Patents by Inventor Ryohei KURI

Ryohei KURI 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: 20190271593
    Abstract: An inspection apparatus includes a spectroscopic imager that spectroscopically separates light from a predetermined imaging range of an inspection object into light of a plurality of wavelengths and images spectroscopic images of each of the wavelengths, a shape inspection unit that inspects a shape of the inspection object using a spectroscopic image of a predetermined wavelength among the spectroscopic images of each of the wavelengths, and a color inspection unit that inspects a color of the inspection object using the spectroscopic images of each of the wavelengths.
    Type: Application
    Filed: March 1, 2019
    Publication date: September 5, 2019
    Inventors: Satoshi OGUCHI, Ryohei KURI, Masashi KANAI
  • Publication number: 20190232672
    Abstract: An ink cartridge includes a tank main body that contains ink, a transparent member that forms at least part of the tank main body and transmits light, and a reference plate that is disposed in the tank main body and in a position facing the transparent member and forms, along with the transparent member, an inflow space which is located between the transparent member and the reference plate and into which the ink flows.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 1, 2019
    Inventor: Ryohei KURI
  • Publication number: 20190195687
    Abstract: A spectroscopic measurement device includes a light receiving element that receives light and outputs a light receiving signal, a variable amplification circuit that amplifies the light receiving signal which is input, and a dark voltage correction unit that calculates a correction coefficient that is a rate of change of a dark voltage value with respect to gains, based on an output value of the variable amplification circuit with each value of two or more gains which are equal to or greater than a predetermined value in an environment where no light is incident on the light receiving element.
    Type: Application
    Filed: December 26, 2018
    Publication date: June 27, 2019
    Inventor: Ryohei KURI
  • Patent number: 10175108
    Abstract: A spectroscopic measurement apparatus includes a wavelength variable interference filter and a driving circuit. The wavelength variable interference filter includes a fixed reflection film, a movable reflection film that faces the fixed reflection film, and an electrostatic actuator that changes a distance between the fixed reflection film and the movable reflection film. The driving circuit drives the electrostatic actuator in such a way that the distance between the fixed reflection film and the movable reflection film changes at a uniform velocity.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: January 8, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Publication number: 20180284422
    Abstract: An optical module includes a variable wavelength interference filter provided with a pair of reflecting films, and an electrostatic actuator configured to change a gap dimension between the pair of reflecting films, a driver configured to apply a periodic drive voltage to the electrostatic actuator, a gap detector configured to detect a gap dimension between the pair of reflecting films, and a light receiver configured to receive light from the variable wavelength interference filter. The light reception signal from the light receiver is detected at a predetermined timing from a detection timing of one of a maximum value and a minimum value of the gap dimension detected by the gap detector.
    Type: Application
    Filed: March 13, 2018
    Publication date: October 4, 2018
    Inventor: Ryohei KURI
  • Patent number: 9998633
    Abstract: A color irregularity detecting device includes a spectrometer which includes a dispersing element which disperses light from a measurement target and a light receiving element which receives light from the dispersing element, and a color irregularity detecting section which detects color irregularity, in which the color irregularity detecting device detects color irregularity by comparing measured values (reflectance) which are results of using the spectrometer to measure three measurement wavelengths of light among light from a measurement target region in which a predetermined color is printed on a medium to reference values corresponding to the predetermined color.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: June 12, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Patent number: 9933552
    Abstract: An optical element includes a conductive fixed reflection film, a movable reflection film that faces the fixed reflection film, a transmissive second insulating film which is provided on a side of the fixed reflection film opposite to the movable reflection film, and a light receiving unit which is provided on a side of the second insulating film opposite to the fixed reflection film and within a light receiving region where the fixed reflection film, the movable reflection film, and the second insulating film overlap each other in an element plan view when seen from film thickness directions of the fixed reflection film and the movable reflection film, and which receives light emitted from the fixed reflection film.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: April 3, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Patent number: 9823129
    Abstract: A printer includes a spectroscope and a carriage moving unit. The spectroscope includes a wavelength-selective interference filter on which light from a measurement target is incident, and the carriage moving unit moves the spectroscope in an X direction with respect to the measurement target. If the measurement target is a color patch, the spectroscope performs spectrometry by changing a wavelength of light passing through the wavelength-selective interference filter in a first period during which the spectroscope is moved in the X direction, and passes light of an initial wavelength through the wavelength-selective interference filter at a start of measurement and at an end of measurement in the first period. A first output value that is a measured value from the spectrometry at the start of measurement is compared with a second output value that is a measured value from the spectrometry at the end of measurement.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: November 21, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Publication number: 20170219432
    Abstract: A spectroscopic measurement apparatus includes a wavelength variable interference filter and a driving circuit. The wavelength variable interference filter includes a fixed reflection film, a movable reflection film that faces the fixed reflection film, and an electrostatic actuator that changes a distance between the fixed reflection film and the movable reflection film. The driving circuit drives the electrostatic actuator in such a way that the distance between the fixed reflection film and the movable reflection film changes at a uniform velocity.
