Patents by Inventor Takuya Murata

Takuya Murata 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: 20210276348
    Abstract: A printing apparatus includes a conveyance unit including a pair of rotation members that nip a roll sheet, and configured to convey the sheet by rotation of the pair of rotation members, a printing unit, and a control unit configured to, upon executing a new print job, cause the conveyance unit to perform a preparatory operation in which the sheet is conveyed in a forward direction and then conveyed in a reverse direction and stopped. If a predetermined condition is met after completion of a previous print job, the control unit causes the conveyance unit to perform the preparatory operation, and if the predetermined condition is not met after completion of a previous print job, the control unit does not cause the conveyance unit to perform the preparatory operation.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 9, 2021
    Inventors: Takuya Suto, Toshiro Sugiyama, Ryosuke Murata, Daigo Kuronuma, Kenji Shimamura, Ryo Harigae, Toshiaki Yamaguchi, Kouhei Tokuda
  • Publication number: 20210276350
    Abstract: A printing apparatus comprises: a conveyance unit configured to convey a sheet to a printing unit configured to perform printing; a control unit configured to cause the conveyance unit to hold the sheet onto which printing was performed by the printing unit; and a receiving unit configured to receive an ejection instruction for instructing to eject the sheet, wherein the control unit, in a case where the receiving unit receives the ejection instruction, controls the conveyance unit to eject the sheet to outside of the apparatus after a predetermined time has elapsed.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 9, 2021
    Inventors: Ryosuke Murata, Takuya Suto, Toshiro Sugiyama, Daigo Kuronuma, Kenji Shimamura, Ryo Harigae, Toshiaki Yamaguchi, Kouhei Tokuda
  • Publication number: 20210276349
    Abstract: An apparatus includes a printing unit, a conveyance unit including first and second rotating members that nip and convey the sheet, and configured to hold the sheet by temporarily stopping the conveyance before completion of discharge of the sheet, a detection unit configured to detect a rotation of the first rotating member, a determination unit configured to determine whether the sheet has been pulled in a discharge direction based on a detection result of the detection unit in a case where the conveyance unit holds the sheet, and a control unit configured to, if the determination unit determines that the sheet has been pulled in the discharge direction, cause the conveyance unit to perform a discharging process of the sheet.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 9, 2021
    Inventors: Daigo Kuronuma, Toshiaki Yamaguchi, Takuya Suto, Toshiro Sugiyama, Kouhei Tokuda, Kenji Shimamura, Ryo Harigae, Ryosuke Murata
  • Patent number: 11102373
    Abstract: An image forming apparatus includes an image forming device and circuitry. The image forming device is configured to form an image on a medium. The circuitry is configured to detect a position of the image forming device relative to the medium. The circuitry is further configured to control the image forming device based on the position of the image forming device detected and image data. The circuitry is further configured to control a system state of the image forming device based on the position of the image forming device associated with movement of the image forming device relative to the medium.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 24, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Tanaka, Takuya Murata, Ko Tokumaru
  • Publication number: 20210151077
    Abstract: There are provided: an aluminum alloy substrate for a magnetic disk, the aluminum alloy substrate including an aluminum alloy including 0.4 to 3.0 mass % of Fe and the balance of Al and unavoidable impurities, in which second phase particles having a longest diameter of 0.5 ?m or more and less than 2.0 ?m are dispersed at a distribution density of 5000 particles/mm2 or more; a method for producing the same; and a magnetic disk using the aluminum alloy substrate for a magnetic disk.
