Patents by Inventor Kazuhito Wakabayashi

Kazuhito Wakabayashi 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: 11449463
    Abstract: A save folder to be used in order for an analysis data acquisition device to save an analysis data file in a storage is created by a creator. When a file determiner determines that the analysis data file is saved in the created save folder, the analysis data file saved in the save folder is registered by a registrator in an analysis database of a database storage device. When an end determiner determines that an instruction for ending registration of the analysis data file in the analysis database has been given, a region processor makes the save folder unavailable for the registration of the analysis data file in the analysis database.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 20, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Kazuhito Wakabayashi, Takayuki Nakatani
  • Patent number: 11256191
    Abstract: Provided is a developer carrying member that can stably form a high-quality electrophotographic image. The developer carrying member includes an electroconductive support and a surface layer in the stated order, wherein the surface layer contains a binder resin and electroconductive particles, and a content of the electroconductive particles in a region from a surface of the surface layer opposite to an outer surface thereof on a side facing the electroconductive support to a depth of 150 nm is 1% or more and 25% or less, and wherein the surface layer has a volume resistivity of 1.0×10?2 ?·cm or more and 1.0×102?·cm or less.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: February 22, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kineo Takeno, Kazuhito Wakabayashi, Atsushi Noguchi
  • Publication number: 20210389691
    Abstract: Provided is a developer carrying member that can stably form a high-quality electrophotographic image. The developer carrying member includes an electroconductive support and a surface layer in the stated order, wherein the surface layer contains a binder resin and electroconductive particles, and a content of the electroconductive particles in a region from a surface of the surface layer opposite to an outer surface thereof on a side facing the electroconductive support to a depth of 150 nm is 1% or more and 25% or less, and wherein the surface layer has a volume resistivity of 1.0×10?2 ?·cm or more and 1.0×102 ?·cm or less.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Inventors: Kineo Takeno, Kazuhito Wakabayashi, Atsushi Noguchi
  • Publication number: 20210072935
    Abstract: A printer driver to be installed on a PC connected to an analysis device has a function of generating a PDF file of an analysis result report generated based on analysis data (postscript printer driver unit 252), a function of extracting text information such as sample information from the PDF file (text information extraction processing unit 253), a function of extracting a file path of an analysis raw data file from the text information and acquiring the analysis raw data file (analysis raw data acquisition processing unit 254), and a function of transmitting a PDF file of an analysis result report, an analysis raw data file, and the like to a database server PC through a LAN and registering them in a database (database registration processing unit 255). With this, the PDF file and/or the analysis raw data file can be registered in the database without outputting it to a network shared folder, which can achieve high security.
    Type: Application
    Filed: March 29, 2018
    Publication date: March 11, 2021
    Inventors: Kazuhito WAKABAYASHI, Yugo HASE
  • Patent number: 10712684
    Abstract: To provide a developing roller having improved toner conveying force in a high-temperature and high-humidity environment. The developing roller has a substrate and an electro-conductive layer on the substrate. The outer surface of the developing roller has an electrical insulating first region and an electro-conductive second region adjacent to the first region and at the same time has at least one groove in the first region.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: July 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhito Wakabayashi, Kazuaki Nagaoka, Ryo Sugiyama, Kunimasa Kawamura, Minoru Nakamura
  • Publication number: 20200073279
    Abstract: To provide a developing roller having improved toner conveying force in a high-temperature and high-humidity environment. The developing roller has a substrate and an electro-conductive layer on the substrate. The outer surface of the developing roller has an electrical insulating first region and an electro-conductive second region adjacent to the first region and at the same time has at least one groove in the first region.
