Patents by Inventor Yasushi Takeuchi

Yasushi Takeuchi 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: 10761458
    Abstract: An image forming apparatus includes an image bearing member; an intermediary image transfer belt; primary and secondary transfer members; a first cleaning member; a second cleaning member; an electrical discharge member; a voltage source for supplying a voltage to produce the discharge current; and a controller, which controls the voltage source such that an absolute value of a first current balance is not more than 50% of an absolute value of a second current balance. The first current balance is a sum of a primary transferring current, a secondary-transfer current, a first cleaning current, a second cleaning current and a discharge current at the time when an image region on the belt passes the primary transfer member, the secondary transfer member, the first cleaning member, the second cleaning member and the discharge member, respectively, and the second balance is the first balance minus the discharge current.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasushi Takeuchi
  • Publication number: 20200073291
    Abstract: An image forming apparatus includes an image bearing member; an intermediary image transfer belt; primary and secondary transfer members; a first cleaning member; a second cleaning member; an electrical discharge member; a voltage source for supplying a voltage to produce the discharge current; and a controller, which controls the voltage source such that an absolute value of a first current balance is not more than 50% of an absolute value of a second current balance. The first current balance is a sum of a primary transferring current, a secondary-transfer current, a first cleaning current, a second cleaning current and a discharge current at the time when an image region on the belt passes the primary transfer member, the secondary transfer member, the first cleaning member, the second cleaning member and the discharge member, respectively, and the second balance is the first balance minus the discharge current.
    Type: Application
    Filed: August 23, 2019
    Publication date: March 5, 2020
    Inventor: Yasushi Takeuchi
  • Patent number: 10549305
    Abstract: A support structure for a suspended injector includes a suspended injector having a tubular vertical portion extending in a vertical direction, one or more chamfered portions formed by chamfering an outer peripheral surface near an upper end of the tubular vertical portion, a pair of holding members each having a flat surface formed on an inner peripheral surface of each of the pair of holding members to engage with each of the chamfered portions, each of the pair of holding members holding the tubular vertical portion of the suspended injector by sandwiching the tubular vertical portion of the suspended injector from both sides each of the pair of holding members, and a support structure part configured to fixedly support the pair of holding members, and configured to suspend and support the suspended injector.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: February 4, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yuya Sasaki, Kiichi Takahashi, Yasushi Takeuchi
  • Patent number: 10496006
    Abstract: An image forming apparatus includes a photosensitive member; a charging device, a developing device, a transfer device, and a controller. The controller is capable of executing an operation in a first mode in which an image forming operation is controlled so that an exposure start enable timing is set during movement of the photosensitive member through one full circumference from first passing, through an exposure position, of a region of the photosensitive member which has passed through a charging position, and executing an operation in a second mode in which an image forming operation is controlled so that the exposure start enable timing is set after the movement of the photosensitive member. On the basis of image information of the first sheet of an image forming job, the controller selects an executing mode from a plurality of modes including at least the first mode and the second mode.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasushi Takeuchi
  • Patent number: 10428425
    Abstract: A film deposition apparatus for sequentially supplying reaction gases, which mutually react, into a chamber to deposit a film on a substrate includes a turntable rotatable and including a concave portion on an upper surface, a bottom portion of the concave portion having a through hole, a substrate supporting member attachable to and detachable from the concave portion, an upper surface of the substrate supporting member mounting the substrate, a lower surface of the substrate supporting member having a first protruding portion, a drive mechanism moving up and down the turntable and revolving the turntable, a lid member located lower than the turntable, an upper surface of the lid member having a second protruding portion, and a control unit revolving the turntable to cause the first protruding portion to contact the second protruding portion and cause the substrate supporting member to be spun a predetermined angle relative to the turntable.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: October 1, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Katsuhiko Oyama, Kiichi Takahashi, Yasushi Takeuchi, Katsuyoshi Aikawa
