Patents by Inventor Ryo Nagata

Ryo Nagata 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: 10303075
    Abstract: A toner including a toner particle and an external additive, wherein the external additive contains an inorganic fine particle A and a silica fine particle; in a surface of the toner observed using a scanning electron microscope, a number-average particle diameter of primary particle of the silica fine particle is from 5 nm to 50 nm, a number-average particle diameter of primary particle of the inorganic fine particle A is at least 10 nm and less than 60 nm, a coverage ratio X1 of the toner surface covered by the silica fine particle is from 60 area % to 95 area %, the inorganic fine particle A is a fine particle of a titanate having a Group 2 element, and a coverage ratio X2 of the toner surface covered by the inorganic fine particle A is from 5 area % to 40 area %.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 28, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Keisuke Tanaka, Yojiro Hotta, Kazuo Terauchi, Koji Nishikawa, Takaaki Furui, Ryo Nagata, Kazuyuki Sato, Yu Yoshida, Yusuke Kosaki, Masami Fujimoto
  • Patent number: 10295920
    Abstract: Provided is toner that contains a toner particle, and an external additive containing a strontium titanate particle, wherein the toner has an average circularity of at least 0.935 and not more than 0.995, the strontium titanate particle has a number-average primary particle diameter of at least 10 nm and not more than 60 nm, the strontium titanate particle has a peak in the range of 39.700°±0.150° and a peak in the range of 46.200°±0.150° in a CuK? x-ray diffraction spectrum obtained in the 2? range of at least 10° and not more than 90° where ? is the Bragg angle, and the ratio of the area Sb of the peak at 46.200°±0.150° to the area Sa of the peak at 39.700°±0.150° is at least 1.80 and not more than 2.30.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: May 21, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Nishikawa, Yojiro Hotta, Kazuo Terauchi, Takaaki Furui, Ryo Nagata, Keisuke Tanaka, Kazuyuki Sato, Yu Yoshida, Yusuke Kosaki, Masami Fujimoto
  • Publication number: 20190064686
    Abstract: A toner contains toner particles, titanate fine particles having a Group II element, and hydrotalcite compound fine particles as an external additive and satisfying 10?Lt?80 and 100?Lh?Weight average particle diameter (D4) of toner particles×0.50, when the number average particle diameter (D1) of primary particles of the titanate fine particles is defined as Lt (nm) and the number average particle diameter (D1) of primary particles of the hydrotalcite compound fine particles is defined as Lh (nm).
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Inventors: Kazuo Terauchi, Yojiro Hotta, Koji Nishikawa, Masami Fujimoto, Takaaki Furui, Ryo Nagata, Keisuke Tanaka
  • Patent number: 10216891
    Abstract: There is provided a method for supporting work of improving the design of a mechanical apparatus which is operated by a motor, including: an operating step of operating a movable section of the mechanical apparatus by the motor; a measuring step of obtaining at least one index which indicates an input into the motor or an output from the motor in the operating step; a determining step of determining the mechanical properties of the mechanical apparatus, by using at least one index obtained in the measuring step; and a specifying step of specifying at least one improvement-required item which is required to be improved in the design of the mechanical apparatus, by using the mechanical properties determined in the determining step.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: February 26, 2019
    Assignee: FUJI CORPORATION
    Inventors: Makoto Kainuma, Masatoshi Fujita, Ryo Nagata, Takashi Kido
  • Publication number: 20190041762
    Abstract: A toner comprising: a toner particle that contains a binder resin and a colorant: and an external additive, wherein (1) the average circularity of the toner is at least 0.960; (2) the fixing ratio of the external additive on the toner particle is from 75% to 100%; and (3) in a differential curve obtained by the differentiation, by load, of a load-displacement curve where the horizontal axis is load (mN) and the vertical axis is displacement (?m), the load-displacement curve being provided by measurement of the strength of the toner by a nanoindentation procedure, a load A that provides a maximum value in the differential curve in a load region from 0.20 mN to 2.30 mN is from 1.15 mN to 1.50 mN.
