Patents by Inventor Kazuhiko Nakajima

Kazuhiko Nakajima 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).

  • Patent number: 11994159
    Abstract: An objective of the present invention is to attach an attached member to a resin panel with less man-hours. According to the present invention, provided is a manufacturing method of a resin panel including an attaching step. In the attaching step, an attached member is attached to a surface of a resin molded body by arranging a rivet body provided on a blind rivet in a concave portion formed on the surface, tearing a part of the rivet body to enlarge a diameter of the part of the rivet body, and allowing the part of the rivet body to penetrate a wall surface of the concave portion.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: May 28, 2024
    Assignee: KYORAKU CO., LTD.
    Inventors: Kazuhiko Saeki, Sho Nakajima, Ryuichi Ishida
  • Publication number: 20230408941
    Abstract: An electrophotographic toner of the present invention includes a toner mother particle including a bright pigment and a resin layer coating the bright pigment. The bright pigment includes a bright portion and a coating layer coating the bright portion, and when the average thickness of the coating layer is A nm and the average thickness of the resin layer is B nm, the electrophotographic toner satisfies A+B?1.600 nm.
    Type: Application
    Filed: May 25, 2023
    Publication date: December 21, 2023
    Inventors: Yohei MARUYAMA, Kazuhiko NAKAJIMA
  • Publication number: 20230341791
    Abstract: Provided is a toner set for developing an electrostatic charge image, including a first toner and a second toner whose toner matrix particles contain different types of pigments, wherein the first toner matrix particles included in the first toner and the second toner matrix particles included in the second toner both contain at least the pigment and a crystalline resin; and the first toner and the second toner satisfy the following specific Expressions (1A) and (2A), 10?WP1?WP2 ??Expression (1A) ?HC1/?HC2?0.15.
    Type: Application
    Filed: April 13, 2023
    Publication date: October 26, 2023
    Inventors: Keisuke ASANO, Kazuhiko NAKAJIMA
  • Patent number: 11320757
    Abstract: An image forming method includes forming an image by transferring and fixing white toner and color toner of at least one color to a recording medium, wherein when an endothermic peak top temperature and a toner softening point in a first temperature increasing process in differential scanning calorimetry of the white toner are Tmw (° C.) and Tspw (° C.), respectively, and an endothermic peak top temperature and a toner softening point in a first temperature increasing process in differential scanning calorimetry of the color toner are Tmc (° C.) and Tspc (° C.), respectively, Equations (1) and (2) below are satisfied: [Math.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: May 3, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuya Kubo, Kazuhiko Nakajima
  • Publication number: 20220009220
    Abstract: The platemaking apparatus according to the present invention forms a pattern on an ink film-forming press plate that has a surface layer containing a stimulus-responsive compound whose physical property can reversibly change in response to an external stimulus. The platemaking apparatus includes: a first stimulator that applies, to a surface of the press plate, a first stimulus that changes the physical property of the surface from a first physical property to a second physical property to form the pattern, on the basis of image data; a second stimulator that applies, to the surface of the press plate, a second stimulus that changes the physical property of the surface from the second physical property to the first physical property, to erase the pattern; and a cleaning unit that removes an ink remained on the surface of the press plate.
    Type: Application
    Filed: June 21, 2021
    Publication date: January 13, 2022
    Inventors: Kouji SUGAMA, Kazuhiko NAKAJIMA, Kengo IKEDA
  • Patent number: 11156933
    Abstract: Provided is an image forming method, including: transferring and fixing a toner onto a recording medium, and forming an image including a plurality of layers, in which an attachment amount of the toner on the recording medium is greater than or equal to 8 g/m2 and less than or equal to 40 g/m2, a toner forming a layer in contact with a fixing member contains at least a first mold release agent containing ester wax and a second mold release agent containing microcrystalline wax, and a special color toner is contained in any layer of the plurality of layers.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: October 26, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventors: Keisuke Asano, Shiro Hirano, Kazuhiko Nakajima
  • Publication number: 20200356020
    Abstract: Provided is an image forming method, including: transferring and fixing a toner onto a recording medium, and forming an image including a plurality of layers, in which an attachment amount of the toner on the recording medium is greater than or equal to 8 g/m2 and less than or equal to 40 g/m2, a toner forming a layer in contact with a fixing member contains at least a first mold release agent containing ester wax and a second mold release agent containing microcrystalline wax, and a special color toner is contained in any layer of the plurality of layers.
