Patents by Inventor Takeshi Shoji

Takeshi Shoji 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).

  • Publication number: 20220236390
    Abstract: One or more types of laser scanner apparatuses perform object detection by emitting laser pulses and detecting corresponding reflected pulses by correlating a digitized detection signal against a correlation template representing a characteristic signal pulse. Regions of the digitized detection signal exhibiting high correlation with the template correspond to reflection pulses caused by backscattering of the emitted laser pulses. A calibration system and corresponding calibration method improve detection operations by such laser scanner apparatuses by producing a high-resolution correlation template. Among the several advantages associated with the system and method is the ability to produce correlation templates of high resolution, without requiring any increase in the base sampling rate of the digitizers used by the calibration system and the laser scanner apparatuses for digitizing their respective detection signals.
    Type: Application
    Filed: January 24, 2022
    Publication date: July 28, 2022
    Inventors: Takeshi Shoji, Fred Schleifer
  • Publication number: 20220236412
    Abstract: A laser scanner apparatus emits a laser pulse and monitors for pulse reflections, with the relative timing of a reflected pulse detected by the apparatus being translated into an object distance according to Time-of-Flight (ToF) measurements performed by the apparatus. According to an example configurations or an example method of operation, the apparatus adjusts its ToF determination for reflected pulses that are characterized as merged pulses formed by two or more overlapping reflected pulses. Among other advantages, the adjusted ToF determination yields a more accurate distance determination with respect to the earliest-arriving one(s) among the overlapping reflected pulses.
    Type: Application
    Filed: January 24, 2022
    Publication date: July 28, 2022
    Inventors: Takeshi Shoji, Yoshiharu Tani, Adam Sowul, Fred Schleifer
  • Publication number: 20220176560
    Abstract: A control system (1) includes: a control device (100) that controls a robot (200); a three-dimensional sensor (300) that acquires positional information of a worker and the robot (200), which are included in a viewing-field area in a three-dimensional space; and a support device (400) that provides a user interface (411) for virtually setting a cooperation region in which the worker and the robot (200) are allowed to work. The control device (100) controls stopping or the speed of the robot (200) on the basis of whether or not the position of the worker or the robot (200) calculated on the basis of the positional information is included in the cooperation region, which is set by using the user interface (411), as well as the relative positional relationship between the worker and the robot (200) calculated on the basis of the positional information.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 9, 2022
    Applicant: OMRON Corporation
    Inventors: Tetsuya AKAGI, Takeshi SHOJI, Kazunori OSAKO, Xiaoguang NING, Kazuma MISHIMA
  • Publication number: 20190227523
    Abstract: Provided is an intrusion detection method that achieves both safety of the worker and high work productivity of the robot. A safety monitoring system includes: a light projector in which a plurality of first light emitting elements that emit light of a first wavelength and a plurality of second light emitting elements that emit light of a second wavelength different from the first wavelength are arranged; an imaging part capturing an image of the light projector; an imaging processing part performing intrusion detection of an object based on the image captured by the imaging part; and a robot control part generating a signal for controlling movement of a robot from a result of performing the intrusion detection. The light projector is arranged on a boundary line of danger prediction for the movement of the robot. The first wavelength is visible light.
