Patents by Inventor Takashi Mitsuyasu

Takashi Mitsuyasu 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: 11819936
    Abstract: A wire electrode feeding apparatus or the like is provided, suitable for feeding a wire electrode along its original path without deviating from its original path. A conversion unit 9 feeds the wire electrode from a feeding inlet 21 to a feeding outlet 25 using a machining liquid. A roller 23 changes the feeding direction of the wire electrode. A discharging unit 27 discharges the machining liquid toward the feeding outlet 25 in a direction tangential to the contact face of the roller 23, to generate a flow of the machining liquid. On the other hand, a diverted flow path for the machining liquid is defined along the contact face of the roller 23 from the feeding outlet 25 side to the feeding inlet 21 side. An intake unit 29 takes in air according to the pressure of the machining liquid to supply the air to the diverted flow path.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: November 21, 2023
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Takashi Mitsuyasu, Yoshihiro Ito
  • Publication number: 20220379648
    Abstract: An image forming apparatus includes: a pretreatment section that applies a precoat liquid to a printing surface of a continuous recording medium to be transported; a printing section that sprays ink onto the continuous recording medium to which the precoat liquid is applied; and a transport section that transports the continuous recording medium along a predetermined path. The transport section includes at least one pass roller that is disposed between the pretreatment section and the printing section, the pass roller transporting the continuous recording medium to which the precoat liquid is applied toward the printing section and coming into contact with the printing surface of the continuous recording medium. A surface of the pass roller is subjected to water-repellent finishing for the precoat liquid.
    Type: Application
    Filed: August 10, 2022
    Publication date: December 1, 2022
    Applicant: FUJIFILM Corporation
    Inventors: Takashi MITSUYASU, Hidetoshi Kawasaki
  • Patent number: 11407050
    Abstract: An electrical discharge machining device provided, using a floating capacitance to provide a machining target with improved surface roughness. An electrical discharge machining device 1 includes a current supply circuit 3 that supplies a current to a gap between an electrode 17 and a machining target 19 so as to provide electrical discharge machining. A floating capacitance portion 21 occurs between the electrode 17 and the machining target 19 in the electrical discharge machining. The floating capacitance portion 21 supplies its stored charge to the gap in the electrical discharge machining. A capacitor 11 stores a charge before the floating capacitance portion 21 is discharged. After the floating capacitance portion is discharged, the capacitor 11 charges the floating capacitance portion 21. The floating capacitance portion 21 is discharged again after it is charged. Such an operation generates a pulse current, thereby providing electrical discharge machining.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 9, 2022
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Takashi Mitsuyasu, Keisuke Tasaki
  • Publication number: 20220118538
    Abstract: A wire electrode feeding apparatus or the like is provided, suitable for feeding a wire electrode along its original path without deviating from its original path. A conversion unit 9 feeds the wire electrode from a feeding inlet 21 to a feeding outlet 25 using a machining liquid. A roller 23 changes the feeding direction of the wire electrode. A discharging unit 27 discharges the machining liquid toward the feeding outlet 25 in a direction tangential to the contact face of the roller 23, to generate a flow of the machining liquid. On the other hand, a diverted flow path for the machining liquid is defined along the contact face of the roller 23 from the feeding outlet 25 side to the feeding inlet 21 side. An intake unit 29 takes in air according to the pressure of the machining liquid to supply the air to the diverted flow path.
    Type: Application
    Filed: March 11, 2020
    Publication date: April 21, 2022
    Inventors: Takashi MITSUYASU, Yoshihiro ITO
  • Patent number: 11219961
    Abstract: It is a purpose of the present invention to provide a wire electrical discharge machining system allowing a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by means of a corresponding dedicated apparatus. Also, the core processing may be performed by means of a single common apparatus.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: January 11, 2022
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Takashi Mitsuyasu, Yoshihiro Ito, Takayasu Sakatani, Hiroaki Fujii
  • Patent number: 11213905
    Abstract: A wire electrical discharge machining system allows a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by a corresponding dedicated apparatus. Also, the core processing may be performed by a single common apparatus. The robot unit 17 mounts and collects the workpiece so as to allow these wire electrical discharge machining apparatuses to effectively operate, thereby providing wire electrical discharge machining with improved efficiency for the overall system.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: January 4, 2022
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Takashi Mitsuyasu, Yoshihiro Ito, Takayasu Sakatani, Hiroaki Fujii
  • Publication number: 20210187645
    Abstract: It is a purpose of the present invention to provide a wire electrical discharge machining system allowing a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by means of a corresponding dedicated apparatus. Also, the core processing may be performed by means of a single common apparatus.