    Type: Application
    Filed: April 9, 2018
    Publication date: May 20, 2021
    Inventors: Kotaro KITAWAKI, Takuya MURATA, Makoto YONEMITSU, Yu MATSUI, Yasuo FUJII, Ryo SAKAMOTO, Takashi NAKAYAMA, Wataru KUMAGAI
  • Patent number: 11006016
    Abstract: An image forming apparatus is configured to form an image on a recording medium by scanning of the image forming apparatus by a user. The image forming apparatus includes an image forming device and processing circuitry. The image forming device includes a plurality of image forming arrays. Each of the image forming arrays includes an image forming portion configured to form the image. The processing circuitry is configured to set an image forming array to be used to form the image, according to a use mode of the image forming apparatus.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 11, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ko Tokumaru, Jun Shiori, Takuya Murata, Yuji Tanaka, Takahisa Koike
  • Publication number: 20210050034
    Abstract: A magnetic disk substrate is composed of an aluminum alloy substrate, a base plating layer on a surface of the aluminum alloy substrate, and a boundary region between the aluminum alloy substrate and the base plating layer. The boundary region includes a specific boundary region (D(1)I((50-84)) having A, emission intensities equal to 50% to 84% of an average Al emission intensity in an interior region of the aluminum alloy substrate in glow discharge optical emission spectroscopy in the depthwise direction from the surface of the magnetic disk substrate. The specific boundary region (D(1)I(50-84)) has a maximum Fe emission intensity (I(1)Fe(max)) higher than an average Fe emission intensity (I(1)Fe(ave)) in the interior region of the aluminum alloy substrate in the glow discharge optical emission spectroscopy.
    Type: Application
    Filed: November 28, 2018
    Publication date: February 18, 2021
    Inventors: Takuya MURATA, Kotaro KITAWAKI, Makoto YONEMITSU, Yasuo FUJII, Ryo SAKAMOTO, Hideyuki HATAKEYAMA, Sadayuki TODA
  • Publication number: 20210008864
    Abstract: A peeling apparatus for an aluminum plate material is configured to be able to peel one or a plurality of aluminum plate materials from a stack of aluminum plate materials in which a plurality of aluminum plate materials are pressure-annealed and adhered to each other. The peeling apparatus includes a vibration transmitting section that is configured to be able to abut an outer peripheral surface of an aluminum plate material and is configured to be able to apply vibration along a stacking direction of the stack to the aluminum plate material, and a transducer that generates the vibration, and transmits the vibration to the vibration transmitting section.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Applicants: FURUKAWA ELECTRIC CO., LTD., UACJ CORPORATION
    Inventors: Toshihiro NAKAMURA, Hideki TAKAHASHI, Kimie IMAKAWA, Naoki KITAMURA, Kotaro KITAWAKI, Takuya MURATA
  • Publication number: 20210012801
    Abstract: Provided are a magnetic disk and a method of fabricating the magnetic disk. The magnetic disk includes an aluminum alloy plate fabricated by a process involving a CC method and a compound removal process, and an electroless Ni—P plating layer disposed on the surface of the plate. The aluminum alloy plate is composed of an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter abbreviated simply as “%”) of Fe, 0.1% to 3.0% of Mn, 0.005% to 1.000% of Cu, 0.005% to 1.000% of Zn, with a balance of Al and unavoidable impurities. In the magnetic disk, the maximum amplitude of waviness in a wavelength range of 0.4 to 5.0 mm is 5 nm or less, and the maximum amplitude of waviness in a wavelength range of 0.08 to 0.45 mm is 1.5 nm or less.
    Type: Application
    Filed: November 28, 2018
    Publication date: January 14, 2021
    Inventors: Takuya MURATA, Kotaro KITAWAKI, Makoto YONEMITSU, Hideyuki HATAKEYAMA, Takashi NAKAYAMA, Ryo SAKAMOTO, Hiroki OTA
  • Publication number: 20200377984
    Abstract: Provided are: an aluminum alloy substrate for a magnetic disk, including an aluminum alloy including 0.4 to 3.0 mass % of Fe with the balance of Al and unavoidable impurities; a method for producing the aluminum alloy substrate for a magnetic disk; and a magnetic disk in which an electroless Ni—P plating treatment layer and a magnetic layer formed thereon are disposed on a surface of the aluminum alloy substrate for a magnetic disk.
