Patents by Inventor Naoto Kitamura

Naoto Kitamura 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: 10507995
    Abstract: A sheet conveying device includes a separator to separate a sheet from sheets. The separator includes a separation conveyor; a separation resistance member to press against the separation conveyor via the sheet; a resistance-member holder; a biasing member to contact and bias the resistance-member holder to press the separation resistance member toward the separation conveyor, the resistance-member holder to rotate about a resistance-member rotary shaft to separate from the biasing member in detaching from an apparatus body; and a biasing-member holder configured to rotate about a biasing-member rotary shaft to more incline the biasing member in a state, in which the biasing member is spaced apart from the resistance-member holder, in a moving direction of the resistance-member holder to detach from the apparatus body than the biasing member in a biasing state in which the biasing member biases the resistance-member holder in contact with the resistance-member holder.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 17, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Munekazu Hirata, Satoshi Narai, Yasunobu Youda, Tatsuaki Nagano, Takayuki Andoh, Daisuke Imaki, Tomoya Fujii, Toshiyuki Horikawa, Koji Hatayama, Kaoru Tada, Naoto Kitamura
  • Patent number: 10491768
    Abstract: An image reading device includes a plurality of conveyance rollers to convey a sheet, a motor to drive the plurality of conveyance rollers, an image reading unit to read an image of the sheet, a control device to perform a stop control that stops the sheet in a course of a conveyance path, and a clutch to transmit a driving force of the motor. A first conveyance roller group includes at least one of the plurality of conveyance rollers upstream from a leading end of the sheet stopped by the stop control in a conveyance direction, to which the driving force is transmitted via the clutch. A second conveyance roller group includes at least one of the plurality of conveyance rollers downstream from the leading end of the sheet stopped by the stop control in the conveyance direction, to which the driving force is transmitted without the clutch.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: November 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Andoh, Yasunobu Youda, Tatsuaki Nagano, Daisuke Imaki, Satoshi Narai, Tomoya Fujii, Toshiyuki Horikawa, Koji Hatayama, Kaoru Tada, Munekazu Hirata, Naoto Kitamura
  • Patent number: 10256468
    Abstract: A positive electrode active material for a magnesium secondary battery, and a positive electrode for a magnesium secondary battery and a magnesium secondary battery in which the positive electrode active material is used are provided. The positive electrode active material consists of a magnesium composite oxide which is represented by Formula (1): MgxM1yM2zO2 and which has a rock salt-type crystal structure of space group Fm-3m. In Formula (1), M1 is Ni, Co, or Mn, M2 is different from M1 and is at least one element selected from the group consisting of Ni, Co, Mn, Ti, V, Cr, Fe, Cu, Nb, W, Mo, and Ru, 0<x?1, 0<y<2, 0<z<1; and 1.5?x+y+z?2.0.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: April 9, 2019
    Assignee: Tokyo University of Science Foundation
    Inventors: Yasushi Idemoto, Naoto Kitamura, Naoya Ishida
  • Publication number: 20190068815
    Abstract: An image reading device includes a plurality of conveyance rollers to convey a sheet, a motor to drive the plurality of conveyance rollers, an image reading unit to read an image of the sheet, a control device to perform a stop control that stops the sheet in a course of a conveyance path, and a clutch to transmit a driving force of the motor. A first conveyance roller group includes at least one of the plurality of conveyance rollers upstream from a leading end of the sheet stopped by the stop control in a conveyance direction, to which the driving force is transmitted via the clutch. A second conveyance roller group includes at least one of the plurality of conveyance rollers downstream from the leading end of the sheet stopped by the stop control in the conveyance direction, to which the driving force is transmitted without the clutch.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 28, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Takayuki ANDOH, Yasunobu YOUDA, Tatsuaki NAGANO, Daisuke IMAKI, Satoshi NARAI, Tomoya FUJII, Toshiyuki HORIKAWA, Koji HATAYAMA, Kaoru TADA, Munekazu HIRATA, Naoto KITAMURA
  • Publication number: 20190047809