    Type: Application
    Filed: August 15, 2019
    Publication date: March 5, 2020
    Inventors: Kazuhito Wakabayashi, Kazuaki Nagaoka, Ryo Sugiyama, Kunimasa Kawamura, Minoru Nakamura
  • Publication number: 20200019080
    Abstract: A member for electrophotography includes a base, an elastic layer on the base, the elastic layer comprising a silicone rubber, and a resin layer on the elastic layer and containing a resin. The resin in the resin layer and a silicon atom in the silicone rubber contained in the elastic layer bond to each other with a linking group. The linking group has a particular structure, and the linking group has a molecular weight of 58 or more and 550 or less.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Inventors: Tomoya Uesugi, Minoru Ito, Kazuhito Wakabayashi, Masaki Yamada
  • Publication number: 20190108233
    Abstract: A save folder to be used in order for an analysis data acquisition device to save an analysis data file in a storage is created by a creator. When a file determiner determines that the analysis data file is saved in the created save folder, the analysis data file saved in the save folder is registered by a registrator in an analysis database of a database storage device. When an end determiner determines that an instruction for ending registration of the analysis data file in the analysis database has been given, a region processor makes the save folder unavailable for the registration of the analysis data file in the analysis database.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 11, 2019
    Applicant: SHIMADZU CORPORATION
    Inventors: Kazuhito WAKABAYASHI, Takayuki NAKATANI
  • Patent number: 10031438
    Abstract: The present invention provides an electrophotographic member which can prevent generation of fogging while high quality images can be output during long-term use. The present invention is an electrophotographic member including a substrate, and an outermost layer directly or indirectly on the substrate, wherein the outermost layer contains a compound having at least a Si—O—Al bond, and the compound has a structural unit represented by Formula (1) and a structural unit represented by AlO3/2.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 24, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhito Wakabayashi, Minoru Ito, Tomoya Uesugi
  • Patent number: 9581934
    Abstract: The developing apparatus includes a toner, a developing container, a developing roller, and a toner layer thickness controlling member, wherein the toner contains toner particles containing a binder resin and a colorant, and silica fine particles; the covering rate X1 of the surface of each of the toner particles with the silica fine particles is 40.0 to 75.0 area %; and a diffusion index represented by X1/X2 satisfies a predetermined range where the theoretical covering rate with the silica fine particles is defined as X2, the developing roller includes a substrate, a base layer, and a coverage portion; and the volume resistivity of the coverage portion and the average thickness of the coverage portion are within predetermined ranges.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Minoru Ito, Masaki Yamada, Kazuhito Wakabayashi, Tomoya Uesugi, Michihisa Magome, Takashi Matsui
  • Publication number: 20170010562
    Abstract: The present invention provides an electrophotographic member which can prevent generation of fogging while high quality images can be output during long-term use. The present invention is an electrophotographic member including a substrate, and an outermost layer directly or indirectly on the substrate, wherein the outermost layer contains a compound having at least a Si—O—Al bond, and the compound has a structural unit represented by Formula (1) and a structural unit represented by AlO3/2.
    Type: Application
    Filed: June 28, 2016
    Publication date: January 12, 2017
    Inventors: Kazuhito Wakabayashi, Minoru Ito, Tomoya Uesugi
  • Patent number: 9442419
    Abstract: A developing apparatus and a developing method that significantly suppress generation of fogging and form a high-quality electrophotographic images under any environments such as a high temperature and high humidity environment and a low temperature and low humidity environment are provided. A toner wherein a covering rate X1 of the surface of a toner particle with silica fine particles, which is determined by ESCA, is 40.0 to 75.0 area %, and the diffusion index represented by (Expression 1) diffusion index=X1/X2 satisfies (Expression 2) diffusion index??0.0042×X1+0.62 where in the theoretical covering rate with the silica fine particles is defined as X2; and a developing apparatus including a developing carrying member which is a surface layer formed of a urethane resin having a partial structure derived from a reaction of a polyisocyanate with a compound represented by Formula 1.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: September 13, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhito Wakabayashi, Masaki Yamada, Minoru Ito, Tomoya Uesugi, Michihisa Magome, Takashi Matsui
  • Publication number: 20160161876
    Abstract: A member for electrophotography includes a base, an elastic layer on the base, the elastic layer comprising a silicone rubber, and a resin layer on the elastic layer and containing a resin. The resin in the resin layer and a silicon atom in the silicone rubber contained in the elastic layer bond to each other with a linking group. The linking group has a particular structure, and the linking group has a molecular weight of 58 or more and 550 or less.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 9, 2016
    Inventors: Tomoya Uesugi, Minoru Ito, Kazuhito Wakabayashi, Masaki Yamada
  • Publication number: 20150185656
    Abstract: The developing apparatus includes a toner, a developing container, a developing roller, and a toner layer thickness controlling member, wherein the toner contains toner particles containing a binder resin and a colorant, and silica fine particles; the covering rate X1 of the surface of each of the toner particles with the silica fine particles is 40.0 to 75.0 area %; and a diffusion index represented by X1/X2 satisfies a predetermined range where the theoretical covering rate with the silica fine particles is defined as X2, the developing roller includes a substrate, a base layer, and a coverage portion; and the volume resistivity of the coverage portion and the average thickness of the coverage portion are within predetermined ranges.