    Type: Application
    Filed: January 24, 2017
    Publication date: August 3, 2017
    Inventor: Ryohei KURI
  • Patent number: 9578183
    Abstract: A printer moves a color chart relative to a spectrometer that carries out spectral measurement on the color chart. The color chart, which is a color measurement target of the printer, includes a color patch and a white portion that is positioned in a first position and a second position. The first position and the second position interpose a color measurement position, in which the color patch is disposed, along a predetermined direction. The printer acquires measured values by carrying out spectral measurement for the color measurement position, the first position, and the second position, determines a reference value corresponding to the color measurement position based on the measured values of the first position and the second position, and determines a color measurement result of the color patch based on the measured value of the color measurement position and the reference value.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: February 21, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Patent number: 9547166
    Abstract: A spectroscopic measurement apparatus includes an actuator that is driven by applying a drive voltage, a gap detector that detects a dimension of a gap, and a voltage control section including a feedback loop that controls the drive voltage depending on a detection result of the gap detector. The voltage control section includes a comparator that outputs a voltage signal at a High level VH if an absolute value of a deviation between a drive amount of the actuator and a setting value of the drive amount exceeds a predetermined threshold based on the detection result after a predetermined time elapses from the start of driving of the actuator.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: January 17, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Ryohei Kuri, Teruyuki Nishimura
  • Patent number: 9522538
    Abstract: A printer includes a printing section that ejects an ink, and a spectrometer that disperses incident light. The spectrometer includes a window section that transmits the light, an optical filter device, and a light receiving section. The optical filter device includes a variable wavelength interference filter as a dispersing element that disperses light transmitted by the window section. The light receiving section receives the light which is dispersed by the variable wavelength interference filter. A dirtiness of the window section is detected based on measured values corresponding to each of a plurality of wavelengths obtained by spectrally measuring light from a reference object, and reference values corresponding to each of the plurality of wavelengths.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: December 20, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Patent number: 9506805
    Abstract: A printing apparatus includes: a discharging unit configured to discharge liquid onto a medium: a color measuring unit configured to measure a color of the medium on which the liquid has been discharged; a carriage on which the discharging unit and the color measuring unit are mounted; and a relative transporting unit configured to transport the medium and the carriage with respect to each other. The color measuring unit includes a variable wavelength interference filter configured to change a gap between reflecting films on substrates that face each other with the gap therebetween and shock-absorbing members are provided between the carriage and the color measuring unit.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 29, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Ryohei Kuri, Teruyuki Nishimura
  • Publication number: 20160286054
    Abstract: A printer moves a color chart relative to a spectrometer that carries out spectral measurement on the color chart. The color chart, which is a color measurement target of the printer, includes a color patch and a white portion that is positioned in a first position and a second position. The first position and the second position interpose a color measurement position, in which the color patch is disposed, along a predetermined direction. The printer acquires measured values by carrying out spectral measurement for the color measurement position, the first position, and the second position, determines a reference value corresponding to the color measurement position based on the measured values of the first position and the second position, and determines a color measurement result of the color patch based on the measured value of the color measurement position and the reference value.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 29, 2016
    Inventor: Ryohei KURI
  • Publication number: 20160263895
