Patents by Inventor Yuko Arizumi

Yuko Arizumi 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: 20160328066
    Abstract: A digital signage system includes a transducer configured to transform a pressure to an electrical signal; a control apparatus configured to change information in association with the intensity of the electrical signal; and an output apparatus configured to output the information to an output target based on a command of the control apparatus.
    Type: Application
    Filed: April 13, 2016
    Publication date: November 10, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Tsuneaki KONDOH, Tomoaki SUGAWARA, Yuko ARIZUMI, Junichiro NATORI, Mizuki OTAGIRI, Takahiro IMAI
  • Publication number: 20160276957
    Abstract: To provide an electric generating element including a first electrode; an intermediate layer; and a second electrode, the first electrode, the intermediate layer, and the second electrode being disposed in this order, the intermediate layer being in contact with at least one of the first electrode and the second electrode, wherein the intermediate layer microscopically moves in a horizontal direction relative to a surface of the first electrode and a surface of the second electrode, when the intermediate layer is pressed in a vertical direction relative to the surface of the first electrode and the surface of the second electrode in a state that the intermediate layer is not secured with at least one of the first electrode and the second electrode.
    Type: Application
    Filed: February 24, 2016
    Publication date: September 22, 2016
    Inventors: Tomoaki SUGAWARA, Junichiro Natori, Tsuneaki Kondoh, Yuko Arizumi, Mizuki Otagiri, Takahiro Imai
  • Patent number: 9182714
    Abstract: A fixing member used for fixing toner includes a base, an elastic layer provided on an outer circumference of the base, and a release layer provided on an outer circumference of the elastic layer. The elastic layer includes silicone rubber, carbon fibers, saturated hydrocarbon having a liquid form at room temperature, and hole portions.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: November 10, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuko Arizumi, Tomoaki Sugawara, Tsuneaki Kondoh, Junichiro Natori
  • Patent number: 9158249
    Abstract: A fixing member including a base; a first elastic layer overlaid on an outer circumference of the base, the first elastic layer formed of a silicone rubber composition including a heat conductive filler and a micro-balloon, the heat conductive filler of the first elastic layer is a heat conductive needle shaped filler; a second elastic layer overlaid on an outer circumference of the first elastic layer, the second elastic layer formed of a silicone rubber composition including a heat conductive filler and a micro-balloon, the heat conductive filler of the second elastic layer is a heat conductive needle shaped filler and a heat conductive sphere shaped filler; and a release layer overlaid on an outer circumference of the second elastic layer. An amount of the heat conductive filler of the second elastic layer is larger than an amount of the heat conductive filler of the first elastic layer.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: October 13, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuko Arizumi, Tomoaki Sugawara, Tsuneaki Kondoh, Junichiro Natori
  • Patent number: 9152109
    Abstract: A cylindrical fixing member includes a substrate; an elastic layer overlying the substrate; an outermost surface release layer overlying the elastic layer; and a heat source inside. The elastic layer includes a carbon fiber and has a heat diffusivity (X) not less than 1.0×10?6 m2/s in a direction of a rotational axis of the fixing member, and the heat diffusivity (X) is not less than 2.0 times of a heat diffusivity (Z) in a direction of thickness of the elastic layer.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: October 6, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomoaki Sugawara, Yuko Arizumi, Junichiro Natori, Tsuneaki Kondoh
  • Publication number: 20150252821
    Abstract: A hydraulic actuator, which contains: a tubular elastic body, at least part of which contains short fibers aligned in a longitudinal direction; a fluid storing chamber, which is formed within an internal space of the tubular elastic body, and can store a fluid; and an inlet-outlet pore, which is formed at least one end of the tubular elastic body relative to the longitudinal direction, and can introduce and discharge the fluid into and from the fluid storing chamber.
