Patents by Inventor Jun Miura

Jun Miura 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: 11183209
    Abstract: A magnetic recording medium in a shape of a tape that is long in a longitudinal direction and is short in a width direction is provided, the medium including: a base material; and a magnetic layer, in which the magnetic layer includes a data band long in the longitudinal direction in which a data signal is to be written, and a servo band long in the longitudinal direction in which a servo signal is written, and in the magnetic layer, a degree of vertical orientation is greater than or equal to 65%, a half width of a solitary waveform in a reproduction waveform of the servo signal is less than or equal to 195 nm, a thickness of the magnetic layer is less than or equal to 90 nm, and a thickness of the base material is less than or equal to 4.2 ?m.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: November 23, 2021
    Assignee: Sony Corporation
    Inventors: Minoru Yamaga, Tooru Sato, Toshiaki Miura, Takanobu Iwama, Jun Takahashi
  • Publication number: 20210359620
    Abstract: A semiconductor unit includes a semiconductor device, a controller, and a resistor. The semiconductor device includes a transistor arranged between a positive electrode of a battery and an inverter circuit electrically connected to the battery. The controller is connected to a control terminal of the transistor and configured to control the transistor. The resistor arranged between the control terminal and the controller. The controller controls the transistor so that when a current flowing to the transistor is greater than or equal to a threshold value, the transistor is deactivated. The resistor has a resistance value that is greater than or equal to 100?.
    Type: Application
    Filed: October 30, 2019
    Publication date: November 18, 2021
    Inventors: Mineo MIURA, Masashi HAYASHIGUCHI, Jun TERADA
  • Publication number: 20210359677
    Abstract: A semiconductor device includes a first terminal for a battery, a second terminal for an inverter circuit, and a transistor. The semiconductor device is configured to control a voltage applied to a control terminal of the transistor to allow supply of a current from the first terminal to the second terminal and allow supply of a current from the second terminal to the first terminal. A withstand voltage between the first terminal and the second terminal is greater than or equal to a voltage between the battery and the inverter circuit.
    Type: Application
    Filed: October 30, 2019
    Publication date: November 18, 2021
    Inventors: Mineo MIURA, Masashi HAYASHIGUCHI, Jun TERADA
  • Patent number: 11131023
    Abstract: A film deposition apparatus includes a process chamber and a turntable provided in the process chamber. The turntable includes a substrate receiving region to receive a substrate thereon and provided along a circumferential direction of the turntable. A source gas supply unit extending along a radial direction of the turntable is provided above the turntable with a first distance from the turntable such that the source gas supply unit covers an entire length of the substrate receiving region in the radial direction. An axial-side supplementary gas supply unit is provided in the vicinity of the source gas supply unit and above the turntable with a second distance from the turntable. The second distance is longer than the first distance. The axial-side supplementary gas supply unit covers a predetermined region of the substrate receiving region on the axial side in the radial direction of the turntable.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 28, 2021
    Assignee: Tokyo Electron Limited
    Inventors: Shigehiro Miura, Jun Sato
  • Patent number: 10935904
    Abstract: When a new development device is mounted, a control unit of an image forming apparatus identifies a development device type. When an identification result corresponds to a first development device containing a first amount of developer, an agitation member operates in a first mode. When the identification result corresponds to a second development device containing a second amount of developer higher than the first amount, the agitation member operates in a second mode. A second operation amount of the agitation member in the second mode is higher than a first operation amount of the agitation member in the first mode. A developer containing chamber of the development device is provided with a discharge opening from which the developer is discharged. The operations in the first and second modes are performed after a sealing member sealing the discharge opening is removed and also before a normal image forming process is executed.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: March 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Miura, Takuya Kitamura, Kazunari Hagiwara, Takashi Hiramatsu, Koji An
  • Publication number: 20210033718
    Abstract: To detect an object present in the vicinity.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 4, 2021
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Hiroyuki KOBAYASHI, Taishi KAGIMOTO, Tadataka WAKABISHI, Sadao MATSUSHIMA, Hajime NAMIKI, Jun MIURA, Tomoki KAWAMURA, Noriyuki SHOJI
  • Patent number: 10866533