    Type: Application
    Filed: December 17, 2014
    Publication date: July 2, 2015
    Inventors: Minoru Ito, Masaki Yamada, Kazuhito Wakabayashi, Tomoya Uesugi, Michihisa Magome, Takashi Matsui
  • Publication number: 20150185658
    Abstract: A developing apparatus and a developing method that significantly suppress generation of fogging and form a high-quality electrophotographic images under any environments such as a high temperature and high humidity environment and a low temperature and low humidity environment are provided. A toner wherein a covering rate X1 of the surface of a toner particle with silica fine particles, which is determined by ESCA, is 40.0 to 75.0 area %, and the diffusion index represented by (Expression 1) diffusion index=X1/X2 satisfies (Expression 2) diffusion index??0.0042×X1+0.62 where in the theoretical covering rate with the silica fine particles is defined as X2; and a developing apparatus including a developing carrying member which is a surface layer formed of a urethane resin having a partial structure derived from a reaction of a polyisocyanate with a compound represented by Formula 1.
    Type: Application
    Filed: December 16, 2014
    Publication date: July 2, 2015
    Inventors: Kazuhito Wakabayashi, Masaki Yamada, Minoru Ito, Tomoya Uesugi, Michihisa Magome, Takashi Matsui
  • Patent number: 9026012
    Abstract: A developer carrying member is provided the surface layer of which can make a developer stable by controlling its triboelectric charging strongly and which can maintain a high image quality over a long period of time even where a developer made highly spherical-particle or a small-particle developer is used. The developer carrying member has a substrate and a surface layer. The surface layer is a cured product of a resin composition containing a binder resin, conductive particles, a quaternary ammonium salt and an azo metal complex compound, the binder resin has in the molecular structure at least one structure selected from the group consisting of an —NH2 group, an ?NH group and an —NH— linkage, and the azo metal complex compound is a compound represented by the formula (1) as defined in the specification.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 5, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Otake, Masayoshi Shimamura, Yasutaka Akashi, Takuma Matsuda, Minoru Ito, Kazuhito Wakabayashi, Atsushi Noguchi, Hironori Mori
  • Patent number: 8846287
    Abstract: A high quality electrophotographic member that is excellent in deformation recovery property under high-temperature and high-humidity and that also satisfies filming resistance under low-temperature and low-humidity is provided. The electrophotographic member includes a substrate, an elastic layer, and a surface layer containing a urethane resin, wherein the urethane resin has a partial structure having at least one structure selected from the group consisting of structures of structural formulae (1) to (7) between adjacent two urethane linkages, and the urethane resin further has a partial structure derived from a reaction of a compound represented by a structural formula (8) with a polyisocyanate.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: September 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaki Yamada, Kazutoshi Ishida, Minoru Ito, Kazuhito Wakabayashi, Tomoya Uesugi
  • Patent number: 8837985
    Abstract: Provided is an electrophotographic member, which hardly changes in performance even when being left to stand for a long time period. The electrophotographic member comprises a support, an elastic layer formed on the support, and a surface layer covering a surface of the elastic layer and containing a urethane resin, and in which the urethane resin comprises a reaction product of: a hydroxyl group-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate; and an isocyanate-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazutoshi Ishida, Masaki Yamada, Minoru Ito, Kazuhito Wakabayashi, Tomoya Uesugi
  • Patent number: 8792810
    Abstract: A developer carrying member is provided which can maintain a high image quality over a long period of time even where a highly triboelectrically chargeable developer is used. The developer carrying member has a substrate and a surface layer. The surface layer is a cured product of a resin composition containing a binder resin, conductive particles, a quaternary phosphonium salt and an azo metal complex compound, the binder resin has in the molecular structure at least one structure selected from the group consisting of an —NH2 group, an ?NH group and an —NH— linkage, and the azo metal complex compound is a compound represented by the formula (1) as defined in the specification.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 29, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Ito, Masayoshi Shimamura, Yasutaka Akashi, Satoshi Otake, Takuma Matsuda, Kazuhito Wakabayashi, Atsushi Noguchi, Hironori Mori
  • Publication number: 20140105646
    Abstract: Provided is an electrophotographic member, which hardly changes in performance even when being left to stand for a long time period. The electrophotographic member comprises a support, an elastic layer formed on the support, and a surface layer covering a surface of the elastic layer and containing a urethane resin, and in which the urethane resin comprises a reaction product of: a hydroxyl group-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate; and an isocyanate-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kazutoshi Ishida, Masaki Yamada, Minoru Ito, Kazuhito Wakabayashi, Tomoya Uesugi