Patents by Inventor Wataru Takahashi

Wataru Takahashi 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: 11873804
    Abstract: A capacity control valve for controlling a capacity of a fluid includes: a valve housing; a main valve closing and opening a communication between a Pc port and a Pd port when a main valve portion of a main valve element driven by a drive force of a solenoid comes into contact with and separates from a main valve seat; a pressure-sensitive valve which is opened by an ambient pressure; a hollow tube member which forms a part of the pressure-sensitive valve and allows the Pc port to communicate with a Ps port through a hollow communication path formed therein when the pressure-sensitive valve is opened; and an auxiliary communication path allows the Pc port to communicate with the Ps port independently of the pressure-sensitive valve, and the auxiliary communication path is configured to be able to increase a flow path cross-sectional area after the main valve is closed.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: January 16, 2024
    Inventors: Daichi Kurihara, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Masahiro Hayama, Takahiro Ejima, Wataru Takahashi
  • Patent number: 11873805
    Abstract: A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod driven by a solenoid, a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with a movement of the rod.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: January 16, 2024
    Inventors: Masahiro Hayama, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi, Keigo Shirafuji
  • Patent number: 11867312
    Abstract: In a capacity control valve, a position of a valve element is changed by drawing a movable iron core to a fixed iron core with magnetic force by energization of an electromagnetic coil. The iron core on one side includes a projected portion on the radially outer side, the iron core on the other side includes a projected portion on the radially inner side, and these projected portions are capable of being loosely fitted to each other when the movable iron core is drawn to the fixed iron core. The projected portion is formed to be smaller than an opposing surface of the iron core facing an effective magnetic force surface of a distal end of the projected portion and formed in a tapered shape.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: January 9, 2024
    Inventors: Masahiro Hayama, Kohei Fukudome, Toshinori Kanzaki, Wataru Takahashi, Keigo Shirafuji
  • Patent number: 11858287
    Abstract: An image forming system includes a sheet processing apparatus, a heat presser, an image forming apparatus, and control circuitry. The sheet processing apparatus separates a two-ply sheet in which two sheets are overlaid and bonded together at a portion of the two-ply sheet, and sandwiches a sheet medium between the sheets of the two-ply sheet. The heat presser heats and presses the two-ply sheet. The control circuitry performs a first mode to cause the sheet processing apparatus to sandwich the sheet medium, on which an image has been formed by the image forming apparatus, between the two sheets of the two-ply sheet and cause the heat presser to laminate the two-ply sheet, and a second mode to cause the heat presser to laminate a sheet set that includes the sheet medium sandwiched between the two sheets of the two-ply sheet by a user.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: January 2, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yohsuke Haraguchi, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Wataru Nozaki
  • Publication number: 20230415260
    Abstract: Laser processing head (10) includes housing (11) and a plurality of optical components. Housing (11) includes first and second light entrance ports (12a) and (12b) through which first and second laser beams (A) and (B) are incident, and light irradiation port (13). Second laser beam (B) has a wavelength different from first laser beam (A). The plurality of optical components include bend mirror (30), dichroic mirror (40), aperture (71), and detection-side condensing lens (70). First and second laser beams (A) and (B) transmitted through detection-side condensing lens (70) are received by image sensor (60). Aperture (71) is configured to be able to reduce diameters of first and second laser beams (A) and (B) incident on detection-side condensing lens (70).
    Type: Application
    Filed: September 10, 2023
    Publication date: December 28, 2023
    Inventors: HISAYUKI OGUCHI, WATARU TAKAHASHI
  • Publication number: 20230415261
    Abstract: Laser processing head (10) includes a bend mirror that bends a second laser beam in a direction intersecting a first laser beam; a dichroic mirror that transmits most of the first laser beam and reflects most of the second laser beam; a workpiece-side condensing lens that condenses the most of the each laser beam to irradiate the workpiece; an image sensor that receives a rest of the first laser beam reflected by the dichroic mirror and a rest of the second laser beam transmitted through the dichroic mirror; a detection-side condensing lens that condenses the rest of the each laser beam to irradiate the image sensor; and an adjuster that adjusts a workpiece-side condensing state on an image plane on a workpiece side. The image sensor detects a detection-side condensing state on an image plane on an image sensor side. The workpiece-side condensing state is adjusted by the adjuster based on the detection-side condensing state.
