Patents by Inventor Masaya Kawarada

Masaya Kawarada 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: 20200207119
    Abstract: A dryer includes a heater in a conveyance area in which an object is conveyed, the heater configured to heat the object on which a liquid is applied, a heated portion in an outer area outside the conveyance area, the heated portion connected to the heater, a partition wall partitioning the conveyance area and the outer area, an air supply unit in the conveyance area, the air supply unit configured to feed air to the object conveyed in the conveyance area, and a duct in the outer area, the duct connected to the air supply unit and configured to take in air around the heated portion.
    Type: Application
    Filed: December 12, 2019
    Publication date: July 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Masaya Kawarada, Yasuhisa Katoh
  • Patent number: 10286699
    Abstract: An imaging device includes an imaging unit to obtain a captured image of a test pattern and a reference mark to locate the test pattern and at least one processor. The test pattern includes a pair of first marks and a second mark. The processor includes a position detector configured to detect the reference mark in the captured image and locate the pair of first marks and the second mark in the captured image, and a ratio calculator configured to calculate one of a first ratio between a distance between the pair of first marks in the captured image and a deviation of the second mark in the captured image, and a second ratio between the distance between the pair of first marks in the captured image and a distance from one of the pair of first marks to the second mark in the captured image.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: May 14, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Suguru Yokozawa, Kohta Aoyagi, Kenta Sasaki
  • Patent number: 10252517
    Abstract: An image forming apparatus includes an image forming device; an imaging device; and at least one processor including a pattern forming unit to cause a recording head to form a pair of first marks, with first and second nozzles disposed at a first distance from each other in a direction of conveyance of a recording medium, while the recording head moves in a first direction and cause the recording head to form a second mark while the recording head moves in a second direction, a position detector to detect positions of the first and second marks in a captured image, a ratio calculator to calculate a ratio between a distance between the first marks in the captured image and a deviation of the second mark in the captured image, and distance calculator to calculate a distance of the deviation based on the first distance and the ratio.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 9, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Kahei Nakamura, Masaya Kawarada, Kohta Aoyagi, Suguru Yokozawa, Nobuyuki Satoh
  • Patent number: 10207495
    Abstract: An image forming apparatus includes a conveyor to convey a recording medium; an image forming device including a recording head to form a test pattern including a first mark and a pair of second marks; an imaging device; and a processor. The processor includes a pattern forming unit to cause the image forming device to form one of the first and second marks and form the other after the conveyor conveys the recording medium by a predetermined conveyance amount, a position detector to detect positions of the first and second marks in the captured image, a ratio calculator to calculate a ratio between a distance between the second marks and deviation of the first mark in the captured image, and a distance calculator to calculate an actual distance of the deviation based on a theoretical distance between the second marks and the ratio.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: February 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Aoyagi, Suguru Yokozawa, Masaya Kawarada, Nobuyuki Satoh
  • Patent number: 10158767
    Abstract: An image capturing apparatus includes: a casing having an opening; a light source arranged inside the casing; a sensor arranged inside the casing and configured to capture, through the opening, an image of an object present outside the casing while the light source is on; and a distance calculator to calculate a distance between the casing and the object, based on an image that has been captured by the sensor and contains, within an image region of the object defined by the opening, a high-luminance region and low-luminance regions located more outside than the high-luminance region.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: December 18, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomohiro Sasa, Nobuyuki Satoh, Yuichi Sakurada, Kenji Morita, Masaya Kawarada, Daisaku Horikawa
  • Patent number: 10093087
    Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: October 9, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Kenji Morita, Yuichi Sakurada, Tomohiro Sasa, Daisaku Horikawa
  • Publication number: 20180147835
    Abstract: An image forming apparatus includes an image forming device; an imaging device; and at least one processor including a pattern forming unit to cause a recording head to form a pair of first marks, with first and second nozzles disposed at a first distance from each other in a direction of conveyance of a recording medium, while the recording head moves in a first direction and cause the recording head to form a second mark while the recording head moves in a second direction, a position detector to detect positions of the first and second marks in a captured image, a ratio calculator to calculate a ratio between a distance between the first marks in the captured image and a deviation of the second mark in the captured image, and distance calculator to calculate a distance of the deviation based on the first distance and the ratio.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 31, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Kahei Nakamura, Masaya Kawarada, Kohta Aoyagi, Suguru Yokozawa, Nobuyuki Satoh
  • Publication number: 20180141359
    Abstract: An imaging device includes an imaging unit to obtain a captured image of a test pattern and a reference mark to locate the test pattern and at least one processor. The test pattern includes a pair of first marks and a second mark. The processor includes a position detector configured to detect the reference mark in the captured image and locate the pair of first marks and the second mark in the captured image, and a ratio calculator configured to calculate one of a first ratio between a distance between the pair of first marks in the captured image and a deviation of the second mark in the captured image, and a second ratio between the distance between the pair of first marks in the captured image and a distance from one of the pair of first marks to the second mark in the captured image.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Suguru Yokozawa, Kohta Aoyagi, Kenta Sasaki
  • Publication number: 20180141329
    Abstract: An image forming apparatus includes a conveyor to convey a recording medium; an image forming device including a recording head to form a test pattern including a first mark and a pair of second marks; an imaging device; and a processor. The processor includes a pattern forming unit to cause the image forming device to form one of the first and second marks and form the other after the conveyor conveys the recording medium by a predetermined conveyance amount, a position detector to detect positions of the first and second marks in the captured image, a ratio calculator to calculate a ratio between a distance between the second marks and deviation of the first mark in the captured image, and a distance calculator to calculate an actual distance of the deviation based on a theoretical distance between the second marks and the ratio.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 24, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohta Aoyagi, Suguru Yokozawa, Masaya Kawarada, Nobuyuki Satoh
  • Publication number: 20170361605
    Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.