  • Patent number: 10416593
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 17, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi
  • Publication number: 20190163089
    Abstract: An image forming apparatus includes a photosensitive member; a charging device, a developing device, a transfer device, and a controller. The controller is capable of executing an operation in a first mode that an image forming operation is controlled so that an exposure start enable timing is set during movement of the photosensitive member through one full circumference from first passing, through an exposure position, of a region of the photosensitive member which has passed through a charging position, and executing an operation in a second mode that an image forming operation is controlled so that the exposure start enable timing is set after the movement of the photosensitive member. On the basis of image information of the first sheet of an image forming job, the controller selects an executing mode from a plurality of modes including at least the first mode and the second modes.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 30, 2019
    Inventor: Yasushi Takeuchi
  • Patent number: 10297481
    Abstract: A magnetic annealing apparatus is provided which performs a magnetic annealing on workpieces held in a workpiece boat by using a horizontal superconducting magnet as a magnetic field generating unit. The magnetic annealing apparatus includes a carrier configured to accommodate the workpieces before the magnetic annealing process; and a workpiece conveyance mechanism configured to convey the workpieces held in the carrier to the workpiece boat. The workpiece conveyance mechanism is capable of holding the workpieces in either a horizontal state or in a vertical state.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 21, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Ono, Toru Ishii, Makoto Saito, Mitsuru Obara, Yasushi Takeuchi
  • Patent number: 10096504
    Abstract: A method for managing an atmosphere in a storage container in a processing apparatus including a substrate transfer region and a container transfer region which are partitioned by a partition wall; a load port; a container keeping rack; and a cover opening/closing mechanism, includes substituting the internal atmosphere of the storage container that stores non-processed substrates with the inert gas for using the cover opening/closing mechanism; transferring the storage container of which the internal atmosphere has been substituted with the inert gas, to the container keeping rack and placing and keeping the storage container on the container keeping rack; and putting the storage container on standby on the container keeping rack while maintaining the atmosphere substituted with the inert gas.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: October 9, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Katsuhiko Oyama, Yasushi Takeuchi, Shinji Asari
  • Patent number: 10073433
    Abstract: A numerical controller controls a position of a control axis in synchronization with a reference value by using tabular data. When the numerical controller sequentially reads a command block from the tabular data and analyzes the command block so as to acquire a reference value and a coordinate value of a control point, the numerical controller outputs a reference value of the control point, which is shifted based on a shift amount specified by a shift command, in command blocks subsequent to the command block which includes the shift command, in a case where the shift command for shifting a reference value is included in the read command block.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 11, 2018
    Assignee: FANUC Corporation
    Inventors: Yoshifumi Wake, Akira Kanemaru, Yasushi Takeuchi
  • Publication number: 20180207689
    Abstract: An fouling cleaning process (blasted-particles cleaning process) of performing, at least once, ultrasonic cleaning treatment (Steps S22 and S25) of immersing a turbine rotor blade in a water basin and conducting an ultrasonic wave into the water basin to clean the turbine rotor blade, and pressurized-water cleaning treatment (Steps S23 and S26) of spraying pressurized water into an internal cooling flow channel after the ultrasonic cleaning treatment is performed, after a bonding coat layer removing process of removing a bonding coat layer (first coating layer) by chemical treatment and a cleaning process of cleaning the turbine blade by blast treatment, and then heat tinging process is performed.
