic resin, a ketone resin, a pigment, and a pigment dispersant, as well as propylene carbonate and diethylene glycol alkyl ether as an organic solvent.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: September 8, 2020
    Assignee: SAKATA INX CORPORATION
    Inventors: Okinori Nakashima, Yoshiyuki Aoki, Jun Kinjyo, Ryohei Miyake
  • Patent number: 10767068
    Abstract: A photocurable inkjet printing ink composition contains a photopolymerizable compound and a photopolymerization initiator, wherein in 100 percent by mass of the photocurable inkjet printing ink composition, included are: an acrylamide-based monomer by 5.0 to 50 percent by mass; a monofunctional monomer other than acrylamide-based monomer by 15 to 70 percent by mass; a polymerizable compound having two or more functionalities by 5.0 to 30.0 percent by mass; vinyl caprolactam by 0.1 to 15 percent by mass and/or an acrylated amine compound having two photopolymerizable functional groups and two amino groups in the molecule by 0 to 10 percent by mass; and the percentage of monofunctional monomers in the photopolymerizable compound is 60 to 99.5 percent by mass.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: September 8, 2020
    Assignee: SAKATA INX CORPORATION
    Inventors: Okinori Nakashima, Takuya Myose, Takuya Okamoto, Kazuhiro Fuke
  • Patent number: 10767065
    Abstract: An object is to provide a non-aqueous inkjet ink composition offering excellent wettability, fixing property, solid-fill property, anti-mottling property, as well as discharge stability, even when printed at high speed on a matter to be printed whose printing side is constituted by a polyvinyl chloride or ethylene-vinyl acetate copolymer or other vinyl polymer, etc. As means for achieving the object, a non-aqueous inkjet ink composition containing an acrylic resin, a pigment, a pigment dispersant, and an organic solvent, is provided, wherein such non-aqueous inkjet ink composition is characterized by containing, as the organic solvent, a propylene carbonate and a diethylene glycol dialkyl ether, wherein the propylene carbonate is compounded by 5 to 25 percent by mass in the ink composition, while the diethylene glycol dialkyl ether is compounded in a manner providing a ratio of diethylene glycol dialkyl ether/propylene carbonate falls in a range of 3 to 8.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: September 8, 2020
    Assignee: SAKATA INX CORPORATION
    Inventors: Yoichi Sato, Okinori Nakashima, Yoshiyuki Aoki, Jun Kinjyo, Takuya Okamoto
  • Patent number: 10683428
    Abstract: A non-aqueous magenta ink composition for ink jet printing comprising a pigment, a pigment dispersant, a binder resin and an organic solvent, wherein the pigment comprises C.I. Pigment Red 254 and a red pigment having a quinacridone skeleton, and wherein a total amount of the C.I. Pigment Red 254 and the red pigment having a quinacridone skeleton is not less than 50% by mass in the pigment.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: June 16, 2020
    Assignee: SAKATA INX CORPORATION
    Inventors: Jun Kinjoh, Okinori Nakashima, Yoshiyuki Aoki, Ryohei Miyake
  • Publication number: 20200148903
    Abstract: An object is to provide an ink composition for inkjet printing that permits inkjet printing, particularly on metal surfaces, wherein such ink composition possesses sufficiently high adhesion and heat resistance with respect to metal surfaces. As a means for achieving the object, a photocurable inkjet printing ink composition is provided, which contains, relative to the entire ink composition, 0.1 percent by mass or more of an acid-modified acrylic monomer and 10 to 30 percent by mass of a monofunctional monomer with a Tg of 100° C. or above, wherein the monofunctional monomer accounts for 80 percent by mass or more of all monomers.