    Type: Application
    Filed: April 21, 2020
    Publication date: November 12, 2020
    Inventors: Keisuke ASANO, Shiro HIRANO, Kazuhiko NAKAJIMA
  • Publication number: 20200285166
    Abstract: A toner for developing an electrostatic image includes toner base particles containing a binder resin and an inorganic pigment, and an external additive, wherein the external additive contains alumina particles, and the number average particle size of primary particles of the alumina particles is in the range of 5 nm to 60 nm.
    Type: Application
    Filed: February 10, 2020
    Publication date: September 10, 2020
    Inventors: Masaharu MATSUBARA, Ikuko SAKURADA, Tomoko MINE, Kazuhiko NAKAJIMA
  • Publication number: 20200285169
    Abstract: An image forming method includes forming an image by transferring and fixing white toner and color toner of at least one color to a recording medium, wherein when an endothermic peak top temperature and a toner softening point in a first temperature increasing process in differential scanning calorimetry of the white toner are Tmw (° C.) and Tspw (° C.), respectively, and an endothermic peak top temperature and a toner softening point in a first temperature increasing process in differential scanning calorimetry of the color toner are Tmc (° C.) and Tspc (° C.), respectively, Equations (1) and (2) below are satisfied: [Math.
    Type: Application
    Filed: January 21, 2020
    Publication date: September 10, 2020
    Inventors: Yuya Kubo, Kazuhiko Nakajima
  • Publication number: 20190317419
    Abstract: Provided is an electrophotographic image forming method using two or more electrostatic image developing toners including a charging step, an exposing step, a developing step, a transferring step, and a fixing step, wherein, among the two or more toners, at least one is an achromatic color toner or a clear toner, and at least one is a chromatic color toner which contains a crystalline resin and a releasing agent; in the fixing step, a recording material to which is transferred an unfixed image formed with the two or more electrostatic image developing toners is nipped and conveyed to a fixing nip portion provided between a heated fixing rotating body and a pressure member, and thermally fixed; and a residual toner component is cleaned by a cleaning rotating body which is in contact with the fixing rotating body and a cleaning member which is in contact with the cleaning rotating body.
    Type: Application
    Filed: March 12, 2019
    Publication date: October 17, 2019
    Inventor: Kazuhiko NAKAJIMA
  • Patent number: 10409184
    Abstract: An electrostatic charge image developing toner includes a white pigment being acicular titanium oxide having an average aspect ratio within a range of 3 to 30.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: September 10, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kazuhiko Nakajima, Miyuki Yamada
  • Publication number: 20180074422
    Abstract: An electrostatic charge image developing toner includes a white pigment being acicular titanium oxide having an average aspect ratio within a range of 3 to 30.
    Type: Application
    Filed: August 30, 2017
    Publication date: March 15, 2018
    Inventors: Kazuhiko NAKAJIMA, Miyuki YAMADA
  • Patent number: 8404419
    Abstract: Provided is an electrostatic image developing toner containing, (i) toner particles containing: a binder resin having a domain-matrix structure; and (ii) a colorant; wherein the toner particles have a volume-based median diameter of 4.3 to 7.0 ?m; a domain phase in the binder resin contains a polymer containing a structure unit derived from a diene monomer, the domain phase has a Feret diameter of 50 to 300 nm; and a glass transition temperature of the polymer composing the domain phase is ?85 to +35° C.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: March 26, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Hiroyuki Konno, Kazuhiko Nakajima
  • Publication number: 20110281211
    Abstract: Provided is an electrostatic image developing toner containing, (i) toner particles containing: a binder resin having a domain-matrix structure; and (ii) a colorant; wherein the toner particles have a volume-based median diameter of 4.3 to 7.0 ?m; a domain phase in the binder resin contains a polymer containing a structure unit derived from a diene monomer, the domain phase has a Feret diameter of 50 to 300 nm; and a glass transition temperature of the polymer composing the domain phase is ?85 to +35° C.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 17, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hiroyuki KONNO, Kazuhiko NAKAJIMA
  • Publication number: 20110081606
    Abstract: Disclosed is an electrostatic image developing toner comprised of toner particles containing a binding resin and a coloring agent, and the coloring agent contains a black color material and a cyan color material, the content of the black color material being 0.5 to 3 parts by mass with respect to 100 parts by mass of the above binding resin, as well as the content of the cyan color material being 0.1 to 0.5 parts by mass with respect to 100 parts by mass of the above binding resin.