    Type: Application
    Filed: February 6, 2015
    Publication date: September 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomoaki SUGAWARA, Tsuneaki KONDOH, Yuko ARIZUMI, Junichiro NATORI
  • Patent number: 9104152
    Abstract: A pressing member includes a heat resistant material, highly heat conductive needle shaped fillers included in the heat resistant material, and hole portions included in the heat resistant material. The pressing member is provided in a fixing device including a fixing member, a heating member to heat the fixing member, and a pressure roller. The pressing member is arranged to press the fixing member and form a nip portion between the fixing member and the pressure roller through which a recording sheet passes.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 11, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tsuneaki Kondoh, Tomoaki Sugawara, Yuko Arizumi, Junichiro Natori
  • Publication number: 20150177654
    Abstract: A fixing member including a base; a first elastic layer overlaid on an outer circumference of the base, the first elastic layer formed of a silicone rubber composition including a heat conductive filler and a micro-balloon, the heat conductive filler of the first elastic layer is a heat conductive needle shaped filler; a second elastic layer overlaid on an outer circumference of the first elastic layer, the second elastic layer formed of a silicone rubber composition including a heat conductive filler and a micro-balloon, the heat conductive filler of the second elastic layer is a heat conductive needle shaped filler and a heat conductive sphere shaped filler; and a release layer overlaid on an outer circumference of the second elastic layer. An amount of the heat conductive filler of the second elastic layer is larger than an amount of the heat conductive filler of the first elastic layer.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 25, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuko Arizumi, Tomoaki Sugawara, Tsuneaki Kondoh, Junichiro Natori
  • Publication number: 20150030363
    Abstract: A cylindrical fixing member includes a substrate; an elastic layer overlying the substrate; an outermost surface release layer overlying the elastic layer; and a heat source inside. The elastic layer includes a carbon fiber and has a heat diffusivity (X) not less than 1.0×10?6 m2/s in a direction of a rotational axis of the fixing member, and the heat diffusivity (X) is not less than 2.0 times of a heat diffusivity (Z) in a direction of thickness of the elastic layer.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 29, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomoaki SUGAWARA, Yuko ARIZUMI, Junichiro NATORI, Tsuneaki KONDOH
  • Publication number: 20140270823
    Abstract: An electrophotographic fixing device includes a pressure roller, and a fixing rotary member disposed at a fixed distance away from the pressure roller. The fixing rotary member includes a layer formed of an elastic body. The elastic body includes carbon fibers and hole portions. The electrophotographic fixing device controls pressure of a nip between the pressure roller and the fixing rotary member by a temperature setting according to a sheet type.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomoaki Sugawara, Tsuneaki Kondoh, Junichiro Natori, Yuko Arizumi
  • Publication number: 20140241770
    Abstract: A fixing member used for fixing toner includes a base, an elastic layer provided on an outer circumference of the base, and a release layer provided on an outer circumference of the elastic layer. The elastic layer includes silicone rubber, carbon fibers, saturated hydrocarbon having a liquid form at room temperature, and hole portions.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 28, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuko ARIZUMI, Tomoaki SUGAWARA, Tsuneaki KONDOH, Junichiro NATORI
  • Publication number: 20140212705
    Abstract: A solid dye sensitization type solar cell includes a substrate, a first electrode disposed on the substrate, an electron transport layer including an electron transport semiconductor and disposed on the first electrode, the electron transport layer including a photosensitizing compound adsorbed on a surface of the electron transport semiconductor, a hole transport layer disposed on the electron transport layer, and a second electrode disposed on the hole transport layer. Each of the first electrode and the second electrode includes divided multiple electrodes.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 31, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tamotsu Horiuchi, Tohru Yashiro, Hiroshi Deguchi, Hisamitsu Kamezaki, Takumi Yamaga, Keiichiroh Yutani, Yuko Arizumi
  • Publication number: 20140205334
    Abstract: A pressing member includes a heat resistant material, highly heat conductive needle shaped fillers included in the heat resistant material, and hole portions included in the heat resistant material. The pressing member is provided in a fixing device including a fixing member, a heating member to heat the fixing member, and a pressure roller. The pressing member is arranged to press the fixing member and form a nip portion between the fixing member and the pressure roller through which a recording sheet passes.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tsuneaki Kondoh, Tomoaki SUGAWARA, Yuko ARIZUMI, Junichiro NATORI