    Type: Application
    Filed: January 31, 2018
    Publication date: June 24, 2021
    Inventors: Takashi MITSUYASU, Yoshihiro ITO, Takayasu SAKATANI, Hiroaki FUJII
  • Publication number: 20200009670
    Abstract: An electrical discharge machining device provided, using a floating capacitance to provide a machining target with improved surface roughness. An electrical discharge machining device 1 includes a current supply circuit 3 that supplies a current to a gap between an electrode 17 and a machining target 19 so as to provide electrical discharge machining. A floating capacitance portion 21 occurs between the electrode 17 and the machining target 19 in the electrical discharge machining. The floating capacitance portion 21 supplies its stored charge to the gap in the electrical discharge machining. A capacitor 11 stores a charge before the floating capacitance portion 21 is discharged. After the floating capacitance portion is discharged, the capacitor 11 charges the floating capacitance portion 21. The floating capacitance portion 21 is discharged again after it is charged. Such an operation generates a pulse current, thereby providing electrical discharge machining.
    Type: Application
    Filed: September 18, 2019
    Publication date: January 9, 2020
    Inventors: Takashi MITSUYASU, Keisuke TASAKI
  • Patent number: 10512979
    Abstract: An electrical discharge machining device is provided, using a floating capacitance to provide a machining target with improved surface roughness. An electrical discharge machining device 1 includes a current supply circuit 3 that supplies a current to a gap between an electrode 17 and a machining target 19 so as to provide electrical discharge machining. A floating capacitance portion 21 occurs between the electrode 17 and the machining target 19 in the electrical discharge machining. The floating capacitance portion 21 supplies its stored charge to the gap in the electrical discharge machining. A capacitor 11 stores a charge before the floating capacitance portion 21 is discharged. After the floating capacitance portion is discharged, the capacitor 11 charges the floating capacitance portion 21. The floating capacitance portion 21 is discharged again after it is charged. Such an operation generates a pulse current, thereby providing electrical discharge machining.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 24, 2019
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Takashi Mitsuyasu, Keisuke Tasaki
  • Patent number: 10301144
    Abstract: The present invention provides a wire electrode supply apparatus for suppressing wire electrode driving vibration for wire electrodes having a wide range of diameters and formed of various materials, thereby improving processed surface roughness. The wire electrode supply apparatus includes a back tension adjustment unit that adjusts a back tension of the wire electrode drawn from a source bobbin, a tension applying unit, and a constant pressure ejecting unit that ejects the wire electrode with constant pressure and rate after the transference via the tension applying unit and an electrical discharge machining unit. The tension applying unit includes a low tension applying unit that applies a tension to the wire electrode, and a high tension applying unit that can supply a higher tension. After the high tension applying unit supplies a tension, the low tension applying unit supplies a tension. Otherwise, only the low tension applying unit supplies a tension.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 28, 2019
    Assignee: Seibu Electric & Machinery Co., Ltd.
    Inventors: Yoshihiro Ito, Takashi Mitsuyasu
  • Publication number: 20190151971
    Abstract: A tension control method or the like is provided, configured to appropriately control a wire electrode, thereby providing high-precision machining compared with control using a tension detector with feedback control. An EDM apparatus includes a correspondence relation storage unit that stores a correspondence relation between a wire electrode tension between a feed roller and a winding roller and a speed difference between the feed motor and the winding motor or the like. A setting value storage unit stores user-set wire electrode setting values for the feed speed and tension. A determination unit determines the driving speed difference between the feed motor and the winding motor or the like based on the tension setting value, etc., with reference to the correspondence relation storage unit. A motor control unit controls the feed and winding motors using the feed speed setting value, the driving speed difference determined by the determination unit, etc.
    Type: Application
    Filed: August 25, 2017
    Publication date: May 23, 2019
    Inventors: Yoshihiro ITO, Keisuke TASAKI, Takayasu SAKATANI, Takashi MITSUYASU
  • Publication number: 20190022780
    Abstract: It is a purpose of the present invention to provide a wire electrical discharge machining system allowing a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by means of a corresponding dedicated apparatus. Also, the core processing may be performed by means of a single common apparatus.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 24, 2019
    Inventors: Takashi MITSUYASU, Yoshihiro ITO, Takayasu SAKATANI, Hiroaki FUJII
  • Patent number: 10048462
    Abstract: A manufacturing method of an imaging module and an imaging module manufacturing apparatus capable of performing positioning of an imaging element unit and a lens unit with high accuracy are provided. A manufacturing apparatus 200 holds a lens unit 10 and an imaging element unit 20 on a Z axis, and images a measurement chart by an imaging element 27 in a state where a probe 113a comes into contact with each of terminals 14A to 14F electrically connected to an x-direction VCM 16A, a y-direction VCM 16C, and a z-direction VCM 16E of the lens unit 10 and electricity flows to a lens drive unit 16 inside the lens unit 10. A contactor of the probe 113a is configured of a non-magnetic material.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 14, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Mitsuyasu
  • Patent number: 10020342
    Abstract: A manufacturing device holds a lens unit on a Z axis that is orthogonal to a chart surface of a measurement chart, holds an image pickup element unit on the Z axis, picks up an image of the measurement chart by an image pickup element while changing a Z-axis direction position of the image pickup element unit held on the Z axis in a state in which current is applied to a second lens drive unit and a third lens drive unit of the lens unit held on the Z axis, adjusts the position and a tilt of the image pickup element unit relative to the lens unit on the basis of image pickup signals that are obtained in the case where the image of the measurement chart is picked up, and fixes the image pickup element unit to the lens unit.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: July 10, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Fujinami, Takashi Mitsuyasu
  • Patent number: 9751157
    Abstract: A process for identifying existence of a welded spot on a cut-out part and retention of the cut-out part on a workpiece in a wire electrode is disclosed which makes it possible to go ahead process steps while identifying automatically the retention of the cut-out part on a workpiece, ensuring unmanned work of the wire electrode discharge processor. The process includes an inspection step to detect whether the wire electrode comes into contact with a welded spot while moving the wire electrode along the cutting path of kerf in the workpiece, after the wire electrode has come into contact with the welded spot, a step goes ahead to one of next procedures, and after the wire electrode has come into no contact with the welded spot, a step goes ahead to generate an alarm and the wire electrical discharge is ceased.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 5, 2017
    Assignee: SEIBU ELECTRIC & MACHINERY CO., LTD.