    Type: Application
    Filed: July 3, 2018
    Publication date: May 14, 2020
    Inventors: Yoichi SATO, Okinori NAKASHIMA, Takuya MYOSE
  • Patent number: 10584253
    Abstract: A light-curable inkjet printing ink composition contains a light-polymerizable component and a light-polymerization initiator, where the light-curable inkjet printing ink composition contains 70 to 100 percent by mass of monofunctional monomers relative to the total mass of the light-polymerizable component; wherein the monofunctional monomers comprise: (A) a monofunctional monomer whose homopolymer has a glass transition temperature of 20° C. or above; and (B) a monofunctional monomer whose homopolymer has a glass transition temperature of below 20° C.; and (A) is contained by 30 to 90 percent by mass, while (B) is contained by 10 to 70 percent by mass, relative to the total mass of the light-polymerizable component.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: March 10, 2020
    Assignee: SAKATA INX CORPORATION
    Inventors: Yoichi Sato, Okinori Nakashima, Takuya Myose, Kazuhiro Fuke
  • Publication number: 20200002556
    Abstract: A photocurable inkjet printing ink composition contains (A) to (C) below: (A) a chlorinated polyolefin; (B) monofunctional monomer 1 with a glass transition temperature (Tg) of 0° C. or below; and (C) monofunctional monomer 2 with a glass transition temperature (Tg) of 60° C. or above; wherein the content of (A) in the ink composition is 0.2 percent by mass or higher; the total content of (B) and (C) in the ink composition is 40 percent by mass or higher; and the mass-based ratio of the content of (C) and that of (B), or (C)/(B), is 0.80 to 3.00. The composition makes inkjet printing possible on the surfaces of molded products of polyolefins.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 2, 2020
    Inventors: Yoichi SATO, Okinori NAKASHIMA, Takuya MYOSE, Jun KAWABATA
  • Publication number: 20190284415
    Abstract: A nonaqueous inkjet ink composition contains a pigment, pigment dispersant, and an organic solvent, wherein the organic solvent contains a diethylene glycol alkyl ether acetate and a diethylene glycol dialkyl ether; the total content of the diethylene glycol alkyl ether acetate and diethylene glycol dialkyl ether accounts for 40 to 80 parts by mass per 100 parts by mass of the nonaqueous inkjet ink composition, wherein a ratio of diethylene glycol alkyl ether acetate/diethylene glycol dialkyl ether is 0.25 to 4.5. The nonaqueous inkjet ink composition can exhibit excellent fine print reproducibility, solid fill property, and anti-mottling property, as well as superior discharge stability and resolubility of dried coating film, on printing targets whose printing surface is constituted by polyvinyl chloride, ethylene-vinyl acetate copolymer, or other vinyl polymer, etc., even under high-speed printing.
    Type: Application
    Filed: December 7, 2017
    Publication date: September 19, 2019
    Inventors: Yoshiyuki AOKI, Okinori NAKASHIMA, Jun KINJYO, Ryohei MIYAKE
  • Patent number: 10385225
    Abstract: A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: August 20, 2019
    Assignee: SAKATA INX CORPORATION
    Inventors: Yoichi Sato, Okinori Nakashima, Yoshiyuki Aoki, Jun Kinjyo, Ryohei Miyake
  • Publication number: 20190177563
    Abstract: An object of the invention is to provide a yellow ink composition for nonaqueous inkjet that achieves excellent density and weather resistance on printed matters whose printing surface is constituted by a polyvinyl chloride polymer, ethylene-vinyl acetate copolymer, or other vinyl polymer or the like, while also ensuring excellent discharge stability, even in a high-speed printing mode. To this end, a yellow ink composition for nonaqueous inkjet is provided that contains, as the pigment, C. I. Pigment Yellow 150 and C. I. Pigment Yellow 83 at a ratio by mass, calculated by “C. I. Pigment Yellow 150/C. I. Pigment Yellow 83,” of 5/5 to 9/1, and further contains a pigment dispersant, a resin, and an organic solvent.
    Type: Application
    Filed: July 14, 2017
    Publication date: June 13, 2019
    Inventors: Okinori NAKASHIMA, Yoshiyuki AOKI, Jun KINJYO, Ryohei MIYAKE
  • Publication number: 20190169454
    Abstract: Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.