    Type: Application
    Filed: September 28, 2010
    Publication date: April 7, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hidemasa SAWADA, Kazuhiko NAKAJIMA, Miyuki MURAKAMI
  • Patent number: 7077570
    Abstract: A zipper tape is provided which can freely be used regardless of whether the zipper tape is made from a polypropylene-based resin or a polyethylene-based resin and also on which letters can be printed or any color can be given thereto. A method of producing the zipper tape with high productivity by means of extruding male strips and female strips in rows in a batch is provided. The zipper tape (2) with the mating section (3) (the male strip (3a) and the female strip (3b)) formed thereon has a three-layered structure comprising the heat-insulating film (6) as an intermediate layer, the thermally fused film (7) thermally fused and bonded to one side of the heat-insulating film (6) of the bag (5), and the thermally fused film (8) for formation of a mating section bonded to another side of the bag (5).
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: July 18, 2006
    Assignee: J.P.M. Co., Ltd.
    Inventors: Hirotsugu Fukumori, Nobuyuki Kawai, Hirozo Amano, Nobuhiko Morikawa, Kazuhiko Nakajima, Satoshi Fujioka
  • Patent number: 6808666
    Abstract: A zipper tape is provided which can freely be used regardless of whether the zipper tape is made from a polypropylene-based resin or a polyethylene-based resin and also on which letters can be printed or any color can be given thereto. A method of producing the zipper tape with high productivity by means of extruding male strips and female strips in rows in a batch is provided. The zipper tape with the mating section formed thereon has a three-layered structure. The male strips and female strip for forming a mating section together are extruded from a miscellaneous extrusion molding machine onto a surface of the thermally fused film for forming a mating section in rows in the state where adjoining male and female strips form pairs respectively and are thermally fused and bonded to the base tape.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: October 26, 2004
    Assignee: J.P.M. Co., Ltd.
    Inventors: Hirotsugu Fukumori, Nobuyuki Kawai, Hirozo Amano, Nobuhiko Morikawa, Kazuhiko Nakajima, Satoshi Fujioka
  • Publication number: 20040128805
    Abstract: A zipper tape is provided which can freely be used regardless of whether the zipper tape is made from a polypropylene-based resin or a polyethylene-based resin and also on which letters can be printed or any color can be given thereto. A method of producing the zipper tape with high productivity by means of extruding male strips and female strips in rows in a batch is provided. The zipper tape (2) with the mating section (3) (the male strip (3a) and the female strip (3b)) formed thereon has a three-layered structure comprising the heat-insulating film (6) as an intermediate layer, the thermally fused film (7) thermally fused and bonded to one side of the heat-insulating film (6) of the bag (5), and the thermally fused film (8) for formation of a mating section bonded to another side of the bag (5).
    Type: Application
    Filed: November 18, 2003
    Publication date: July 8, 2004
    Applicant: J.P.M Co., Ltd.
    Inventors: Hirotsugu Fukumori, Nobuyuki Kawai, Hirozo Amano, Nobuhiko Morikawa, Kazuhiko Nakajima, Satoshi Fujioka
  • Publication number: 20040130058
    Abstract: A zipper tape is provided which can freely be used regardless of whether the zipper tape is made from a polypropylene-based resin or a polyethylene-based resin and also on which letters can be printed or any color can be given thereto. A method of producing the zipper tape with high productivity by means of extruding male strips and female strips in rows in a batch is provided. The zipper tape (2) with the mating section (3) (the male strip (3a) and the female strip (3b)) formed thereon has a three-layered structure comprising the heat-insulating film (6) as an intermediate layer, the thermally fused film (7) thermally fused and bonded to one side of the heat-insulating film (6) of the bag (5), and the thermally fused film (8) for formation of a mating section bonded to another side of the bag (5).
    Type: Application
    Filed: November 18, 2003
    Publication date: July 8, 2004
    Applicant: J.P.M Co., Ltd.
    Inventors: Hirotsugu Fukumori, Nobuyuki Kawai, Hirozo Amano, Nobuhiko Morikawa, Kazuhiko Nakajima, Satoshi Fujioka
  • Publication number: 20040098845
    Abstract: A zipper tape is provided which can freely be used regardless of whether the zipper tape is made from a polypropylene-based resin or a polyethylene-based resin and also on which letters can be printed or any color can be given thereto. A method of producing the zipper tape with high productivity by means of extruding male strips and female strips in rows in a batch is provided. The zipper tape (2) with the mating section (3) (the male strip (3a) and the female strip (3b)) formed thereon has a three-layered structure comprising the heat-insulating film (6) as an intermediate layer, the thermally fused film (7) thermally fused and bonded to one side of the heat-insulating film (6) of the bag (5), and the thermally fused film (8) for formation of a mating section bonded to another side of the bag (5).
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Applicant: J.P.M Co., Ltd.
    Inventors: Hirotsugu Fukumori, Nobuyuki Kawai, Hirozo Amano, Nobuhiko Morikawa, Kazuhiko Nakajima, Satoshi Fujioka