    Abstract: A sheet conveying device includes a separator to separate a sheet from sheets. The separator includes a separation conveyor; a separation resistance member to press against the separation conveyor via the sheet; a resistance-member holder; a biasing member to contact and bias the resistance-member holder to press the separation resistance member toward the separation conveyor, the resistance-member holder to rotate about a resistance-member rotary shaft to separate from the biasing member in detaching from an apparatus body; and a biasing-member holder configured to rotate about a biasing-member rotary shaft to more incline the biasing member in a state, in which the biasing member is spaced apart from the resistance-member holder, in a moving direction of the resistance-member holder to detach from the apparatus body than the biasing member in a biasing state in which the biasing member biases the resistance-member holder in contact with the resistance-member holder.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Munekazu HIRATA, Satoshi NARAI, Yasunobu YOUDA, Tatsuaki NAGANO, Takayuki ANDOH, Daisuke IMAKI, Tomoya FUJII, Toshiyuki HORIKAWA, Koji HATAYAMA, Kaoru TADA, Naoto KITAMURA
  • Patent number: 10118781
    Abstract: A sheet conveying device includes a sheet container, a separation feeder, a plurality of conveyance drivers, a multifeed detector, a sheet detector, and a conveyance controller. The conveyance drivers are driven to convey a sheet to a conveyance completion position on a sheet conveyance path. The multifeed detector detects occurrence of a multifeed on the conveyance path. The sheet detector detects presence or absence of the sheet at a sheet detection point on the conveyance path. The conveyance controller controls the conveyance drivers to be continuously driven until a preceding sheet preceding multifed sheets is conveyed to the conveyance completion position after the multifeed detector detects the occurrence of the multifeed. The conveyance controller controls the conveyance drivers to stop in a period in which at least one of the multifed sheets is present at the sheet detection point after the preceding sheet is conveyed to the conveyance completion position.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 6, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Andoh, Munekazu Hirata, Naoto Kitamura, Koji Hatayama, Kaoru Tada, Yasunobu Youda
  • Publication number: 20180183058
    Abstract: A positive electrode active material for a magnesium secondary battery, and a positive electrode for a magnesium secondary battery and a magnesium secondary battery in which the positive electrode active material is used are provided. The positive electrode active material consists of a magnesium composite oxide which is represented by Formula (1): MgxM1yM2zO2 and which has a rock salt-type crystal structure of space group Fm-3m. In Formula (1), M1 is Ni, Co, or Mn, M2 is different from M1 and is at least one element selected from the group consisting of Ni, Co, Mn, Ti, V, Cr, Fe, Cu, Nb, W, Mo, and Ru, 0<x?1, 0<y<2, 0<z<1; and 1.5<x+y+z?2.0.
    Type: Application
    Filed: June 6, 2016
    Publication date: June 28, 2018
    Applicant: Tokyo University of Science Foundation
    Inventors: Yasushi Idemoto, Naoto Kitamura, Naoya Ishida
  • Publication number: 20180086579
    Abstract: A sheet conveying device includes a sheet container, a separation feeder, a plurality of conveyance drivers, a multifeed detector, a sheet detector, and a conveyance controller. The conveyance drivers are driven to convey a sheet to a conveyance completion position on a sheet conveyance path. The multifeed detector detects occurrence of a multifeed on the conveyance path. The sheet detector detects presence or absence of the sheet at a sheet detection point on the conveyance path. The conveyance controller controls the conveyance drivers to be continuously driven until a preceding sheet preceding multifed sheets is conveyed to the conveyance completion position after the multifeed detector detects the occurrence of the multifeed. The conveyance controller controls the conveyance drivers to stop in a period in which at least one of the multifed sheets is present at the sheet detection point after the preceding sheet is conveyed to the conveyance completion position.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 29, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Takayuki Andoh, Munekazu Hirata, Naoto Kitamura, Koji Hatayama, Kaoru Tada, Yasunobu Youda
  • Publication number: 20110013342
    Abstract: An object of the present invention is to provide a method for producing a dielectric film excellent in the deposition stability in forming a high-density dielectric film by an electrophoresis method using a dielectric particle-dispersed slurry in which dielectric particles are dispersed. In order to achieve the object, a method for producing a dielectric film using an electrophoresis method comprising arranging a cathode electrode and an anode electrode in a dielectric particle-dispersed slurry in which the dielectric particles are dispersed and carrying out electrolysis to form a dielectric film on one of the electrodes, wherein the dielectric particles contained in the dielectric particle-dispersed slurry are the calcined dielectric particles.
    Type: Application
    Filed: March 13, 2009
    Publication date: January 20, 2011
    Applicants: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yasushi Idemoto, Naoto Kitamura, Akira Ichiryu, Naohiko Abe