    Abstract: An image forming apparatus using a contact charging method includes a control unit capable of executing cleaning in a post-rotation step at the end of a job and in an inter-image step during execution of the job. The cleaning involves moving toner adhering to a charging member from the charging member to an image bearing member. The job is a series of operations started by a predetermined start instruction and involving forming an image on one or more recording materials and outputting the one or more recording materials. When an instruction to start the next job is input during execution of cleaning in the post-rotation step, the control unit stops the cleaning in the middle of the execution, starts the next job, and adjusts timing for executing subsequent cleaning on the basis of information relating to the amount of cleaning executed before being stopped in the middle of the execution.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: December 15, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Kawamoto, Kazuhiro Okubo, Yuji Kawaguchi, Masanori Tanaka, Jun Miura
  • Patent number: 10719028
    Abstract: A process cartridge includes a developer carrier including a dielectric portion and a conductive portion on a surface thereof, a regulation member, and an image carrier disposed so as to come into contact with the developer carrier. The developer carrier and the image carrier are rotationally driven such that a surface of the developer carrier and a surface of the image carrier move at linear velocities different from each other at a contact portion, and the developer remaining on the image carrier after the developer image is transferred from the image carrier, is collected by the developer carrier at the contact portion.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: July 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji An, Kazunari Hagiwara, Takuya Kitamura, Takashi Hiramatsu, Jun Miura
  • Publication number: 20200201202
    Abstract: An image forming apparatus includes a rotatable photosensitive member. A charging member charges a surface of the photosensitive member. A developing roller carries developer. The developing roller supplies the developer in normal polarity to the surface of the photosensitive member. A regulating member regulates the developer on the developing roller. A common voltage applying unit applies charging voltage and regulating voltage. The regulating voltage is applied with the developing roller rotating such that a potential difference in a direction in which electrostatic force from the regulating member to the developing roller acts on the developer charged in the normal polarity, is formed between the regulating member and the developing roller, and in which the charging voltage to be applied in a non-image-forming period is controlled so as to be smaller in absolute value than in an image-forming period.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 25, 2020
    Inventors: Jun Miura, Yuki Yamamoto, Takashi Hiramatsu, Masanori Tanaka
  • Patent number: 10591856
    Abstract: A roller for use with an image fixing device for fixing an image on a recording material includes a core metal, and an elastic layer provided around the core metal. In the elastic layer, a filler bundle including a plurality of fiber-like fillers is dispersed.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: March 17, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yutaka Sato, Kazuhiro Doda, Kohei Wakatsu, Tsuguhiro Yoshida, Jun Miura
  • Patent number: 10571823
    Abstract: In an image forming apparatus which includes a plurality of image forming units each including an image bearing member, a contact charging member, and a developer bearing member for forming toner of normal polarity, and which, in a printing operation, applies a charging bias having a first direction, in a cleaning operation, applies a charging bias having a second direction, and recovers residual toner remaining on the image bearing member which was not used for printing by the developer bearing member, before performing the cleaning operation, when successively performing the printing operation on a plurality of recording materials including a first recording material and a second recording material, which is used for printing following the first recording material, the charging voltage larger in absolute value in the printing operation for the second recording material than in the printing operation for the first recording material is applied.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: February 25, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Okubo, Masanori Tanaka, Takahiro Kawamoto, Yuji Kawaguchi, Jun Miura
  • Publication number: 20200050126
    Abstract: A process cartridge includes a developer carrier including a dielectric portion and a conductive portion on a surface thereof, a regulation member, and an image carrier disposed so as to come into contact with the developer carrier. The developer carrier and the image carrier are rotationally driven such that a surface of the developer carrier and a surface of the image carrier move at linear velocities different from each other at a contact portion, and the developer remaining on the image carrier after the developer image is transferred from the image carrier, is collected by the developer carrier at the contact portion.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Inventors: Koji An, Kazunari Hagiwara, Takuya Kitamura, Takashi Hiramatsu, Jun Miura
  • Patent number: 10558138
    Abstract: An image forming apparatus includes image forming units each of which includes an image bearing member, a contact charging member, and a developer bearing member of a toner, applies a charging bias in a direction in which the toner moves from the image bearing member to the charging member in an image forming period, and applied a charging bias of an opposite polarity relative to that in the image formation in a cleaning period, and collects the toner by the developer bearing member. In consecutive image formation, a charging bias in the image forming period is applied in a first interval period and which is between first and second image forming periods and a second interval period which is between second and third image forming periods. An absolute value of a charging bias applied in the second interval period is larger than that applied in the first interval period.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: February 11, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Tanaka, Kazuhiro Okubo, Takahiro Kawamoto, Yuji Kawaguchi, Jun Miura