    Type: Application
    Filed: February 9, 2018
    Publication date: December 3, 2020
    Inventors: Kotaro KITAWAKI, Takuya MURATA, Makoto YONEMITSU, Kouichiro TAKIGUCHI, Takashi NAKAYAMA, Kimie IMAKAWA, Yasuo FUJII, Hideyuki HATAKEYAMA
  • Patent number: 10843884
    Abstract: A conveying apparatus includes a rotator, a driver, a measuring device, and circuitry. The rotator is configured to convey a medium. The driver is configured to apply a driving force to the rotator to rotate the rotator. The measuring device is configured to measure the driving force applied to the rotator by the driver. The circuitry is configured to: determine, according to the driving force measured, whether to change at least one of frequency and items of information to be acquired for prediction of a defective conveyance of the medium caused by the rotator; and acquire information of at least one of the items according to a result of determination, at a frequency according to the result of determination.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Akiko Tanabe, Takuya Murata, Norio Yamada
  • Publication number: 20200288033
    Abstract: An image forming apparatus is configured to form an image on a recording medium by scanning of the image forming apparatus by a user. The image forming apparatus includes an image forming device and processing circuitry. The image forming device includes a plurality of image forming arrays. Each of the image forming arrays includes an image forming portion configured to form the image. The processing circuitry is configured to set an image forming array to be used to form the image, according to a use mode of the image forming apparatus.
    Type: Application
    Filed: March 6, 2020
    Publication date: September 10, 2020
    Inventors: Ko TOKUMARU, Jun SHIORI, Takuya MURATA, Yuji TANAKA, Takahisa KOIKE
  • Patent number: 10767247
    Abstract: There are provided: an aluminum alloy magnetic disk substrate including: an aluminum alloy base material including an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter, simply referred to as “%”) of Fe, 0.1 to 3.0% of Mn, 0.005 to 1.000% of Cu, and 0.005 to 1.000% of Zn, with the balance of Al and unavoidable impurities; and an electroless Ni—P plated layer formed on a surface of the aluminum alloy base material, in which the peak value (BLEI) of Fe emission intensity at an interface between the electroless Ni—P plated layer and the aluminum alloy base material, as determined by a glow discharge optical emission spectrometry device, is lower than Fe emission intensity (AlEI) in the interior of the aluminum alloy base material, as determined by the glow discharge optical emission spectrometry device; and a method for producing the aluminum alloy magnetic disk substrate.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: September 8, 2020
    Assignees: UACJ Corporation, Furukawa Electric Co., Ltd.
    Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Naoki Kitamura, Takashi Nakayama, Hideyuki Hatakeyama, Ryo Sakamoto, Sadayuki Toda
  • Patent number: 10755738
    Abstract: The present invention provides: an aluminum alloy substrate for magnetic discs with excellent plating surface smoothness; a manufacturing method therefor; and a magnetic disc using said aluminum alloy substrate for magnetic discs. The present invention is an aluminum alloy substrate for magnetic discs, a manufacturing method therefor, and a magnetic disc using said aluminum alloy substrate for magnetic discs, the aluminum alloy substrate being characterized in being obtained from an aluminum alloy containing Mg: 2.0-8.0 mass % (“%” below), Be: 0.00001-0.00200%, Cu: 0.003-0.150%, Zn: 0.05-0.60%, Cr: 0.010-0.300%, Si: 0.060% or less, Fe: 0.060% or less, the balance being obtained from Al and unavoidable impurities.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: August 25, 2020
    Assignees: UACJ Corporation, Furukawa Electric Co., Ltd.
