Patents by Inventor Mamoru Yorimoto

Mamoru Yorimoto 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: 10674041
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: June 2, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Suguru Yokozawa, Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada
  • Patent number: 10399803
    Abstract: A feeding device includes a plurality of suction units, disposed above a conveyed medium stacked on a stacker, to attract the conveyed medium. At least one of the plurality of suction units includes a rotary fan including a board and a plurality of walls extending from the board; and a driver to rotate the rotary fan. The at least one of the plurality of suction units generates a vortex air with a side of the board with the plurality of walls directed to the conveyed medium. The at least one of the plurality of suction units being a suction unit generates a vortex air.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: September 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kyosuke Nakada, Kiyoshi Hata, Mamoru Yorimoto, Yuichiro Maeyama, Isao Matsushima, Takeshi Watanabe, Kahei Nakamura
  • Publication number: 20190174025
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Application
    Filed: February 5, 2019
    Publication date: June 6, 2019
    Inventors: Nobuyuki SATOH, Yasuyuki SUZUKI, Masato KOBAYASHI, Suguru YOKOZAWA, Tatsuhiko OKADA, Mamoru YORIMOTO, Daisaku HORIKAWA, Yuichi SAKURADA
  • Patent number: 10244147
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 26, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Suguru Yokozawa, Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada
  • Patent number: 10081506
    Abstract: A feeding device to feed a conveyed medium stacked on a stacker, includes a first suction unit, a second suction unit, and third suction units. The first suction unit includes a suction chamber; a suction fan to exhaust air from the suction chamber; and a first driver to rotate the suction fan. The suction units are disposed above the conveyed medium stacked on the stacker. The second suction unit includes a rotary fan including a board and a plurality of walls extending from the board; and a second driver to rotate the rotary fan. The second suction unit generates a vortex flow directed to the conveyed medium. The plurality of third suction units is disposed in a direction perpendicular to a conveyance direction of the conveyed medium and attracts ends of the conveyed medium in the direction perpendicular to the conveyance direction.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: September 25, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Watanabe, Kyosuke Nakada, Kiyoshi Hata, Mamoru Yorimoto, Yuichiro Maeyama, Isao Matsushima, Kahei Nakamura
  • Publication number: 20180167534
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Inventors: Nobuyuki SATOH, Yasuyuki SUZUKI, Masato KOBAYASHI, Suguru YOKOZAWA, Tatsuhiko OKADA, Mamoru YORIMOTO, Daisaku HORIKAWA, Yuichi SAKURADA
  • Patent number: 9944103
    Abstract: An image forming apparatus includes a recording head in which a plurality of nozzles for discharging liquid droplets; and a pattern forming unit configured to form a test pattern used for positional deviation adjustment including a first pattern serving as a reference pattern and a second pattern serving as an adjustment pattern. The first pattern and the second pattern each are a linear pattern that is parallel to a nozzle arrangement direction and has a disconnected portion. The disconnected portion of the first pattern and the disconnected portion of the second pattern are shifted from each other in the nozzle arrangement direction.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 17, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada, Makoto Moriwaki
  • Patent number: 9906688
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 27, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Suguru Yokozawa, Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada
  • Patent number: 9744785
    Abstract: A medium identification device identifies a type of a recording medium used for image formation. The medium identification device includes: a two-dimensional image sensor that captures an image of the recording medium; and an identifying unit that obtains a glossiness evaluation value indicating glossiness of the recording medium, a surface roughness evaluation value indicating surface roughness of the recording medium, and a coloring evaluation value indicating coloring of the recording medium, using image data of a specular reflection region reflecting specular reflection light from the recording medium and image data of a diffused reflection region reflecting diffused reflection light from the recording medium, the regions being in the image of the recording medium, and identifies the type of the recording medium by combining determination using the glossiness evaluation value, determination using the surface roughness evaluation value, and determination using the coloring evaluation value.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: August 29, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Suguru Yokozawa, Nobuyuki Satoh, Mamoru Yorimoto, Kenji Morita, Masayuki Fujii, Daisaku Horikawa
  • Publication number: 20170210579
    Abstract: A feeding device to feed a conveyed medium stacked on a stacker, includes a first suction unit, a second suction unit, and third suction units. The first suction unit includes a suction chamber; a suction fan to exhaust air from the suction chamber; and a first driver to rotate the suction fan. The suction units are disposed above the conveyed medium stacked on the stacker. The second suction unit includes a rotary fan including a board and a plurality of walls extending from the board; and a second driver to rotate the rotary fan. The second suction unit generates a vortex flow directed to the conveyed medium. The plurality of third suction units is disposed in a direction perpendicular to a conveyance direction of the conveyed medium and attracts ends of the conveyed medium in the direction perpendicular to the conveyance direction.
    Type: Application
    Filed: January 23, 2017
    Publication date: July 27, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Takeshi WATANABE, Kyosuke NAKADA, Kiyoshi HATA, Mamoru YORIMOTO, Yuichiro MAEYAMA, Isao MATSUSHIMA, Kahei NAKAMURA
  • Publication number: 20170210578
    Abstract: A feeding device includes a plurality of suction units, disposed above a conveyed medium stacked on a stacker, to attract the conveyed medium. At least one of the plurality of suction units includes a rotary fan including a board and a plurality of walls extending from the board; and a driver to rotate the rotary fan. The at least one of the plurality of suction units generates a vortex air with a side of the board with the plurality of walls directed to the conveyed medium. The at least one of the plurality of suction units being a suction unit generates a vortex air.
    Type: Application
    Filed: January 20, 2017
    Publication date: July 27, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kyosuke NAKADA, Kiyoshi HATA, Mamoru YORIMOTO, Yuichiro MAEYAMA, Isao MATSUSHIMA, Takeshi WATANABE, Kahei NAKAMURA
  • Patent number: 9716124
    Abstract: An apparatus includes: a light source; a two-dimensional image sensor that receives reflected light from a subject including specular light of the source and outputs an image of the subject; and an optical member arranged in an optical path of light emitted from the source to the subject. When a specular position of the source in the subject arranged apart from the two-dimensional image sensor by a certain distance is defined as a first specular position, whereas a specular position of the source in the optical member is defined as a second specular position, a relative positional relation of the optical member and the source with respect to the two-dimensional image sensor is determined so that a difference between an incident angle from the source toward the first specular position and an incident angle from the source toward the second specular position is a reference value or more.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: July 25, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Mamoru Yorimoto, Nobuyuki Satoh, Masato Kobayashi, Masayuki Fujii, Hiroshi Matsumoto, Daisaku Horikawa, Suguru Yokozawa, Kenji Morita
  • Patent number: 9654671
    Abstract: An imaging device including a light source; a two-dimensional image sensor that receives reflected light from a subject containing specular light of the light source and outputs an image of the subject; a light transmission member disposed in an optical path of light emitted from the light source to the subject; and a light shielding unit that, when a position on the subject at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a first specular position, whereas a position on the light transmission member at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a second specular position, shields the light directed from the light source toward the second specular position without shielding the light directed from the light source toward the first specular position.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: May 16, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Mamoru Yorimoto, Nobuyuki Satoh, Kenji Morita, Masaya Kawarada, Masahiro Hiranuma, Daisaku Horikawa
  • Patent number: 9609163
    Abstract: An image capturing device includes: a two-dimensional image sensor that captures an image of a predetermined image capture area including a subject; a light source that illuminates the image capture area; and a light blocking member that blocks light traveling from the light source toward a specular reflection position, the specular reflection position being a position that is in the image capture area and where, if light travels from the light source, the light would be specularly reflected to the two-dimensional sensor. The light blocking member is arranged outside the image capture area.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: March 28, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Mamoru Yorimoto, Kenji Morita, Masahiro Hiranuma, Daisaku Horikawa
  • Publication number: 20170034397
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 2, 2017
    Inventors: Nobuyuki SATOH, Yasuyuki SUZUKI, Masato KOBAYASHI, Suguru YOKOZAWA, Tatsuhiko OKADA, Mamoru YORIMOTO, Daisaku HORIKAWA, Yuichi SAKURADA
  • Patent number: 9549097
