Patents by Inventor Kazuya Yoshimoto

Kazuya Yoshimoto 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: 20190235336
    Abstract: [Problem] An object is to reduce crosstalk.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 1, 2019
    Inventors: MASAKI UEHATA, KOHJI SAITOH, YASUKI MORI, KAZUYA KONDOH, KAZUHISA YOSHIMOTO, KOSUKE KAWAMOTO
  • Publication number: 20190164512
    Abstract: There is provided a source driver (video signal line drive circuit) using a charge sharing system that achieves lower power consumption than a conventional case. A short-circuiting circuit short-circuits source bus lines such that a sum of numbers assigned to two source bus lines forming each set in each group is equal for all sets when it is assumed that K consecutive source bus lines (K is an even number greater than or equal to 4) form one group and numbers from 1 to K are assigned to the K source bus lines. For example, with four consecutive source bus lines forming one group, in each group, the short-circuiting circuit short-circuits the first and fourth source bus lines and short-circuits the second and third source bus lines.
    Type: Application
    Filed: May 25, 2017
    Publication date: May 30, 2019
    Inventors: KOHJI SAITOH, KOSUKE KAWAMOTO, KAZUHISA YOSHIMOTO, KAZUYA KONDOH, MASAKI UEHATA, YASUKI MORI
  • Publication number: 20180236804
    Abstract: The present invention provides a photosensitive resin composition for a relief printing original plate which can achieve both of a printing reproducibility of gradation of a highlight part and a printing durability, and can further achieve a low plate surface tackiness. A photosensitive resin composition for a relief printing original plate containing water-soluble or water-dispersible polyamide, a photopolymerizable unsaturated compound and a photopolymerization initiator as essential ingredients, characterized in that a total of a content of an alicyclic structural unit obtained from diamine and a content of an alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 30 to 90 molar %, and the content of the alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 20 molar % or more.
    Type: Application
    Filed: August 2, 2016
    Publication date: August 23, 2018
    Applicant: TOYOBO CO., LTD.
    Inventors: Kazuya Yoshimoto, Atsushi Tatsuyama, Jun Hasuike
  • Patent number: 9937524
    Abstract: Provided is a method of manufacturing a flexographic printing plate with which it is possible to prevent plate surface contamination even in the printing for long time. A method for manufacturing a flexographic printing plate, characterized in that, a liquid containing an amino-modified silicone compound is made to contact with a flexographic printing plate containing a latex having gelation degree of not less than 50% by mass. Said latex occupies preferably not less than 30% by mass of the printing resin plate, and amino group equivalent of the amino-modified silicone compound is preferably not less than 500 g/mol.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 10, 2018
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kazuya Yoshimoto, Keiichi Motoi
  • Patent number: 9709888
    Abstract: A photosensitive resin composition for CTP flexographic printing original plate containing at least a hydrophobic polymer obtained from water-dispersible latex (A), a hydrophilic polymer (B), a photopolymerizable unsaturated compound (C), a photopolymerization initiator (D), and if necessary, rubber (E), characterized in that, the photopolymerizable unsaturated compound (C) comprises a photopolymerizable oligomer containing no hydroxyl group (C-1), a hydroxyl group-containing photopolymerizable monomer having a pentaerythritol skeleton, a dipentaerythritol skeleton or a glycerol skeleton (C-2) and, optionally, a photopolymerizable monomer containing no hydroxyl group (C-3). The content of the hydroxyl group-containing photopolymerizable monomer (C-2) is 1 to 20% by mass of the photosensitive resin composition. The content of the rubber (E) is preferably 0.5 to 15% by mass of the photosensitive resin composition.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: July 18, 2017
    Assignee: TOYOBO CO., LTD.
    Inventors: Hiroto Yamada, Yukimi Yawata, Kazuya Yoshimoto
  • Patent number: 9358771
    Abstract: A method is disclosed for producing a flexographic printing plate from a flexographic printing original plate provided with a photosensitive resin layer comprising a photosensitive resin composition containing at least (A) a hydrophobic polymer comprising a water-dispersible latex, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the method comprises a main exposure step, a development step and a post-exposure step, characterized in that a treatment solution containing a first amino-modified silicone having an amine equivalent of 1000 g/mol or less and a second amino-modified silicone having an amine equivalent of 3000 g/mol or more in a mass ratio of from 2.5:1 to 1:6 is contacted with the whole surface of the flexographic printing plate.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 7, 2016
    Assignee: TOYOBO CO., LTD.