    Type: Application
    Filed: September 12, 2023
    Publication date: December 28, 2023
    Inventors: HISAYUKI OGUCHI, WATARU TAKAHASHI
  • Patent number: 11851301
    Abstract: A sheet processing apparatus laminates a partially joined two-ply sheet and a sheet medium inserted in the two-ply sheet. The sheet processing apparatus includes a heat presser, an information acquisition device, and control circuitry. The heat presser heats and presses the two-ply sheet and the sheet medium. The information acquisition device acquires information on the two-ply sheet and the sheet medium. The control circuitry sets a fixing temperature of the heat presser in accordance with the information of the two-ply sheet and the sheet medium acquired by the information acquisition device.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: December 26, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Nozaki, Tomohiro Furuhashi, Yoshito Suzuki, Wataru Takahashi, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Sho Asano
  • Patent number: 11845254
    Abstract: A sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet separation device includes a conveyance roller pair and circuitry. The conveyance roller pair is configured to convey the two-ply sheet while nipping the two-ply sheet, when separating the non-bonding portion of the two-ply sheet. The circuitry is configured to control sheet conveyance. The circuitry is configured to stop the conveyance roller pair, cause a leading end of the two-ply sheet conveyed toward the conveyance roller pair to contact a nip region of the conveyance roller pair while the conveyance roller pair is stopped, and start the conveyance roller pair to rotate to nip the two-ply sheet.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: December 19, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki
  • Patent number: 11846899
    Abstract: An image forming apparatus includes a rotatable image bearing member and a rotatable developing member to carry developer made up of toner particles and carrier particles adhered to surfaces of the toner particles. Where a pressing force pressing the developing member against the image bearing member is F1, a total number of the carrier particles interposed between the toner particles and the image bearing member is N1, and an adhesion Ft between a carrier particle and a toner particle, measured when the carrier particle is pressed against the toner particle with F1/N1 that is a pressing force per unit carrier particle, and an adhesion Fdr1 between the carrier particle and the image bearing member, measured when the carrier particle is pressed against the image bearing member with F1/N1, satisfy Ft?Fdr1.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: December 19, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuichi Tetsuno, Shinji Katagiri, Koji An, Hiroko Yokoyama, Wataru Takahashi, Shohei Ishio, Takayuki Tanaka, Tomonori Matsunaga
  • Patent number: 11839501
    Abstract: An image generating device for generating an image which is an X-ray image of an area including a bone portion of a subject with the bone portion removed has a control unit 70 including: a DRR imager 81 configured to generate a first DRR image of an area including a bone portion and a second DRR image showing the bone portion, by performing, for a set of CT image data of an area including the bone portion of a subject, a virtual fluoroscopic projection simulating a geometric fluoroscopy condition of an X-ray irradiator and an X-ray detector for the subject; a training section 82 configured to generate a machine learning model for recognizing the bone portion, by performing machine learning using the first DRR image and the second DRR image serving as a training image; an image converter 83 configured to perform conversion of the X-ray image of the area including the bone portion of the subject, using the machine learning model trained in the training section 82, to generate an image showing the bone portion;
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: December 12, 2023
    Assignee: Shimadzu Corporation
    Inventors: Wataru Takahashi, Shota Oshikawa
  • Patent number: 11830195
    Abstract: A training label image correction method includes performing a segmentation process on an input image (11) of training data (10) by a trained model (1) using the training data to create a determination label image (14), comparing labels of corresponding portions in the determination label image (14) and a training label image (12) with each other, and correcting label areas (13) included in the training label image based on label comparison results.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 28, 2023
    Assignee: Shimadzu Corporation
    Inventors: Wataru Takahashi, Ayako Akazawa, Shota Oshikawa
  • Patent number: 11821540
    Abstract: A capacity control valve in which control precision is high is provided. A capacity control valve V includes a valve housing provided with a suction port through which a suction fluid of suction pressure Ps passes, and a control port through which a control fluid of control pressure Pc passes, a pressure drive portion that receives a force in the contracting direction from the suction fluid, and a main valve formed by a valve element that receives a force in the valve opening direction from the pressure drive portion, and a valve seat with and from which the valve element is brought into contact and separated. The valve element is arranged to receive a force in the closing direction from the control fluid.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: November 21, 2023
    Inventors: Masahiro Hayama, Kohei Fukudome, Toshinori Kanzaki, Wataru Takahashi, Keigo Shirafuji
  • Publication number: 20230370040
    Abstract: A variable circuit includes a switch including a plurality of input terminals and a plurality of output terminals and an external wiring line. The multiple input terminals include a first input terminal to which a first input signal is inputted and a second input terminal to which a second input signal is inputted. The multiple output terminals include a first output terminal from which a first output signal is outputted and a second output terminal from which a second output signal is outputted. The switch is capable of forming at least one internal connection path electrically connecting any one of the multiple input terminals and any one of the multiple output terminals. The external wiring line is disposed outside the switch and is configured to electrically connect the second output terminal to the second input terminal.
    Type: Application
    Filed: July 28, 2023
    Publication date: November 16, 2023
    Inventors: Katsuya IKEGAMI, Wataru TAKAHASHI
  • Publication number: 20230358331
    Abstract: A capacity control valve includes a valve housing provided with a suction port through which a suction fluid of suction pressure passes, and a control port through which a control fluid of control pressure passes, a valve element configured to be driven by a solenoid, a spring that biases the valve element in the direction opposite to the driving direction by the solenoid, and a CS valve formed by a CS valve seat and the valve element and configured for opening and closing a communication between the control port and the suction port by movement of the valve element. The capacity control valve further includes a pressure receiving portion to which force in accordance with discharge pressure is applied in the axial direction of the valve element.