    Type: Application
    Filed: September 6, 2017
    Publication date: December 21, 2017
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Kenji Morita, Yuichi Sakurada, Tomohiro Sasa, Daisaku Horikawa
  • Patent number: 9782967
    Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: October 10, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaya Kawarada, Nobuyuki Satoh, Kenji Morita, Yuichi Sakurada, Tomohiro Sasa, Daisaku Horikawa
  • 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: 20160366288
    Abstract: An image capturing apparatus includes: a casing having an opening; a light source arranged inside the casing; a sensor arranged inside the casing and configured to capture, through the opening, an image of an object present outside the casing while the light source is on; and a distance calculator to calculate a distance between the casing and the object, based on an image that has been captured by the sensor and contains, within an image region of the object defined by the opening, a high-luminance region and low-luminance regions located more outside than the high-luminance region.
    Type: Application
    Filed: June 6, 2016
    Publication date: December 15, 2016
    Inventors: Tomohiro SASA, Nobuyuki SATOH, Yuichi SAKURADA, Kenji MORITA, Masaya KAWARADA, Daisaku HORIKAWA
  • Publication number: 20160347052
    Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.
    Type: Application
    Filed: May 24, 2016
    Publication date: December 1, 2016
    Inventors: Masaya KAWARADA, Nobuyuki SATOH, Kenji MORITA, Yuichi SAKURADA, Tomohiro SASA, 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
  • Patent number: 9370930
    Abstract: A nozzle testing device includes: a two-dimensional image sensor to capture an image of a pattern formed on a recording object by discharging ink from a nozzle row while moving the nozzle row and the recording object relative to each other in a direction orthogonal to the nozzle row; a light source unit provided such that regularly reflected light by the pattern forms a regular reflection area in the image of the pattern captured by the two-dimensional image sensor; and a detection unit to analyze the image to detect discharge failure of the nozzles. The regular reflection area is formed in the image such that a dimension in a direction corresponding to the direction of relative movement between the nozzle row and the recording object is greater than a dimension in a direction orthogonal to the direction corresponding to the direction of relative movement in the image.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: June 21, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Daisaku Horikawa, Nobuyuki Satoh, Mamoru Yorimoto, Kenji Morita, Masayuki Fujii, Suguru Yokozawa, Masahiro Hiranuma, Yuichi Sakurada, Tomohiro Sasa, Masaya Kawarada
  • Publication number: 20160171348
    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: Application
    Filed: December 9, 2015
    Publication date: June 16, 2016
    Inventors: Nobuyuki SATOH, Mamoru YORIMOTO, Kenji MORITA, Masaya KAWARADA, Daisaku HORIKAWA
  • Patent number: 9367013
    Abstract: An imaging device includes: a housing having an opening in a surface thereof facing a subject; a light source that irradiates the subject with light; a two-dimensional image sensor that captures, from inside of the housing through the opening; an image of the subject illuminated by the light source; an optical member that is disposed between the two-dimensional image sensor and the opening and that transmits light reflected off the subject; and a contamination inspection member that is disposed between the opening and the optical member and that causes inspection light for inspecting contamination on the optical member to be incident upon the two-dimensional image sensor via the optical member.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: June 14, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kenji Morita, Nobuyuki Satoh, Mamoru Yorimoto, Masayuki Fujii, Daisaku Horikawa, Suguru Yokozawa, Masahiro Hiranuma, Masaya Kawarada
  • Patent number: 9347873
    Abstract: An image forming apparatus includes a printing unit that prints at least one object image using a color material; a color information acquiring unit that acquires color information of the object image; and a control unit that starts one of colorimetry of the object image using the color information acquired by the color information acquiring unit and color adjustment of the printing unit after a variation amount of color information of the object image measured at different points of time is equal to or smaller than a predetermined threshold.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: May 24, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Fujii, Nobuyuki Satoh, Mamoru Yorimoto, Masato Kobayashi, Hiroshi Matsumoto, Daisaku Horikawa, Suguru Yokozawa, Kenji Morita, Yuichi Sakurada, Tomohiro Sasa, Masaya Kawarada