    Abstract: A printer includes a printing section that ejects an ink, and a spectrometer that disperses incident light. The spectrometer includes a window section that transmits the light, an optical filter device, and a light receiving section. The optical filter device includes a variable wavelength interference filter as a dispersing element that disperses light transmitted by the window section. The light receiving section receives the light which is dispersed by the variable wavelength interference filter. A dirtiness of the window section is detected based on measured values corresponding to each of a plurality of wavelengths obtained by spectrally measuring light from a reference object, and reference values corresponding to each of the plurality of wavelengths.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 15, 2016
    Inventor: Ryohei KURI
  • Publication number: 20160258813
    Abstract: A printer includes a spectroscope and a carriage moving unit. The spectroscope includes a wavelength-selective interference filter on which light from a measurement target is incident, and the carriage moving unit moves the spectroscope in an X direction with respect to the measurement target. If the measurement target is a color patch, the spectroscope performs spectrometry by changing a wavelength of light passing through the wavelength-selective interference filter in a first period during which the spectroscope is moved in the X direction, and passes light of an initial wavelength through the wavelength-selective interference filter at a start of measurement and at an end of measurement in the first period. A first output value that is a measured value from the spectrometry at the start of measurement is compared with a second output value that is a measured value from the spectrometry at the end of measurement.
    Type: Application
    Filed: March 2, 2016
    Publication date: September 8, 2016
    Inventor: Ryohei KURI
  • Publication number: 20160261774
    Abstract: A color irregularity detecting device includes a spectrometer which includes a dispersing element which disperses light from a measurement target and a light receiving element which receives light from the dispersing element, and a color irregularity detecting section which detects color irregularity, in which the color irregularity detecting device detects color irregularity by comparing measured values (reflectance) which are results of using the spectrometer to measure three measurement wavelengths of light among light from a measurement target region in which a predetermined color is printed on a medium to reference values corresponding to the predetermined color.
    Type: Application
    Filed: February 29, 2016
    Publication date: September 8, 2016
    Inventor: Ryohei KURI
  • Publication number: 20160176197
    Abstract: A printing apparatus includes: a discharging unit configured to discharge liquid onto a medium: a color measuring unit configured to measure a color of the medium on which the liquid has been discharged; a carriage on which the discharging unit and the color measuring unit are mounted; and a relative transporting unit configured to transport the medium and the carriage with respect to each other. The color measuring unit includes a variable wavelength interference filter configured to change a gap between reflecting films on substrates that face each other with the gap therebetween and shock-absorbing members are provided between the carriage and the color measuring unit.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: Ryohei KURI, Teruyuki NISHIMURA
  • Patent number: 9250129
    Abstract: A tunable etalon, driver circuit, a light receiving device, an I-V convertor circuit connected to the light receiving device, an amplifier circuit having a gain switching function, an AD convertor, a microprocessor, and a voltage setting memory having a gain table as data of gain of the amplifier circuit are provided, and preliminary measurement of a light reception voltage is performed based on a current detected by the light receiving device, and the gain of the amplifier circuit is adjusted to adjust the light reception voltage obtained by the preliminary measurement to a dynamic range of the AD convertor with reference to the gain table of the gain of the amplifier circuit with respect to the light reception voltage obtained by the preliminary measurement stored in the voltage setting memory.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: February 2, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Ryohei Kuri
  • Publication number: 20150212314
    Abstract: A spectroscopic measurement apparatus includes an actuator that is driven by applying a drive voltage, a gap detector that detects a dimension of a gap, and a voltage control section including a feedback loop that controls the drive voltage depending on a detection result of the gap detector. The voltage control section includes a comparator that outputs a voltage signal at a High level VH if an absolute value of a deviation between a drive amount of the actuator and a setting value of the drive amount exceeds a predetermined threshold based on the detection result after a predetermined time elapses from the start of driving of the actuator.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventors: Ryohei KURI, Teruyuki NISHIMURA