    Type: Application
    Filed: October 15, 2018
    Publication date: July 25, 2019
    Applicant: OMRON Corporation
    Inventors: Takeshi SHOJI, Yoshiharu TANI
  • Patent number: 10085001
    Abstract: According to one aspect of the teachings herein, a method and apparatus detect mechanical misalignments in a machine vision system during run-time operation of the machine vision system, and compensate image processing based on the detected misalignments, unless the detected misalignments are excessive. Excessive misalignments may be detected by determining a worst-case error based on them. If the worst-case error exceeds a defined limit, the machine vision system transitions to a fault state. The fault state may include disrupting operation of a hazardous machine or performing one or more other fault-state operations. Among the detected misalignments are internal misalignments within individual cameras used for imaging, and relative misalignments between cameras. The method and apparatus may further perform run-time verifications of focus and transition the machine vision system to a fault state responsive to detecting insufficient focal quality.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: September 25, 2018
    Assignee: Omron Corporation
    Inventors: Takeshi Shoji, John Drinkard, Ambrish Tyagi
  • Patent number: 9625847
    Abstract: An electrostatic charge image developing carrier contains a core particle and a resin coat layer on a surface of the core particle, wherein the core particle has a BET specific surface area of from 0.05 m2/g to 0.10 m2/g, and the resin coat layer contains a nitrogen-containing (meth)acrylate resin.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: April 18, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Shoji, Hiroshi Kamada, Yosuke Tsurumi
  • Patent number: 9513570
    Abstract: An electrostatic charge image developer contains toner including toner particles, and strontium titanate particles having a volume average particle diameter of 3 ?m to 7 ?m. The electrostatic charge image developer also contains a carrier including core particle, and a coating layer that coats the core particle and contains a cyclohexyl methacrylate resin.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: December 6, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Shoji, Yosuke Tsurumi, Hiroshi Kamada
  • Publication number: 20160062256
    Abstract: An electrostatic charge image developing carrier contains a core particle and a resin coat layer on a surface of the core particle, wherein the core particle has a BET specific surface area of from 0.05 m2/g to 0.10 m2/g, and the resin coat layer contains a nitrogen-containing (meth)acrylate resin.
    Type: Application
    Filed: January 23, 2015
    Publication date: March 3, 2016
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi SHOJI, Hiroshi KAMADA, Yosuke TSURUMI
  • Publication number: 20160026105
    Abstract: There is provided a carrier for developing an electrostatic image, comprising: magnetic particles, wherein the magnetic particles has a flow rate of 25 sec/50 g to 30 sec/50 g, and the magnetic particles satisfy an expression of 1.00?LR/HR?1.15, wherein HR represents a resistance under an electric field of 19200 V/cm at a temperature of 30° C. and a relative humidity of 85%, and LR represents a resistance under an electric field of 19200 V/cm at a temperature of 10° C. and a relative humidity of 15%.
    Type: Application
    Filed: January 29, 2015
    Publication date: January 28, 2016
    Inventors: Yosuke TSURUMI, Takeshi SHOJI, Hiroshi KAMADA
  • Publication number: 20150316867
    Abstract: An electrostatic charge image developer contains toner including toner particles, and strontium titanate particles having a volume average particle diameter of 3 ?m to 7 ?m. The electrostatic charge image developer also contains a carrier including core particle, and a coating layer that coats the core particle and contains a cyclohexyl methacrylate resin.
    Type: Application
    Filed: October 29, 2014
    Publication date: November 5, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi SHOJI, Yosuke TSURUMI, Hiroshi KAMADA
  • Publication number: 20150277273
    Abstract: An electrostatic charge image developing carrier includes core particles, a coating layer that covers the core particles, and inorganic particles that are adhered to the surface of the coating layer, wherein the inorganic particles have a volume average particle diameter in a range of 150 nm to 500 nm, and an adhesion amount in a range of 0.02% by weight to 0.1% by weight with respect to the entire carrier.
    Type: Application
    Filed: January 6, 2015
    Publication date: October 1, 2015
    Inventors: Takeshi SHOJI, Yosuke TSURUMI
  • Publication number: 20150271474
    Abstract: According to one aspect of the teachings herein, a method and apparatus detect mechanical misalignments in a machine vision system during run-time operation of the machine vision system, and compensate image processing based on the detected misalignments, unless the detected misalignments are excessive. Excessive misalignments may be detected by determining a worst-case error based on them. If the worst-case error exceeds a defined limit, the machine vision system transitions to a fault state. The fault state may include disrupting operation of a hazardous machine or performing one or more other fault-state operations. Among the detected misalignments are internal misalignments within individual cameras used for imaging, and relative misalignments between cameras. The method and apparatus may further perform run-time verifications of focus and transition the machine vision system to a fault state responsive to detecting insufficient focal quality.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 24, 2015
    Inventors: Takeshi Shoji, John Drinkard, Ambrish Tyagi
  • Patent number: 8715899
    Abstract: A carrier for a two-component developer includes magnetic particles, and a resin coating layer that covers the magnetic particles. The resin coating layer contains metal boride particles having a volume average primary particle diameter of from about 300 nm to about 2,500 nm.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: May 6, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Norihito Fukushima, Takeshi Shoji, Toshiaki Hasegawa
  • Publication number: 20140051022
    Abstract: An electrostatic charge image developing carrier includes a core particle that has a BET specific surface area of from 0.15 m2/g to 0.30 m2/g; and a coating layer that contains a polycyclohexyl methacrylate resin and has a void ratio of from 2% to 10% and with which the core particle is coated, in which a content of a volatile organic compound is less than or equal to 500 ppm.