    Type: Application
    Filed: July 27, 2018
    Publication date: February 7, 2019
    Inventors: Daisuke Yoshiba, Shohei Tsuda, Mariko Yamashita, Kozue Uratani, Ryo Nagata
  • Patent number: 10099365
    Abstract: In a work machine including an articulated robot which is provided with a work head and moves the work head, imaging devices which image at least part of a workpiece or part of the work machine are attached to a distal end of the robot, and a target operation position of the robot is corrected on the basis of position data regarding a plurality of feature points of the workpiece, created on the basis of imaging data obtained through imaging performed by the imaging devices and design data of the workpiece, or position data regarding a plurality of feature points set for the work machine.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: October 16, 2018
    Assignee: FUJI CORPORATION
    Inventors: Masatoshi Fujita, Seigo Kodama, Ryo Nagata
  • Patent number: 10097127
    Abstract: A method of deriving a thrust constant representing an occurrence rate of a thrust in relation to a current in a linear motor which includes a magnet extending in a movement direction, and a moving body which includes a coil mounted to a track member in a movable manner, the linear motor generating a thrust in the movement direction between the magnet and the coil by causing the current to flow in the coil, in which an average thrust constant which is an average thrust constant in a long movement zone on the track member is derived based on actual measurement, local thrust constants which are local thrust constants of a plurality of locations on the track member are derived based on each actual measurement, and the thrust constants are derived based on the average thrust constant and the local thrust constant of each location.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 9, 2018
    Assignee: FUJI CORPORATION
    Inventors: Hiroki Kawashima, Ryo Nagata
  • Publication number: 20180246432
    Abstract: Provided is toner that contains a toner particle, and an external additive containing a strontium titanate particle, wherein the toner has an average circularity of at least 0.935 and not more than 0.995, the strontium titanate particle has a number-average primary particle diameter of at least 10 nm and not more than 60 nm, the strontium titanate particle has a peak in the range of 39.700°±0.150° and a peak in the range of 46.200°±0.150° in a CuK? x-ray diffraction spectrum obtained in the 2? range of at least 10° and not more than 90° where ? is the Bragg angle, and the ratio of the area Sb of the peak at 46.200°±0.150° to the area Sa of the peak at 39.700°±0.150° is at least 1.80 and not more than 2.30.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 30, 2018
    Inventors: Koji Nishikawa, Yojiro Hotta, Kazuo Terauchi, Takaaki Furui, Ryo Nagata, Keisuke Tanaka, Kazuyuki Sato, Yu Yoshida, Yusuke Kosaki, Masami Fujimoto
  • Publication number: 20180246430
    Abstract: A toner including a toner particle and an external additive, wherein the external additive contains an inorganic fine particle A and a silica fine particle; in a surface of the toner observed using a scanning electron microscope, a number-average particle diameter of primary particle of the silica fine particle is from 5 nm to 50 nm, a number-average particle diameter of primary particle of the inorganic fine particle A is at least 10 nm and less than 60 nm, a coverage ratio X1 of the toner surface covered by the silica fine particle is from 60 area % to 95 area %, the inorganic fine particle A is a fine particle of a titanate having a Group 2 element, and a coverage ratio X2 of the toner surface covered by the inorganic fine particle A is from 5 area % to 40 area %.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 30, 2018
    Inventors: Keisuke Tanaka, Yojiro Hotta, Kazuo Terauchi, Koji Nishikawa, Takaaki Furui, Ryo Nagata, Kazuyuki Sato, Yu Yoshida, Yusuke Kosaki, Masami Fujimoto
  • Patent number: 9825508
    Abstract: A linear motor device includes a track member with multiple magnets with alternating N poles and S poles arranged along the moving direction, and a moving body with a configuration which includes an armature which is movably mounted on the track member; and the device generates a driving force in the moving direction between the magnetic flux created armature and the magnets of track member. The armature also includes a heat conduction member arranged in cooling passages formed in cores of the armature. By this, coils on the moving body side are cooled efficiently, and a large driving force can be achieved by passing a large current as well as maintaining a large space for winding the coils in order to increase the winding count.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 21, 2017
    Assignee: FUJI MACHINE MFG. CO., LTD.
    Inventors: Makoto Kainuma, Ryo Nagata, Masatoshi Fujita, Shuhei Yamada
  • Publication number: 20170305012
    Abstract: After a component picked up by a suction nozzle is moved in an XY direction towards target XY coordinates, a waveform of a vibration (vibration waveform) in the Y direction arising in the component after the component has arrived near the target XY coordinates is measured, and control is performed such that the component arrives at a target Z coordinate (value zero) when a displacement y of the component crosses a node of the measured vibration waveform.
    Type: Application
    Filed: October 10, 2014
    Publication date: October 26, 2017
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Ryo NAGATA, Masatoshi FUJITA
  • Publication number: 20170112031
    Abstract: A component mounting machine moves a mounting head from a supply position P1 to each of mounting positions P3 and P4 of a circuit board CB via an imaging position P2. Further, the component mounting machine performs control such that the mounting head moves in a direction of movement at the time of imaging that is either of an X-axis direction or a Y-axis direction when passing through the imaging position P2. The component mounting machine determines the direction of movement at the time of imaging, according to a first X-axis distance Lx and a first Y-axis distance Ly from the imaging position P2 to each of the mounting positions P3 and P4.
    Type: Application
    Filed: March 27, 2014
    Publication date: April 20, 2017
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Jun IISAKA, Hidetoshi ITO, Hidetoshi KAWAI, Shigeto OYAMA, Naohiro KATO, Kuniyasu NAKANE, Ryo NAGATA, Keisuke NAGIRI
  • Publication number: 20160315574
    Abstract: A method of deriving a thrust constant representing an occurrence rate of a thrust in relation to a current in a linear motor which includes a magnet extending in a movement direction, and a moving body which includes a coil mounted to a track member in a movable manner, the linear motor generating a thrust in the movement direction between the magnet and the coil by causing the current to flow in the coil, in which an average thrust constant which is an average thrust constant in a long movement zone on the track member is derived based on actual measurement, local thrust constants which are local thrust constants of a plurality of locations on the track member are derived based on each actual measurement, and the thrust constants are derived based on the average thrust constant and the local thrust constant of each location.