    Inventors: Yukimi Yawata, Daiki Yoshioka, Kazuya Yoshimoto
  • Publication number: 20150336371
    Abstract: The present invention provides a method for producing a flexographic printing plate which has an ability to prevent plate surface contamination and a persistency of the effect thereof and which allows a high-quality printing in a large scale. There is disclosed a method for producing a flexographic printing plate from a flexographic printing original plate provided with a photosensitive resin layer comprising a photosensitive resin composition containing at least (A) a hydrophobic polymer comprising a water-dispersible latex, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the method comprises a main exposure step, a development step and a post-exposure step, characterized in that a treatment solution containing a first amino-modified silicone having an amine equivalent of 1000 g/mol or less and a second amino-modified silicone having an amine equivalent of 3000 g/mol or more in a mass ratio of from 2.
    Type: Application
    Filed: March 24, 2014
    Publication date: November 26, 2015
    Applicant: TOYOBO CO., LTD.
    Inventors: Yukimi Yawata, Daiki Yoshioka, Kazuya Yoshimoto
  • Patent number: 8991312
    Abstract: The present invention aims to provide a flexographic printing original plate where, although it is a flexible aqueous developing plate, reproducibility of fine lines is good. A flexographic printing original plate which is a photosensitive printing original plate where at least (A) a supporting member, (B) a photosensitive resin layer, (C) a protective layer for preventing the polymerization inhibition due to oxygen in the photosensitive resin layer and (D) a heat-sensitive mask layer are successively layered, characterized in that, the photosensitive resin layer (B) is a layer which is able to be developed by water, Young's modulus of the protective layer (C) is 4 MPa to 35 MPa, layer thickness of the protective layer (C) is 0.2 ?m to 2.0 ?m and Young's modulus (MPa) and layer thickness (?m) of the protective layer (C) satisfy the following formula 1: 1?(Young's modulus)×(Layer thickness)2?18??(Formula 1).
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: March 31, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Yasuyuki Munekuni, Keiichi Motoi, Yukimi Yawata, Toru Wada
  • Publication number: 20140370440
    Abstract: The present invention provides a CTP photosensitive flexographic printing original plate which causes no printing blur while the conventional printing durability, developing property and image-reproducing property are still maintained. A photosensitive resin composition for CTP flexographic printing original plate containing at least a hydrophobic polymer obtained from water-dispersible latex (A), a hydrophilic polymer (B), a photopolymerizable unsaturated compound (C), a photopolymerization initiator (D), and if necessary, rubber (E), characterized in that, the photopolymerizable unsaturated compound (C) comprises a photopolymerizable oligomer containing no hydroxyl group (C-1), a hydroxyl group-containing photopolymerizable monomer having a pentaerythritol skeleton, a dipentaerythritol skeleton or a glycerol skeleton (C-2) and, optionally, a photopolymerizable monomer containing no hydroxyl group (C-3).
    Type: Application
    Filed: March 22, 2013
    Publication date: December 18, 2014
    Applicant: TOYOBO CO., LTD.