  • Patent number: 10545440
    Abstract: Provided is a pressure roller for an image heating device that forms a nip part together with a heating member, the pressure roller including at least a mandrel, a first elastic layer, and a second elastic layer provided between the mandrel and the first elastic layer, wherein the first elastic layer has open-cell voids, is made of rubber, and has a thickness of at least 50 ?m and less than 500 ?m, and the second elastic layer is made of solid rubber.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shoichiro Ikegami, Naofumi Murata, Yutaka Arai, Jun Miura
  • Patent number: 10539906
    Abstract: In an image forming apparatus, a control unit performs a control to cause an exposing unit to expose a plurality of image bearing members at different times to form exposure regions on the plurality of image bearing members, to acquire results acquired by applying direct current voltage lower than discharge start voltage to a plurality of abutting members by an applying unit when the exposure regions pass by abutting parts against the abutting members and detected by a detecting unit, and to, based on the acquired results of the detections, acquire information regarding the surface potentials of the plurality of image bearing members.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: January 21, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Kawaguchi, Kazuhiro Okubo, Takahiro Kawamoto, Masanori Tanaka, Jun Miura
  • Patent number: 10534297
    Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: January 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jun Miura, Yutaka Arai, Takeshi Suzuki, Akeshi Asaka, Shigeaki Takada, Masaaki Takahashi, Yo Imaizumi
  • Publication number: 20190324387
    Abstract: A roller for use with an image fixing device for fixing an image on a recording material includes a core metal, and an elastic layer provided around the core metal. In the elastic layer, a filler bundle including a plurality of fiber-like fillers is dispersed.
    Type: Application
    Filed: April 1, 2019
    Publication date: October 24, 2019
    Inventors: Yutaka Sato, Kazuhiro Doda, Kohei Wakatsu, Tsuguhiro Yoshida, Jun Miura
  • Publication number: 20190302638
    Abstract: An image forming apparatus includes image forming units each of which includes an image bearing member, a contact charging member, and a developer bearing member of a toner, applies a charging bias in a direction in which the toner moves from the image bearing member to the charging member in an image forming period, and applied a charging bias of an opposite polarity relative to that in the image formation in a cleaning period, and collects the toner by the developer bearing member. In consecutive image formation, a charging bias in the image forming period is applied in a first interval period and which is between first and second image forming periods and a second interval period which is between second and third image forming periods. An absolute value of a charging bias applied in the second interval period is larger than that applied in the first interval period.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 3, 2019
    Inventors: Masanori Tanaka, Kazuhiro Okubo, Takahiro Kawamoto, Yuji Kawaguchi, Jun Miura
  • Patent number: 10429766
    Abstract: A developer carrying member is disposed below a storage chamber of a frame and has a surface configured such that a plurality of dielectric portions are dispersed on a conductive portion, an upper region of the storage chamber of the frame is enlarged further in a horizontal direction than a lower region in which the developer carrying member is disposed, and the frame has a lower guide surface and includes a curved surface having a tangent plane inclined at a first angle equal to or greater than a degree of an angle of repose of the developer and less than 90 degrees, in an inner wall of the lower region, and an upper guide surface includes a curved surface having a tangent plane inclined at a second angle that is less than the first angle relative to a horizontal plane in an inner wall of the upper region.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: October 1, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Okubo, Jun Miura, Takaaki Shinkawa
  • Publication number: 20190278198
    Abstract: When a new development device is mounted, a control unit of an image forming apparatus identifies a development device type. When an identification result corresponds to a first development device containing a first amount of developer, an agitation member operates in a first mode. When the identification result corresponds to a second development device containing a second amount of developer higher than the first amount, the agitation member operates in a second mode. A second operation amount of the agitation member in the second mode is higher than a first operation amount of the agitation member in the first mode. A developer containing chamber of the development device is provided with a discharge opening from which the developer is discharged. The operations in the first and second modes are performed after a sealing member sealing the discharge opening is removed and also before a normal image forming process is executed.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Inventors: Jun Miura, Takuya Kitamura, Kazunari Hagiwara, Takashi Hiramatsu, Koji An