    Type: Application
    Filed: December 20, 2013
    Publication date: October 27, 2016
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Hiroki KAWASHIMA, Ryo NAGATA
  • Publication number: 20160301287
    Abstract: A linear motor device comprising: a path member including a magnet extending in a movement direction; and a moving body including a coil that is movably mounted on the path member; the linear motor device generates thrust in the movement direction between the magnet and the coil by current being passed through the coil; the moving body further includes a magnetic shielding target object, and a magnetic shielding member formed from strongly magnetic material that shields the magnetic shielding target. The magnetic shielding member includes a parallel shielding plate provided parallel to the movement direction between the magnetic shielding target object and the magnet, and a perpendicular shielding plate provided extending away from the magnet in a direction perpendicular to the movement direction at at least one of a front edge and a rear edge of the parallel shielding plate in the movement direction.
    Type: Application
    Filed: December 20, 2013
    Publication date: October 13, 2016
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Ryo NAGATA, Takashi KIDO, Yoshihiro SHIRAKAWA, Masaki KURONO
  • Publication number: 20160292349
    Abstract: There is provided a method for supporting work of improving the design of a mechanical apparatus which is operated by a motor, including: an operating step of operating a movable section of the mechanical apparatus by the motor; a measuring step of obtaining at least one index which indicates an input into the motor or an output from the motor in the operating step; a determining step of determining the mechanical properties of the mechanical apparatus, by using at least one index obtained in the measuring step; and a specifying step of specifying at least one improvement-required item which is required to be improved in the design of the mechanical apparatus, by using the mechanical properties determined in the determining step.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 6, 2016
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Makoto KAINUMA, Masatoshi FUJITA, Ryo NAGATA, Takashi KIDO
  • Patent number: 9397538
    Abstract: A linear motor with enhanced cooling performance, including: a stator including multiple magnetic force generating members provided in a row; a moving element including multiple coils provided in a row in an axis line direction of the stator and wound around an outside of the stator; and a heat transfer member dissipating heat generated by the coil which is between adjacent coils and along a side of the coils.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 19, 2016
    Assignee: FUJI MACHINE MFG. CO., LTD.
    Inventors: Jun-ichi Narita, Ryo Nagata, Masaki Kurono
  • Publication number: 20160202671
    Abstract: An automated system including a control target device and a control device which controls the control target device, in which it is possible to accurately estimate whether maintenance of the control target device is required and a portion requiring maintenance. The control device is an adaptive control device including a position control system, an adaptive identifier which estimates a parameter indicating a state of a control target device based on a control command and a control target output from the control target device, and an adaptive compensator which, based on the parameter which is estimated by the adaptive identifier, compensates the control command from the position control system to the control target device such that the control target device performs a planned operation regardless of a change in the parameter.
    Type: Application
    Filed: July 5, 2013
    Publication date: July 14, 2016
    Applicant: Fuji Machine Mfg. Co., Ltd.
    Inventors: Makoto KAINUMA, Masatoshi FUJITA, Ryo NAGATA, Takashi KIDO
  • Publication number: 20150158176
    Abstract: In a work machine including an articulated robot which is provided with a work head and moves the work head, imaging devices which image at least part of a workpiece or part of the work machine are attached to a distal end of the robot, and a target operation position of the robot is corrected on the basis of position data regarding a plurality of feature points of the workpiece, created on the basis of imaging data obtained through imaging performed by the imaging devices and design data of the workpiece, or position data regarding a plurality of feature points set for the work machine.
    Type: Application
    Filed: August 2, 2012
    Publication date: June 11, 2015
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Masatoshi Fujita, Seigo Kodama, Ryo Nagata
  • Publication number: 20150061416
    Abstract: A linear motor device includes a track member with multiple magnets with alternating N poles and S poles arranged along the moving direction, and a moving body with a configuration which includes an armature which is movably mounted on the track member; and the device generates a driving force in the moving direction between the magnetic flux created armature and the magnets of track member. The armature also includes a heat conduction member arranged in cooling passages formed in cores of the armature. By this, coils on the moving body side are cooled efficiently, and a large driving force can be achieved by passing a large current as well as maintaining a large space for winding the coils in order to increase the winding count.
    Type: Application
    Filed: March 26, 2012
    Publication date: March 5, 2015
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Makoto Kainuma, Ryo Nagata, Masatoshi Fujita, Shuhei Yamada
  • Publication number: 20140375148
    Abstract: A linear motor with enhanced cooling performance, including: a stator including multiple magnetic force generating members provided in a row; a moving element including multiple coils provided in a row in an axis line direction of the stator and wound around an outside of the stator; and a heat transfer member dissipating heat generated by the coil which is between adjacent coils and along a side of the coils.
    Type: Application
    Filed: January 10, 2012
    Publication date: December 25, 2014
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Jun-ichi Narita, Ryo Nagata, Masaki Kurono