    Type: Application
    Filed: December 13, 2016
    Publication date: July 26, 2018
    Inventors: Yasushi TAKEUCHI, Yosuke KAWACHI, Yoshiyuki INOUE
  • Patent number: 10018987
    Abstract: A numerical controller drives motors for respective axes of a machine tool by using an NC program and table-format data that command positions of those axes with reference to a position of a reference axis. The numerical controller generates, based on a movement command commanded by the NC program, interpolation data for an axis to be controlled by the movement command, generates, based on the table-format data, interpolation data for an axis to be controlled by the table-format data, and further generates interpolation data obtained by selection from or superposition of these two pieces of interpolation data.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: July 10, 2018
    Assignee: FANUC Corporation
    Inventors: Akira Kanemaru, Yasushi Takeuchi
  • Patent number: 9964943
    Abstract: When a command for outputting a movement amount at a specific reference value is included in a command block, a numerical controller which controls a position of a control axis in synchronization with a reference value by using tabular data registers the reference value and the movement amount of the command in a shift table while associating the reference value with the movement amount. Then, when the current reference value reaches the reference value registered in the shift table, the numerical controller superposes the movement amount of the control axis that is associated with the reference value in the shift table on a distributed movement amount to the control axis, and outputs the superposed movement amount as a movement amount of the control axis.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: May 8, 2018
    Assignee: FANUC Corporation
    Inventors: Akira Kanemaru, Yasushi Takeuchi
  • Patent number: 9964940
    Abstract: A numerical controller performs cross-rail axis control that distributes moving amount to a first and second axes based on a command to a virtual axis. If a block of a program that is read out contains a fast feed command to the virtual axis for moving a tool to a cutting feed start point, the numerical controller distributes a moving amount commanded by the fast feed command to the first axis and the second axis. Further, the moving amount commanded by the fast feed command is distributed to the first axis and the second axis so that movement of the virtual axis commanded by a cutting feed command that follows the fast feed command in the program can be achieved by movement of only the first axis.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: May 8, 2018
    Assignee: FANUC CORPORATION
    Inventors: Yasushi Takeuchi, Makoto Suzuki, Motohiko Ito
  • Publication number: 20180056317
    Abstract: A support structure for a suspended injector includes a suspended injector having a tubular vertical portion extending in a vertical direction, one or more chamfered portions formed by chamfering an outer peripheral surface near an upper end of the tubular vertical portion, a pair of holding members each having a flat surface formed on an inner peripheral surface of each of the pair of holding members to engage with each of the chamfered portions, each of the pair of holding members holding the tubular vertical portion of the suspended injector by sandwiching the tubular vertical portion of the suspended injector from both sides each of the pair of holding members, and a support structure part configured to fixedly support the pair of holding members, and configured to suspend and support the suspended injector.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Inventors: Yuya SASAKI, Kiichi TAKAHASHI, Yasushi TAKEUCHI
  • Patent number: 9904277
    Abstract: A numerical controller configured for operation based on tabular data identifies a control command, calculates an operating time to achieve a target state for the control command, determines a time, an axis position, or a spindle position, which serves as a reference for the start of the operation, and starts the operation.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: February 27, 2018
    Assignee: FANUC Corporation
    Inventors: Akira Kanemaru, Yasushi Takeuchi
  • Patent number: 9897940
    Abstract: In the present invention, an image forming apparatus using a method of replacing a developer is configured such that an immobile area in which the heights of a discharge passage and a conveyance passage are changed on the upstream side of a returning screw is filled. This causes the immobile area of the developer to be unlikely to occur and accordingly suppresses formation of a toner stain image due to an aggregation toner, enabling stable image formation over a long period of time.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Iida, Yusuke Ishida, Yasushi Takeuchi, Toshiyuki Yamada
  • Patent number: 9851670
    Abstract: When ending image forming, a state is realized where charging by a charging roller is stopped (charging bias off) and also applying DC voltage at a developing device is stopped (developing bias DC off). In this state, AC voltage is applied to the developing device (developing bias AC on), thereby adhering toner to the surface of a photosensitive drum and forming interposing toner. Driving of the photosensitive drum and an intermediate transfer belt is then stopped in the state with the interposing toner interposed between the photosensitive drum and intermediate transfer belt.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: December 26, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasushi Takeuchi, Takayuki Ganko, Koji Arimura, Yusuke Ishida, Takanori Iida, Toshiyuki Yamada, Daisuke Makino, Taisuke Matsuura
  • Patent number: 9841746
    Abstract: A numerical controller has a first axis (reference axis) and a second axis (superimposed axis), and performs superimposed control which superimposes a movement amount of the reference axis on a movement amount of the superimposed axis, and thereby controls the movement of the superimposed axis. The numerical controller controls an acceleration start time of the axis to be accelerated, in a superimposition interval in which the reference axis is accelerated and the superimposed axis is decelerated (or reference axis is decelerated and superimposed axis is accelerated). After the axis to be decelerated is sufficiently decelerated, the axis to be accelerated is accelerated, and a moving speed of the superimposed axis does not exceed a speed limit of a machine in an acceleration/deceleration interval.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: December 12, 2017
    Assignee: FANUC CORPORATION
    Inventors: Kouhei Irie, Akira Kanemaru, Yasushi Takeuchi
  • Publication number: 20170299984
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 19, 2017
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi