Patents by Inventor Masayuki Fukunaga

Masayuki Fukunaga 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: 11125573
    Abstract: A pickup system for picking up a product using a vehicle having an autonomous travelling function includes a communication unit configured to accept a pickup request from a user, a travel control unit configured to cause the vehicle to autonomously travel to a user position specified in the pickup request accepted through the communication unit, and an informing unit configured to inform the user that, when the vehicle arrives at the user position, the arrived vehicle is a vehicle that is to pick up a product in response to the pickup request.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 21, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohito Matsuoka, Seiichi Tsunoda, Jiro Goto, Masayuki Yamada, Yasutaka Eto, Keima Fukunaga
  • Patent number: 10776934
    Abstract: A movement amount detecting device performs discrete Fourier transform onto N-th image data and N+1-th image data, thereby generating N-th wave number space data and N+1-th wave number space data. The movement amount detecting device obtains a target speed of a sheet, and determines a cutoff value based on the obtained target speed and an exposure time in an image sensor. The movement amount detecting device calculates an amount of movement of the sheet based on a phase difference between the N-th wave number space data and the N+1-th wave number space data in a wave number component smaller than the cutoff value.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: September 15, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaki Kato, Yuji Kobayashi, Masayuki Fukunaga
  • Patent number: 10754278
    Abstract: An image forming apparatus including: a fixer that fixes a toner image formed on a recording medium by pressing and heating the recording medium nipped in a nip portion formed by causing two rotating bodies to pressedly abut on each other, and conveying the recording medium by rotating the rotating bodies; a motor that drives the rotating bodies by transmitting a torque to at least one of the rotating bodies; a torque detector that detects the torque transmitted to the rotating body by the motor; a temperature detector that detects temperature of the rotating body; a speed detector that detects a conveyance speed for conveying the recording medium by the fixer; and a controller that corrects the detected torque based on at least any one of the detected temperature and the detected conveyance speed and predicts a life of the fixer based on the corrected torque.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: August 25, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masayuki Fukunaga, Toshiaki Tanaka, Masayuki Watanabe, Mineo Yamamoto
  • Publication number: 20200255248
    Abstract: An image forming apparatus that has a transfer device that includes an intermediate transfer belt that is tensioned by a plurality of support rollers, a secondary transfer roller that faces one of the support rollers via the intermediate transfer belt, a cam that adjust a pressing force that presses the intermediate transfer belt by the secondary transfer roller, a motor that drives the cam, and a conveyor that conveys a recording medium to a transfer nip formed between the intermediate transfer belt and the secondary transfer roller is provided with a controller that controls an operation of the motor. The controller executes first control of operating the motor with a constant torque and stopping the motor when a rotation angular speed of the motor is less than or equal to a first threshold and second control of operating the motor at a predetermined timing to adjust a transfer nip amount.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventors: Remi ISHIKAWA, Eiji NISHIKAWA, Satoshi MIYAJIMA, Masayuki FUKUNAGA
  • Patent number: 10474085
    Abstract: An image formation apparatus includes a conveyor configured to convey a moving element on which an image is formed, a generator configured to generate a first image and a second image by shooting the conveyed moving element at different timing, a detector configured to sense a first distance between the generator and the moving element at the time of shooting of the first image and sense a second distance between the generator and the moving element at the time of shooting of the second image, and a hardware processor configured to calculate a speed of conveyance of the moving element based on the first image, the second image, the first distance, and the second distance, and output the speed of conveyance.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: November 12, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuji Kobayashi, Takaki Kato, Masayuki Fukunaga
  • Publication number: 20190286022
    Abstract: An image forming apparatus including: a fixer that fixes a toner image formed on a recording medium by pressing and heating the recording medium nipped in a nip portion formed by causing two rotating bodies to pressedly abut on each other, and conveying the recording medium by rotating the rotating bodies; a motor that drives the rotating bodies by transmitting a torque to at least one of the rotating bodies; a torque detector that detects the torque transmitted to the rotating body by the motor; a temperature detector that detects temperature of the rotating body; a speed detector that detects a conveyance speed for conveying the recording medium by the fixer; and a controller that corrects the detected torque based on at least any one of the detected temperature and the detected conveyance speed and predicts a life of the fixer based on the corrected torque.
    Type: Application
    Filed: February 14, 2019
    Publication date: September 19, 2019
    Inventors: Masayuki Fukunaga, Toshiaki Tanaka, Masayuki Watanabe, Mineo Yamamoto
  • Publication number: 20190271932
    Abstract: An image forming device includes: a fixing device that includes a fixing rotary member and thermally fixes a toner image onto a recording sheet by the fixing rotary member; a temperature sensor that senses a temperature of the fixing rotary member as a fixing temperature; a driving unit that drives the fixing rotary member to rotate; a torque sensor that senses a torque value of the driving unit in a torque sensing period in which at least one of the fixing temperature and a driving speed falls within a predetermined range, the driving speed being a speed of the driving unit for driving the fixing rotary member to rotate; and a prediction unit that predicts an operating life of the fixing device based on the sensed torque value.
    Type: Application
    Filed: February 18, 2019
    Publication date: September 5, 2019
    Applicant: KONICA MINOLTA, INC.
    Inventors: Toshiaki TANAKA, Masayuki WATANABE, Masayuki FUKUNAGA, Mineo YAMAMOTO
  • Patent number: 10250767
    Abstract: An image forming apparatus includes: a conveying path on which a recording medium is conveyed; an image capturer that includes a light source and radiates light from the light source to capture the recording medium being conveyed at different timings to generate at least two images including a first image and a second image; and a movement amount calculator that calculates a movement amount of the recording medium between capturing timings of the first and second images, wherein the movement amount calculator: calculates an index distance which is a distance in a conveying direction of a pattern formed by reflected light from the recording medium; calculates a ratio between the index distance and a reference distance used for comparison with the index distance; and calculates a movement amount of the recording medium between the capturing timings of the first and second images.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: April 2, 2019
    Assignee: Konica Minolta, Inc.
    Inventors: Yuji Kobayashi, Takaki Kato, Masayuki Fukunaga
  • Patent number: 10116808
    Abstract: A moving amount detector that sets a movable member included in a device of a mounting destination or an object conveyed by the device as a detection target and detects a moving amount of the detection target includes: an imaging unit that repeatedly captures images of the detection target at a constant sampling period while the detection target moves; and a moving amount calculating unit that selects two images to be compared with each other among a series of images of the detection target captured by the imaging unit such that an imaging time difference between the two images is increased as a difference due to moving of the detection target is further generated between the two images and calculates a moving amount of the detection target based on the difference.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: October 30, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaki Kato, Masayuki Fukunaga, Yuji Kobayashi
  • Patent number: 10054888
    Abstract: A device for detecting a travel distance of a sheet is provided. The device includes a light source for irradiating the sheet surface; an imaging sensor for capturing an image of a pattern of the sheet surface by light reflected from the sheet; a discrete Fourier transformation portion for performing discrete Fourier transformation on two patterns obtained by image capturing at a time interval by the imaging sensor; a high wave number component removal portion for using a threshold determined based on a cycle of concave-convex of the sheet surface to remove a high wave number component from the two patterns having been subjected to the discrete Fourier transformation; and a travel distance calculation portion for determining a travel distance of the sheet based on a phase relationship between the two patterns from which the high wave number component removal portion has removed the high wave number component.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: August 21, 2018
    Assignee: Konica Minolta, Inc.
    Inventors: Yuji Kobayashi, Takaki Kato, Masayuki Fukunaga
  • Publication number: 20180157941
    Abstract: An image forming apparatus includes: a conveying path on which a recording medium is conveyed; an image capturer that includes a light source and radiates light from the light source to capture the recording medium being conveyed at different timings to generate at least two images including a first image and a second image; and a movement amount calculator that calculates a movement amount of the recording medium between capturing timings of the first and second images, wherein the movement amount calculator: calculates an index distance which is a distance in a conveying direction of a pattern formed by reflected light from the recording medium; calculates a ratio between the index distance and a reference distance used for comparison with the index distance; and calculates a movement amount of the recording medium between the capturing timings of the first and second images.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 7, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Yuji Kobayashi, Takaki Kato, Masayuki Fukunaga
  • Publication number: 20180144484
    Abstract: A movement amount detecting device performs discrete Fourier transform onto N-th image data and N+1-th image data, thereby generating N-th wave number space data and N+1 -th wave number space data. The movement amount detecting device obtains a target speed of a sheet, and determines a cutoff value based on the obtained target speed and an exposure time in an image sensor. The movement amount detecting device calculates an amount of movement of the sheet based on a phase difference between the N-th wave number space data and the N+1-th wave number space data in a wave number component smaller than the cutoff value.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 24, 2018
    Applicant: KONICA MINOLTA, INC.
    Inventors: Takaki KATO, Yuji KOBAYASHI, Masayuki FUKUNAGA
  • Patent number: 9851674
    Abstract: An emission unit of a displacement detector emits laser light to a range in a space in which a target moves. A detection unit detects a distribution of amounts of light reflected from a capture region in the predefined range. Based on a shift of speckle pattern indicated by a difference between the distributions of amounts of reflected light that the detection unit detects at different times, a calculation unit calculates a displacement of the target. A correction unit measures a speckle contrast from the distribution of amounts of reflected light, and based on an error between the measured value and a reference value, corrects the amount of laser light. The reference value is set to the value of a speckle contrast in a case in which the amounts of reflected light fall within the detectable range of the detection unit.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: December 26, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaki Kato, Yuji Kobayashi, Masayuki Fukunaga
  • Publication number: 20170235267
    Abstract: A device for detecting a travel distance of a sheet is provided. The device includes a light source for irradiating the sheet surface; an imaging sensor for capturing an image of a pattern of the sheet surface by light reflected from the sheet; a discrete Fourier transformation portion for performing discrete Fourier transformation on two patterns obtained by image capturing at a time interval by the imaging sensor; a high wave number component removal portion for using a threshold determined based on a cycle of concave-convex of the sheet surface to remove a high wave number component from the two patterns having been subjected to the discrete Fourier transformation; and a travel distance calculation portion for determining a travel distance of the sheet based on a phase relationship between the two patterns from which the high wave number component removal portion has removed the high wave number component.