    Type: Application
    Filed: July 21, 2023
    Publication date: November 9, 2023
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Toshinori KANZAKI, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Patent number: 11801705
    Abstract: An image forming system includes an image forming apparatus, a sheet processing device, and control circuitry. The image forming apparatus forms an image on a sheet. The sheet processing device performs post-processing on the sheet. The sheet processing device includes a first conveyance path through which the sheet is conveyed and subjected to the post-processing and a second conveyance path through which the sheet is conveyed without the post-processing. In response to an instruction of print jobs including both a print job of one or N copies subjected to the post-processing and a print job not subjected to the post-processing, the circuitry executes the job not subjected to the post-processing during execution of an M-th copy of the job subjected to the post-processing and causes the sheet to be conveyed through the second conveyance path, where N is two or greater and M satisfies 1?M<N.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: October 31, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Sho Asano, Wataru Takahashi, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki, Tomohiro Furuhashi
  • Publication number: 20230313789
    Abstract: A valve includes: a valve housing provided with a primary pressure port and a secondary pressure port; a valve body configured to be driven by a solenoid; a valve seat on which the valve body is seated; and a spring that urges the valve body in a valve opening direction. The valve seat includes a first valve seat and a second valve seat disposed on a radially inner side of the first valve seat. The second valve seat is configured for moving in a direction toward the valve body due to a differential pressure between a primary pressure and a secondary pressure.
    Type: Application
    Filed: August 17, 2021
    Publication date: October 5, 2023
    Inventors: Toshinori KANZAKI, Wataru TAKAHASHI, Masahiro HAYAMA, Kohei FUKUDOME, Keigo SHIRAFUJI
  • Publication number: 20230296178
    Abstract: A valve includes a valve housing provided with an inlet port and an outlet port a valve body to be driven by a drive source a spring that urges the valve bodyin a direction opposite a direction of driving by the drive source and a valve seat formed at an edge of a through-flow passage The valve body and the valve seat cooperatively form a poppet valve. The valve is configured to control a flow rate in accordance with a movement of the valve body Flow passages on a downstream side of the poppet valve are provided with increase regions where a flow passage cross-sectional area tends to increase toward the downstream side.
    Type: Application
    Filed: July 27, 2021
    Publication date: September 21, 2023
    Inventors: Toshinori KANZAKI, Wataru TAKAHASHI, Masahiro HAYAMA, Kohei FUKUDOME, Keigo SHIRAFUJI
  • Publication number: 20230296187
    Abstract: A capacity control valve capable of being downsized with the small number of parts is provided. A capacity control valve includes a valve housing provided with a suction port through which a suction fluid of suction pressure Ps passes, and a control port through which a control fluid of control pressure Pc passes, a valve element configured to be driven by a solenoid, a spring that biases the valve element in a direction opposite to a driving direction of the solenoid, and a CS valve formed by a CS valve seat 10a and the valve element and configured to open and close a communication between the control port and the suction port in accordance with a movement of the valve element. The control pressure Pc is controlled by opening and closing the CS valve.
    Type: Application
    Filed: May 23, 2023
    Publication date: September 21, 2023
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Toshinori KANZAKI, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Patent number: 11754194
    Abstract: A capacity control valve includes a valve housing provided with a suction fluid supply chamber to which a suction fluid of suction pressure Ps is supplied, and a control fluid supply chamber to which a control fluid of control pressure Pc is supplied, a CS valve formed by a CS valve element driven in the axial direction by a solenoid, and a CS valve seat provided in a communication passage between the control fluid supply chamber and the suction fluid supply chamber, the CS valve being connectable to and separable from the CS valve seat, and a pressure drive portion arranged in the control fluid supply chamber in a sealed manner and biasing the CS valve element in the opposite direction to the driving direction by the solenoid.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: September 12, 2023
    Inventors: Masahiro Hayama, Kohei Fukudome, Toshinori Kanzaki, Wataru Takahashi, Keigo Shirafuji
  • Publication number: 20230279952
    Abstract: A valve includes a valve housing provided with an inlet port and an outlet port; a valve body configured to be driven by a drive source; a spring that urges the valve body in a direction opposite a direction of driving by the drive source. A valve seat is formed at an edge of a through-flow passage. The valve body and the valve seat forms a poppet valve that controls a flow rate in accordance with a movement of the valve body. A flow passage on a downstream side of the poppet valve is provided with a reduction region where a flow passage cross-sectional area tends to decrease toward a downstream side.
    Type: Application
    Filed: July 27, 2021
    Publication date: September 7, 2023
    Inventors: Toshinori KANZAKI, Wataru TAKAHASHI, Masahiro HAYAMA, Kohei FUKUDOME, Keigo SHIRAFUJI