    Inventors: Hiroto Yamada, Yukimi Yawata, Kazuya Yoshimoto
  • Patent number: 8904930
    Abstract: The present disclosure describes a printing original plate capable of being laser-engraved such that printing deficiency caused by residues is avoided, and such that resolution and printing quality are good. A flexographic printing original plate capable of being laser-engraved which is obtained by subjecting a photosensitive resin composition containing (A) at least one latex having a weight-average degree of gelation of 40% or more, (B) photopolymerizable compound and (C) photopolymerization initiator to irradiation to light followed by cross-linking and curing. The photopolymerizable component (B) contains the photopolymerizable oligomer and the ethylenic unsaturated monomer in 10 to 25% by weight and 5 to 40% by weight, respectively, to the weight of the photosensitive resin composition and the ethylenic unsaturated monomer comprises 75 to 5% by weight of monofunctional monomer and 25 to 95% by weight of trifunctional monomer.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: December 9, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yukimi Yawata, Kazuya Yoshimoto, Toru Wada
  • Patent number: 8850978
    Abstract: The present invention provides a photosensitive letterpress printing original plate provided with a heat sensitive mask layer having high light blocking effect and durability yet prepared as a thin film. A photosensitive letterpress printing original plate including at least (A) a supporting member, (B) a photosensitive resin layer, and (C) a heat sensitive mask layer that are successively laminated, wherein the heat sensitive mask layer (C) contains carbon black and, as a dispersion binder therefor, a butyral resin as well as polyamide containing polar group selected from the group consisting of polyamide containing a tertiary amine group, polyamide containing a quaternary ammonium salt group, polyamide containing an ether group and polyamide containing a sulfonic group.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: October 7, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yukimi Yawata, Keiichi Motoi, Tetsuma Kawakami, Kazuya Yoshimoto, Toru Wada
  • Publication number: 20140216285
    Abstract: The present invention provides a water-developable laminate of photosensitive resin for letterpress printing original plate by which finer pattern can be reproduced excellently upon making a plate and printing. The flexographic printing original plate being developable by water according to the present invention is characterized in that at least a support, a photosensitive resin layer containing 25% by mass or more of latex having gelation degree of 55% or more and an adhesion-preventing layer are successively laminated, and that the adhesion-preventing layer contains a cellulose derivative. The water-developable laminate of photosensitive resin according to the present invention is characterized in that at least a support, an adhesive layer, a photosensitive resin layer containing a water-soluble polymer compound and an adhesion-preventing layer are successively laminated, and that the adhesion-preventing layer contains a cellulose derivative.
    Type: Application
    Filed: August 22, 2012
    Publication date: August 7, 2014
    Applicant: TOYOBO CO., LTD.
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Hiromichi Yonekura, Satoshi Takahashi
  • Patent number: 8663808
    Abstract: The present invention provides a flexographic printing original plate having no wrinkle on the plate surface and having no plate surface abnormality due to laser in spite of the fact that it is a flexible water-developable plate. A photosensitive flexographic printing original plate developable by water in which at least a supporting member, a photosensitive resin layer, a protective layer and a heat-sensitive mask layer are successively laminated, characterized in that, the protective layer contains (A) polyvinyl alcohol, (B) plasticizer and (C) water-dispersible latex in the following rate. Polyvinyl alcohol (A): 25 to 80 parts by weight Plasticizer (B): 15 to 60 parts by weight Water-dispersible latex (C): 5 to 40 parts by weight.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: March 4, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Yukimi Yawata
  • Patent number: 8313888
    Abstract: The present invention provides a photosensitive flexographic printing original plate provided with a heat sensitive mask layer having high light blocking effect and durability yet prepared as a thin film. A photosensitive flexographic printing original plate including at least (A) a supporting member, (B) a photosensitive resin layer, (C) a protective layer and (D) a heat sensitive mask layer that are successively laminated, wherein the heat sensitive mask layer (D) contains carbon black and, as a dispersion binder therefor, a butyral resin as well as polyamide containing polar group selected from the group consisting of polyamide containing a tertiary amine group, polyamide containing a quaternary ammonium salt group, polyamide containing an ether group and polyamide containing a sulfonic group.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: November 20, 2012
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Yasuyuki Munekuni, Keiichi Motoi, Yukimi Yawata, Toru Wada
  • Publication number: 20120251834
    Abstract: Provided is a method of manufacturing a flexographic printing plate with which it is possible to prevent plate surface contamination even in the printing for long time. A method for manufacturing a flexographic printing plate, characterized in that, a liquid containing an amino-modified silicone compound is made to contact with a flexographic printing plate containing a latex having gelation degree of not less than 50% by mass. Said latex occupies preferably not less than 30% by mass of the printing resin plate, and amino group equivalent of the amino-modified silicone compound is preferably not less than 500 g/mol.
    Type: Application
    Filed: December 24, 2010
    Publication date: October 4, 2012
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kazuya Yoshimoto, Keiichi Motoi
  • Publication number: 20120156514
    Abstract: The present invention provides a flexographic printing original plate having no wrinkle on the plate surface and having no plate surface abnormality due to laser in spite of the fact that it is a flexible water-developable plate. A photosensitive flexographic printing original plate developable by water in which at least a supporting member, a photosensitive resin layer, a protective layer and a heat-sensitive mask layer are successively laminated, characterized in that, the protective layer contains (A) polyvinyl alcohol, (B) plasticizer and (C) water-dispersible latex in the following rate.