    Inventors: Takashi Mitsuyasu, Masatoshi Kawano
  • Patent number: 9724775
    Abstract: In a method of welding a cut-out part with a workpiece at a preselected area in a thickness direction of the workpiece in a wire electrical discharge machining to retain temporarily or tentatively the part on the workpiece, a wire electrode 5 tilted in posture cuts the workpiece 6 to form a slant cutting surface 30 at a spark discharge location in a desired contour 21 in the workpiece 6. The wire electrode 5 after kept in an upright posture executes the welding process on the workpiece 6 along the slant cutting surface. A plurality of the welded spots is formed over a preselected length at preselected areas in the thickness direction of the workpiece 6. Even if the cut-out part 26 weighs more or the spark discharge is executed on the workpiece 6 overlapped one on the other, the welding spot 20 is formed in the thickness direction of the workpiece 6 adequately depending on the working situation to tentatively retain the cut-out part 26 on the workpiece 6.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: August 8, 2017
    Assignee: SEIBU ELECTRIC & MACHINERY CO., LTD.
    Inventors: Masatoshi Kawano, Keisuke Tasaki, Takashi Mitsuyasu
  • Publication number: 20170129736
    Abstract: The present invention provides a wire electrode supply apparatus for suppressing wire electrode driving vibration for wire electrodes having a wide range of diameters and formed of various materials, thereby improving processed surface roughness. The wire electrode supply apparatus includes a back tension adjustment unit that adjusts a back tension of the wire electrode drawn from a source bobbin, a tension applying unit, and a constant pressure ejecting unit that ejects the wire electrode with constant pressure and rate after the transference via the tension applying unit and an electrical discharge machining unit. The tension applying unit includes a low tension applying unit that applies a tension to the wire electrode, and a high tension applying unit that can supply a higher tension. After the high tension applying unit supplies a tension, the low tension applying unit supplies a tension. Otherwise, only the low tension applying unit supplies a tension.
    Type: Application
    Filed: April 23, 2015
    Publication date: May 11, 2017
    Inventors: Yoshihiro ITO, Takashi MITSUYASU
  • Publication number: 20160231529
    Abstract: A manufacturing method of an imaging module and an imaging module manufacturing apparatus capable of performing positioning of an imaging element unit and a lens unit with high accuracy are provided. A manufacturing apparatus 200 holds a lens unit 10 and an imaging element unit 20 on a Z axis, and images a measurement chart by an imaging element 27 in a state where a probe 113a comes into contact with each of terminals 14A to 14F electrically connected to an x-direction VCM 16A, a y-direction VCM 16C, and a z-direction VCM 16E of the lens unit 10 and electricity flows to a lens drive unit 16 inside the lens unit 10. A contactor of the probe 113a is configured of a non-magnetic material.
    Type: Application
    Filed: April 21, 2016
    Publication date: August 11, 2016
    Applicant: FUJIFILM Corporation
    Inventor: Takashi MITSUYASU
  • Patent number: 9389485
    Abstract: A device includes a camera and an upper strobe which irradiates a user with light from an upper front. The upper strobe is provided such that a light-emitting surface is positioned at an upper rear of the camera as viewed from an object. The present technology can be applied to a photo sticker creating device.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: July 12, 2016
    Assignee: FURYU CORPORATION
    Inventors: Kyoko Tada, Hidehiro Sakai, Takashi Mitsuyasu, Yukari Hamaguchi, Shingo Hamaguchi, Shuhei Yamoto
  • Publication number: 20160118435
    Abstract: A manufacturing device holds a lens unit on a Z axis that is orthogonal to a chart surface of a measurement chart, holds an image pickup element unit on the Z axis, picks up an image of the measurement chart by an image pickup element while changing a Z-axis direction position of the image pickup element unit held on the Z axis in a state in which current is applied to a second lens drive unit and a third lens drive unit of the lens unit held on the Z axis, adjusts the position and a tilt of the image pickup element unit relative to the lens unit on the basis of image pickup signals that are obtained in the case where the image of the measurement chart is picked up, and fixes the image pickup element unit to the lens unit.
    Type: Application
    Filed: January 7, 2016
    Publication date: April 28, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya FUJINAMI, Takashi MITSUYASU