    Abstract: An imaging device comprises: a two-dimensional image sensor that includes a plurality of light receiving units capable of reading an output value individually according to a volume of received light thereof; a receiving unit that receives a control signal that specifies an operation mode of the two-dimensional image sensor that is predetermined according to a purpose of using the output value; and a sensor controller that sets, on the basis of the control signal received by the receiving unit, an imaging area representing an area of a light receiving unit that reads the output value from among the light receiving units of the two-dimensional image sensor and controls reading of the output value.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: January 17, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Matsumoto, Nobuyuki Satoh, Mamoru Yorimoto, Masato Kobayashi, Masayuki Fujii, Satoshi Hirata
  • Patent number: 9527278
    Abstract: An image forming apparatus includes a recording-head carrier including a recording head for ejecting a liquid droplet onto a recording medium, a relative moving unit configured to relatively move the recording-head carrier and the recording medium; an image recording unit configured to drive the recording head by a driving signal having a driving waveform to eject liquid droplets toward the recording medium while relatively moving the recording-head carrier and the recording medium; a driving-waveform determining unit configured to determine the driving waveform of the driving signal based on a detected temperature near the recording head; a drive-timing determining unit configured to determine drive timing at which the recording head is driven by the driving signal, based on the detected temperature; and a drive control unit configured to set the driving waveform and the drive timing to the image recording unit to drive the recording head.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: December 27, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuichi Sakurada, Mamoru Yorimoto, Tatsuhiko Okada, Daisaku Horikawa, Makoto Moriwaki
  • Patent number: 9516179
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: December 6, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Suguru Yokozawa, Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada
  • Publication number: 20160243866
    Abstract: A medium identification device identifies a type of a recording medium used for image formation. The medium identification device includes: a two-dimensional image sensor that captures an image of the recording medium; and an identifying unit that obtains a glossiness evaluation value indicating glossiness of the recording medium, a surface roughness evaluation value indicating surface roughness of the recording medium, and a coloring evaluation value indicating coloring of the recording medium, using image data of a specular reflection region reflecting specular reflection light from the recording medium and image data of a diffused reflection region reflecting diffused reflection light from the recording medium, the regions being in the image of the recording medium, and identifies the type of the recording medium by combining determination using the glossiness evaluation value, determination using the surface roughness evaluation value, and determination using the coloring evaluation value.
    Type: Application
    Filed: May 3, 2016
    Publication date: August 25, 2016
    Inventors: Suguru YOKOZAWA, Nobuyuki SATOH, Mamoru YORIMOTO, Kenji MORITA, Masayuki FUJII, Daisaku HORIKAWA
  • Patent number: 9406000
    Abstract: An imaging device includes: a sensor unit that is arranged at a predetermined position inside a casing, and that images a subject outside the casing through an opening portion, with a part of an imaging region, while imaging a reference chart with another part of the imaging region; and a light absorption member that is arranged in an optical path of light from a illumination light source toward a specular-reflection position from which specular-reflection light of the illumination light source is entered to the sensor unit, in the imaging range. The light absorption member has at least a first surface on which light from the illumination light source toward the specular-reflection position is irradiated, and a second surface that faces to the first surface, and reflected light that has been reflected on the first surface and then on the second surface is further directed toward the first surface.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: August 2, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuyuki Satoh, Mamoru Yorimoto, Kenji Morita, Masaya Kawarada, Daisaku Horikawa