  • Patent number: 8737899
    Abstract: Disclosed is a fixing liquid containing a softening agent that softens resin-containing fine particles by dissolving or swelling at least a part of the resin; a C12-C18 fatty acid; and a C12-C18 fatty acid salt. The fixing liquid is mixed with water serving as a dilution solvent.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: May 27, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Tomoyasu Hirasawa, Tomoaki Sugawara, Takuma Nakamura, Yuko Arizumi
  • Patent number: 8699933
    Abstract: Disclosed is, for example, a fixation device of fixing a resin-containing fine particle, the fixation device being configured to foam a fixation fluid including at least a softening agent configured to dissolve or swell at least one portion of a resin to soften the resin-containing fine particle including a resin, a foaming agent, and water, and to provide a foamed fixation fluid to the resin-containing fine particle, the fixation device including a first storage part configured to contain a softening agent fluid including at least the softening agent, a second storage part configured to contain a foaming agent fluid including at least the foaming agent, and a mixed foamed fixation fluid producing part configured to mix and foam both fluids contained in independent states in the storage parts to produce the foamed fixation fluid.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Yuko Arizumi, Shigeo Takeuchi, Takahiko Matsumoto, Yukimichi Someya, Fuminari Kaneko
  • Patent number: 8693939
    Abstract: A disclosed fixing device includes a fixer application unit configured to apply a fixer containing a softener, capable of softening resin by dissolving or swelling at least a part of the resin, and water to resin particles formed on a recording medium such that the resin particles are fixed on the recording medium. The fixing unit may further include an anti-tack agent application unit configured to apply a liquid anti-tack agent immiscible with the softener to surfaces of the resin particles that are mixed with the softener by the application of the fixer containing the softener.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: April 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidenori Tomono, Yasuo Katano, Yukimichi Someya, Tsuneo Kurotori, Yuko Arizumi, Shigenobu Hirano, Hidekazu Yaginuma, Shigeo Takeuchi, Fuminari Kaneko
  • Patent number: 8663893
    Abstract: To provide a fixing solution for fixing fine resin particles to a recording medium, the fixing solution including: a diluent which contains water; a foaming agent which allows the fixing solution to be in the form of foam; and plasticizers which soften or swell at least part of the fine resin particles, wherein the plasticizers contain a liquid plasticizer which is liquid at normal temperature and soluble in the diluent, and a solid plasticizer which is solid at normal temperature and soluble in the diluent.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: March 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Yukimichi Someya, Fuminari Kaneko, Yuko Arizumi, Shigeo Takeuchi, Shigenobu Hirano, Hidenori Tomono, Hidekazu Yaginuma
  • Patent number: 8463171
    Abstract: To provide a fixing solution for fixing fine resin particles to a recording medium, the fixing solution including: a diluent which contains water; a foaming agent which allows the fixing solution to be in the form of foam; and a solid plasticizer which is solid at normal temperature and soluble in the diluent, and which softens or swells at least part of the fine resin particles while dissolved in the diluent.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: June 11, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Yuko Arizumi, Shigeo Takeuchi, Hidekazu Yaginuma, Fuminari Kaneko, Yukimichi Someya, Shigenobu Hirano, Hidenori Tomono
  • Patent number: 8452221
    Abstract: Disclosed is a fixation fluid, including a softening agent(s), the softening agent(s) being a saturated aliphatic carboxylic acid ester(s) of a saturated aliphatic alcohol(s) and/or a carbonic acid ester(s) of a dihydric saturated aliphatic alcohol(s), a foaming agent(s), the foaming agent(s) being a non-ionic surfactant(s) and/or an amphoteric surfactant(s), water, a pH adjustor(s), the pH adjustor(s) being an acid(s) and/or a salt(s) of the acid(s), and a pH of the fixation fluid being 6 or more and 7 or less.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: May 28, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Fuminari Kaneko, Yasuo Katano, Tsuneo Kurotori, Yukimichi Someya, Yuko Arizumi, Shigeo Takeuchi, Takahiko Matsumoto
  • Publication number: 20120135342
    Abstract: To provide a fixing solution for fixing fine resin particles to a recording medium, the fixing solution including: a diluent which contains water; a foaming agent which allows the fixing solution to be in the form of foam; and plasticizers which soften or swell at least part of the fine resin particles, wherein the plasticizers contain a liquid plasticizer which is liquid at normal temperature and soluble in the diluent, and a solid plasticizer which is solid at normal temperature and soluble in the diluent.
    Type: Application
    Filed: July 1, 2010
    Publication date: May 31, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Yukimichi Someya, Yuko Arizumi, Shigeo Takeuchi, Shigenobu Hirano, Hidenori Tomono, Hidekazu Yaginuma