    Type: Application
    Filed: June 30, 2017
    Publication date: June 6, 2019
    Inventors: Okinori NAKASHIMA, Takuya MYOSE, Takuya OKAMOTO, Kazuhiro FUKE, Ryoichi NITTA
  • Publication number: 20190161632
    Abstract: A non-aqueous inkjet orange ink composition includes a pigment, a pigment dispersant, and an organic solvent, wherein the pigment contains C.I. Pigment Orange 36 and at least one type of pigment selected from C.I. Pigment Red 242, C.I. Pigment Red 254, and C.I. Pigment Orange 71. The non-aqueous inkjet orange ink composition can offer high weather resistance, good color development property, and excellent dispersion stability, as well as an ink set using such ink composition.
    Type: Application
    Filed: January 12, 2017
    Publication date: May 30, 2019
    Inventors: Yoichi SATO, Okinori NAKASHIMA, Yoshiyuki AOKI, Jun KINJYO, Ryohei MIYAKE
  • Publication number: 20190161634
    Abstract: A non-aqueous magenta ink composition for ink jet printing comprising a pigment, a pigment dispersant, a binder resin and an organic solvent, wherein the pigment comprises C.I. Pigment Red 254 and a red pigment having a quinacridone skeleton, and wherein a total amount of the C.I. Pigment Red 254 and the red pigment having a quinacridone skeleton is not less than 50% by mass in the pigment.
    Type: Application
    Filed: April 13, 2017
    Publication date: May 30, 2019
    Applicant: SAKATA INX CORPORATION
    Inventors: Jun KINJOH, Okinori NAKASHIMA, Yoshiyuki AOKI, Ryohei MIYAKE
  • Publication number: 20190144694
    Abstract: An object is to provide a non-aqueous inkjet ink composition which offers excellent fine print reproducibility, solid fill property, and anti-mottling property on printed matters, even when it is printed, at high speed, on materials whose printing surface is constituted by a polyvinyl chloride polymer, ethylene-vinyl acetate copolymer, or other vinyl polymer, etc., and which also offers excellent rub resistance, solvent resistance, discharge stability, and resolubility of dried coating film, and has a high flash point. To achieve the object, a non-aqueous inkjet ink composition is provided which contains an acrylic resin, a ketone resin, a pigment, and a pigment dispersant, as well as propylene carbonate and diethylene glycol alkyl ether as an organic solvent.
    Type: Application
    Filed: February 23, 2017
    Publication date: May 16, 2019
    Inventors: Okinori NAKASHIMA, Yoshiyuki AOKI, Jun KINJYO, Ryohei MIYAKE
  • Publication number: 20190062580
    Abstract: A photocurable inkjet printing ink composition contains a photopolymerizable compound and a photopolymerization initiator, wherein in 100 percent by mass of the photocurable inkjet printing ink composition, included are: an acrylamide-based monomer by 5.0 to 50 percent by mass; a monofunctional monomer other than acrylamide-based monomer by 15 to 70 percent by mass; a polymerizable compound having two or more functionalities by 5.0 to 30.0 percent by mass; vinyl caprolactam by 0.1 to 15 percent by mass and/or an acrylated amine compound having two photopolymerizable functional groups and two amino groups in the molecule by 0 to 10 percent by mass; and the percentage of monofunctional monomers in the photopolymerizable compound is 60 to 99.5 percent by mass.
    Type: Application
    Filed: January 31, 2017
    Publication date: February 28, 2019
    Inventors: Okinori NAKASHIMA, Takuya MYOSE, Takuya OKAMOTO, Kazuhiro FUKE
  • Publication number: 20190031895
    Abstract: A light-curable inkjet printing ink composition contains a light-polymerizable component and a light-polymerization initiator, where the light-curable inkjet printing ink composition contains 70 to 100 percent by mass of monofunctional monomers relative to the total mass of the light-polymerizable component; wherein the monofunctional monomers comprise: (A) a monofunctional monomer whose homopolymer has a glass transition temperature of 20° C. or above; and (B) a monofunctional monomer whose homopolymer has a glass transition temperature of below 20° C.; and (A) is contained by 30 to 90 percent by mass, while (B) is contained by 10 to 70 percent by mass, relative to the total mass of the light-polymerizable component.
    Type: Application
    Filed: December 26, 2016
    Publication date: January 31, 2019
    Inventors: Yoichi SATO, Okinori NAKASHIMA, Takuya MYOSE, Kazuhiro FUKE