    Type: Application
    Filed: January 25, 2017
    Publication date: August 17, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Yuji KOBAYASHI, Takaki KATO, Masayuki FUKUNAGA
  • Publication number: 20170227906
    Abstract: An emission unit of a displacement detector emits laser light to a range in a space in which a target moves. A detection unit detects a distribution of amounts of light reflected from a capture region in the predefined range. Based on a shift of speckle pattern indicated by a difference between the distributions of amounts of reflected light that the detection unit detects at different times, a calculation unit calculates a displacement of the target. A correction unit measures a speckle contrast from the distribution of amounts of reflected light, and based on an error between the measured value and a reference value, corrects the amount of laser light. The reference value is set to the value of a speckle contrast in a case in which the amounts of reflected light fall within the detectable range of the detection unit.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 10, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Takaki KATO, Yuji KOBAYASHI, Masayuki FUKUNAGA
  • Publication number: 20170168444
    Abstract: An image formation apparatus includes a conveyor configured to convey a moving element on which an image is formed, a generator configured to generate a first image and a second image by shooting the conveyed moving element at different timing, a detector configured to sense a first distance between the generator and the moving element at the time of shooting of the first image and sense a second distance between the generator and the moving element at the time of shooting of the second image, and a hardware processor configured to calculate a speed of conveyance of the moving element based on the first image, the second image, the first distance, and the second distance, and output the speed of conveyance.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 15, 2017
    Applicant: Konica Minolta, Inc.
    Inventors: Yuji Kobayashi, Takaki Kato, Masayuki Fukunaga
  • Patent number: 9656821
    Abstract: A multi-feed detection apparatus for detecting multi-feed of a sheet conveyed along a paper path is provided. The apparatus includes a first movement amount sensor disposed on the paper path to face a first surface of the sheet to detect a movement amount of the sheet; a second movement amount sensor disposed, on the paper path, in a position at which the first movement amount sensor is disposed to face a second surface of the sheet to detect a movement amount of the sheet; and a determination portion configured to determine that a conveyance state of the sheet is multi-feed when a difference between the movement amount of the sheet detected by the first movement amount sensor and the movement amount of the sheet detected by the second movement amount sensor is equal to or greater than a threshold.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: May 23, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takaki Kato, Toshinori Inomoto, Masayuki Fukunaga, Isao Watanabe, Toshiaki Tanaka
  • Publication number: 20170094071
    Abstract: A moving amount detector that sets a movable member included in a device of a mounting destination or an object conveyed by the device as a detection target and detects a moving amount of the detection target includes: an imaging unit that repeatedly captures images of the detection target at a constant sampling period while the detection target moves; and a moving amount calculating unit that selects two images to be compared with each other among a series of images of the detection target captured by the imaging unit such that an imaging time difference between the two images is increased as a difference due to moving of the detection target is further generated between the two images and calculates a moving amount of the detection target based on the difference.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 30, 2017
    Applicant: Konica Minolta, Inc.
    Inventors: Takaki Kato, Masayuki Fukunaga, Yuji Kobayashi
  • Publication number: 20160194168
    Abstract: A multi-feed detection apparatus for detecting multi-feed of a sheet conveyed along a paper path is provided. The apparatus includes a first movement amount sensor disposed on the paper path to face a first surface of the sheet to detect a movement amount of the sheet; a second movement amount sensor disposed, on the paper path, in a position at which the first movement amount sensor is disposed to face a second surface of the sheet to detect a movement amount of the sheet; and a determination portion configured to determine that a conveyance state of the sheet is multi-feed when a difference between the movement amount of the sheet detected by the first movement amount sensor and the movement amount of the sheet detected by the second movement amount sensor is equal to or greater than a threshold.
    Type: Application
    Filed: December 29, 2015
    Publication date: July 7, 2016
    Inventors: Takaki KATO, Toshinori INOMOTO, Masayuki FUKUNAGA, Isao WATANABE, Toshiaki TANAKA
  • Patent number: 7675738
    Abstract: A gas insulated switchgear has: circuit breakers, circuit breaker vessels, first disconnector and maintenance earthning switches connected to first bus bars connected to circuit breaker vessels and also to main bus bars, second disconnector and maintenance earthning switches connected to second bus bars connected to the circuit breaker vessels, circuit breaker operating mechanisms, first and second disconnector and maintenance earthning switch operating mechanisms, and first and second disconnector and maintenance earthning switch operation links for linking the disconnector and maintenance earthning switches and the operating mechanisms for three phases. The second disconnector and maintenance earthning switch operation links are arranged so as to pass through inter-phases of the first bus bars and the operating panels of the circuit breaker operating mechanism and the first and second disconnector and maintenance earthning switch operating mechanisms of each phase are arranged on a common flat plane.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: March 9, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Fukunaga, Masayuki Kosakada, Nobuaki Okanari