    Type: Application
    Filed: May 1, 2013
    Publication date: February 20, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi SHOJI, Norihito FUKUSHIMA, Toshiaki HASEGAWA
  • Patent number: 8603716
    Abstract: An electrostatic image developing carrier includes a ferrite particle and a resin layer that coats the ferrite particle, wherein a magnesium element content of the ferrite particle is from about 3.0% by weight to about 20.0% by weight; wherein a manganese element content of the ferrite particle is from about 0.2% by weight to about 0.8% by weight; and wherein a content of toluene is more than about 100 ppm and not more than about 2,000 ppm.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: December 10, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Shoji, Akihiro Iizuka, Yosuke Tsurumi, Fusako Kiyono
  • Patent number: 8580475
    Abstract: An electrostatic charge image developing carrier includes a core particle and a coating layer with which the surface of the core particle is coated. The coating layer includes an acrylic resin having a constituent unit in which a silicone chain is disposed in a branch.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: November 12, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Shoji, Toshiaki Hasegawa
  • Patent number: 8455168
    Abstract: An electrophotographic developer is provided which includes: a toner that includes toner base particles and an external additive attached to a surface of the toner base particles and has an amount of Al on the surface of the toner base particles of from about 0.002 to about 0.02 atm %; and a carrier that includes magnetic particles and a coating resin layer that coats the magnetic particles, the coating resin layer including particles with a volume-average particle diameter of from about 80 to about 800 nm, such as organic particles or inorganic particles having an organic layer on a surface of the inorganic particles, the carrier satisfying any one of the following formulas, where SP1, SP2 and SP3 represent a solubility parameter of resin of the coating resin layer, the organic particles, and the organic layer respectively: about 10>|SP1?SP2|>about 4??(1); and about 10>|SP1?SP3|>about 4??(2).
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: June 4, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fusako Kiyono, Sakon Takahashi, Toshiaki Hasegawa, Takeshi Shoji
  • Patent number: 8389192
    Abstract: An electrophotographic carrier includes a magnetic core material and a resin layer that coats the magnetic core material, the resin layer comprising a resistance control agent and a polymer including a repeating unit derived from an alicyclic group-containing methacrylic ester, the resin layer including a monomer as a base material of the repeating unit in the polymer in an amount of from about 0.5% by weight to about 3.0% by weight relative to the total amount of the resin layer.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: March 5, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fusako Kiyono, Takeshi Shoji, Yosuke Tsurumi, Akihiro Iizuka
  • Publication number: 20130040236
    Abstract: A carrier for a two-component developer includes magnetic particles, and a resin coating layer that covers the magnetic particles. The resin coating layer contains metal boride particles having a volume average primary particle diameter of from about 300 nm to about 2,500 nm.
    Type: Application
    Filed: February 22, 2012
    Publication date: February 14, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Norihito FUKUSHIMA, Takeshi SHOJI, Toshiaki HASEGAWA
  • Patent number: 8337164
    Abstract: An object is to provide a turbomolecular pump with rotor and stator blades alternatively arranged that can prevent collision between the adjacent rotor and stator blades due to air inrush, which may take place due to vacuum break in a system operation, prevent excessive centrifugal force to a hub portion of a rotor, and further enhance pumping performance. A blade cross sectional profile taken along the circumferential direction of each of the rotor blades of a rotor blade stage has an upstream portion curved convexly backward in a rotational direction of the rotor and a downstream portion curved convexly forward in the rotational direction of the rotor, thereby forming the blade cross sectional profile into an S-shape or inversed S-shape.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: December 25, 2012
    Assignee: Osaka Vacuum, Ltd.
    Inventors: Tetsuro Ohbayashi, Takeshi Shoji