    Type: Application
    Filed: July 26, 2010
    Publication date: June 21, 2012
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Yukimi Yawata
  • Publication number: 20120111211
    Abstract: The present invention provides a photosensitive letterpress printing original plate provided with a heat sensitive mask layer having high light blocking effect and durability yet prepared as a thin film. A photosensitive letterpress printing original plate including at least (A) a supporting member, (B) a photosensitive resin layer, and (C) a heat sensitive mask layer that are successively laminated, wherein the heat sensitive mask layer (C) contains carbon black and, as a dispersion binder therefor, a butyral resin as well as polyamide containing polar group selected from the group consisting of polyamide containing a tertiary amine group, polyamide containing a quaternary ammonium salt group, polyamide containing an ether group and polyamide containing a sulfonic group.
    Type: Application
    Filed: February 16, 2009
    Publication date: May 10, 2012
    Applicant: Toyo Boseki Kanushiki Kaisha
    Inventors: Yukimi Yawata, Keiichi Motoi, Tetsuma Kawakami, Kazuya Yoshimoto, Toru Wada
  • Patent number: 8043790
    Abstract: The present invention provides a printing original plate for laser engraving which generates no printing deficiencies and from which a printing plate with a satisfactory resolution can be produced. A printing original plate for laser engraving which is obtained by molding a resin composition containing (A) at least one latex having a weight average degree of gelation of 75% or more, (B) a photopolymerizable compound and (C) a photopolymerization initiator into a sheet-like or tubular form, and then irradiating the molded article with light to crosslink and cure, characterized in that the depth of 10% screen dot at 150 lpi is 80 ?m or more.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: October 25, 2011
    Assignee: Toyo Boseki Kabushki Kaisha
    Inventors: Toru Wada, Kazuya Yoshimoto
  • Publication number: 20110083571
    Abstract: The present invention aims to provide a printing original plate capable of being laser-engraved in which printing deficiency caused by residues is not resulted, resolution is good and printing property is also good. A flexographic printing original plate capable of being laser-engraved which is obtained by subjecting a photosensitive resin composition containing (A) at least one latex having a weight-average degree of gelation of 40% or more, (B) photopolymerizable compound and (C) photopolymerization initiator to irradiation to light followed by cross-linking and curing, wherein the photopolymerizable compound (B) contains the photopolymerizable oligomer and the ethylenic unsaturated monomer in 10 to 25% by weight and 5 to 40% by weight, respectively, to the weight of the photosensitive resin composition and the ethylenic unsaturated monomer comprises 75 to 5% by weight of monofunctional monomer and 25 to 95% by weight of trifunctional monomer.
    Type: Application
    Filed: June 9, 2009
    Publication date: April 14, 2011
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Yukimi Yawata, Kazuya Yoshimoto, Toru Wada
  • Publication number: 20110023739
    Abstract: The present invention aims to provide a flexographic printing original plate where, although it is a flexible aqueous developing plate, reproducibility of fine lines is good. A flexographic printing original plate which is a photosensitive printing original plate where at least (A) a supporting member, (B) a photosensitive resin layer, (C) a protective layer for preventing the polymerization inhibition due to oxygen in the photosensitive resin layer and (D) a heat-sensitive mask layer are successively layered, characterized in that, the photosensitive resin layer (B) is a layer which is able to be developed by water, Young's modulus of the protective layer (C) is 4 MPa to 35 MPa, layer thickness of the protective layer (C) is 0.2 ?m to 2.0 ?m and Young's modulus (MPa) and layer thickness (?m) of the protective layer (C) satisfy the following formula 1: 1?(Young's modulus)×(Layer thickness)2?18??(Formula 1).
    Type: Application
    Filed: January 21, 2009
    Publication date: February 3, 2011
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kazuya Yoshimoto, Tetsuma Kawakami, Yasuyuki Munekuni, Keiichi Motoi, Yukimi Yawata, Toru Wada