    Inventors: Kotaro Kitawaki, Takuya Murata, Akira Hibino, Naoki Kitamura, Masanobu Onishi, Hideki Takahashi, Satoshi Yamazaki, Sadayuki Toda
  • Publication number: 20200247113
    Abstract: An image recording apparatus includes a recording head including a plurality of nozzles from which ink is ejected, a memory, and one or more hardware processors coupled to the recording head and the memory. The one or more hardware processors are configured to: determine, for each of the plurality of nozzles, whether a position of the corresponding nozzle is a position to eject ink; determine whether a successive ejection operation is necessary for a nozzle out of the plurality of nozzles, whose position is determined as the position to eject ink; and cause ink to be successively ejected at the position to eject ink at a predetermined successive ejection frequency from the nozzle that is determined to have the necessity of the successive ejection operation.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 6, 2020
    Inventors: Jun SHIORI, Takuya MURATA, Takahisa KOIKE, Hiroyuki KIGUCHI, Ko TOKUMARU, Yuji TANAKA
  • Patent number: 10684583
    Abstract: An abnormality detection device is configured to detect abnormality in a subject to be driven by a motor via a drive transmission member. The abnormality detection device includes an output signal acquisition unit, a rotational frequency acquisition unit, and a determining unit. The output signal acquisition unit is configured to acquire a rotational frequency output signal output from the motor. The rotational frequency acquisition unit is configured to acquire a motor rotational frequency calculated from the rotational frequency output signal acquired by the output signal acquisition unit. The determining unit is configured to distinctively determine abnormality in the subject to be driven and abnormality in the motor based on the rotational frequency output signal acquired by the output signal acquisition unit and the motor rotational frequency acquired by the rotational frequency acquisition unit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: June 16, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shogo Nakamoto, Kazuhiro Kobayashi, Keiichi Yoshida, Takuya Murata
  • Patent number: 10599064
    Abstract: A powder-amount detection device includes a first electrode, a second electrode, a third electrode and a voltage detector with the second electrode adjacent to the first electrode on the powder container and have a smaller surface area than a surface area of the first electrode. The third electrode is on a side opposite to the second electrode with the powder container interposed between the third electrode and each of the first electrode and the second electrode. The voltage detector detects voltages of the first electrode and the second electrode by detecting charging and discharging behaviors of the first electrode and the second electrode when a voltage is applied between the third electrode and each of the first electrode and the second electrode for a short time, and detects the amount of powder in the powder container based on the voltages of the first electrode and the second electrode.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: March 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahide Yamashita, Taku Kumiya, Yohei Kushida, Takuya Murata, Keita Maejima
  • Publication number: 20200084336
    Abstract: An image forming apparatus includes an image forming device and circuitry. The image forming device is configured to form an image on a medium. The circuitry is configured to detect a position of the image forming device relative to the medium. The circuitry is further configured to control the image forming device based on the position of the image fanning device detected and image data. The circuitry is further configured to control a system state of the image forming device based on the position of the image forming device associated with movement of the image forming device relative to the medium.
    Type: Application
    Filed: August 22, 2019
    Publication date: March 12, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: YUJI TANAKA, TAKUYA MURATA, KO TOKUMARU
  • Publication number: 20190390304
    Abstract: There are provided: an aluminum alloy magnetic disk substrate including: an aluminum alloy base material including an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter, simply referred to as “%”) of Fe, 0.1 to 3.0% of Mn, 0.005 to 1.000% of Cu, and 0.005 to 1.000% of Zn, with the balance of Al and unavoidable impurities; and an electroless Ni—P plated layer formed on a surface of the aluminum alloy base material, in which the peak value (BLEI) of Fe emission intensity at an interface between the electroless Ni—P plated layer and the aluminum alloy base material, as determined by a glow discharge optical emission spectrometry device, is lower than Fe emission intensity (AlEI) in the interior of the aluminum alloy base material, as determined by the glow discharge optical emission spectrometry device; and a method for producing the aluminum alloy magnetic disk substrate.
    Type: Application
    Filed: January 30, 2018
    Publication date: December 26, 2019
    Inventors: Takuya MURATA, Kotaro KITAWAKI, Makoto YONEMITSU, Naoki KITAMURA, Takashi NAKAYAMA, Hideyuki HATAKEYAMA, Ryo SAKAMOTO, Sadayuki TODA
  • Patent number: 10472194
    Abstract: A current detecting device includes: a drive signal generating unit configured to generate a control signal based on a control voltage value indicating drive force to be applied to a target; a current detecting unit configured to detect a current value output based on the control signal generated by the drive signal generating unit; and a correction unit configured to correct the current value detected by the current detecting unit, based on at least a magnitude of the control voltage value.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: November 12, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takeo Seki, Haruyuki Suzuki, Takuya Murata, Hiroyuki Kiguchi