Patents by Inventor Kimiharu Yamazaki

Kimiharu Yamazaki 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: 20230010640
    Abstract: A reading device and an image forming apparatus are provided. The reading device includes an image reading device configured to read an image on a recording medium being conveyed, a background device serving as a background image when the image is read by the image reading device, and a foreign-object detector configured to compare a first read image obtained as the background device is read by the image reading device with a second read image obtained as the background device and the recording medium are read by the image reading device to detect an attached foreign object. The image forming apparatus includes the reading device and an image forming device.
    Type: Application
    Filed: May 26, 2022
    Publication date: January 12, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshio KONNO, Tatsuya ISHII, Tohru MATSUMOTO, Kohta AOYAGI, Satoshi NAKAYAMA, Hideyo MAKINO, Susumu MIKAJIRI, Kimiharu YAMAZAKI
  • Patent number: 11524513
    Abstract: A conveyance apparatus includes a plurality of conveyors and an image reader. The plurality of conveyors conveys a recording material. The image reader reads a pattern image on the recording material being conveyed. The conveyance apparatus further includes circuitry to control the image reader. The circuitry controls the image reader to read the pattern image on the recording material in a period including a timing at which a trailing edge of the recording material being conveyed by at least two of the plurality of conveyors exits an upstream conveyor among the at least two of the plurality of conveyors in a direction of conveyance of the recording material.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: December 13, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Aoyagi, Hideyo Makino, Susumu Mikajiri, Kimiharu Yamazaki, Yoshinari Onuma, Satoshi Nakayama
  • Publication number: 20220318582
    Abstract: A reading apparatus includes a reading device and circuitry. The reading device reads a recording medium in a direction intersecting a conveyance direction of the recording medium. The circuitry detects a reference image for cutting processing of the recording medium, based on read information read by the reading device.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuya ISHII, Kohta AOYAGI, Kimiharu YAMAZAKI, Tohru MATSUMOTO, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Publication number: 20220321708
    Abstract: A reading apparatus includes a reading device and processing circuitry. The reading device reads a recording medium. The processing circuitry outputs maintenance information based on read information read by the reading device.
    Type: Application
    Filed: March 22, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Tohru MATSUMOTO, Kohta AOYAGI, Tatsuya ISHII, Kimiharu YAMAZAKI, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Publication number: 20220291618
    Abstract: An image reading device includes an image reader and circuitry. The image reader is configured to read an image on a recording medium. The circuitry is configured to obtain defective image information and defect type information based on the image on the recording medium read by the image reader, and determine an abnormality of the image on the recording medium based on the defective image information and the defect type information.
    Type: Application
    Filed: February 28, 2022
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu YAMAZAKI, Kohta AOYAGI, Tatsuya ISHII, Tohru MATSUMOTO, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHITSUKA
  • Publication number: 20220286576
    Abstract: An image inspecting device includes an abnormality detector and circuitry. The abnormality detector is configured to detect an abnormality of an inspection object image. The circuitry is configured to set a non-detection area to be excluded from a detection object area within which the abnormality detector detects an image abnormality and set an area including an abnormality detection portion as the non-detection area when a detection result obtained by the abnormality detector satisfies a non-detection condition.
    Type: Application
    Filed: February 7, 2022
    Publication date: September 8, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryoh ISHITSUKA, Kohta AOYAGI, Ryosuke EBINUMA, Satoshi NAKAYAMA, Kimiharu YAMAZAKI, Tohru MATSUMOTO, Tatsuya ISHII
  • Publication number: 20220286572
    Abstract: An image inspector includes a recording device and circuitry. The reading device is configured to read an image on a recording medium. The circuitry is configured to determine whether the recording medium has a wrinkle and an edge folding based on a plurality of positions on the image on the recording medium read by the reading device satisfying a predetermined relation. The circuitry is configured to determine whether the recording medium has the wrinkle based on the predetermined relation, and then determine whether the recording medium has the edge folding based on the predetermined relation.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 8, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi NAKAYAMA, Tohru MATSUMOTO, Kohta AOYAGI, Ryosuke EBINUMA, Ryoh ISHITSUKA, Kimiharu YAMAZAKI, Tatsuya ISHII
  • Publication number: 20220263963
    Abstract: An image abnormality detecting device includes an image reader, an abnormality detector, a pattern holder, and circuitry. The image reader is configured to read an image on a recording medium. The abnormality detector is configured to detect abnormality of the image based on read information of the image on the recording medium, read by the image reader. The pattern holder has a check pattern and is disposed within a reading area of the image reader. The circuitry is configured to inspect a detecting operation of the abnormality detector based on read information of the check pattern read by the image reader.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohta AOYAGI, Tohru MATSUMOTO, Kimiharu YAMAZAKI, Satoshi NAKAYAMA, Ryosuke EBINUMA, Ryoh ISHIZUKA, Tatsuya ISHII
  • Patent number: 11397880
    Abstract: A conveyance device includes a conveyance roller pair to convey a recording medium to an image reading position of an image reading unit. The conveyance roller pair includes a drive roller and a driven roller. The driven roller contacts the drive roller and rotates following the drive roller. The drive roller has a diameter satisfying a relation in which a detection mark on the recording medium is on a position away from a leading end of the recording medium by an integral multiple of a circumference of the drive roller in a conveyance direction of the recording medium.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: July 26, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Satoshi Nakayama, Kohta Aoyagi, Hiroki Yamamura
  • Publication number: 20220219932
    Abstract: An image reading device includes a reader, a transparent member, an opposing member, first and second conveyance rotators, and circuitry. The reader reads a sheet. The transparent member is disposed between the reader and the sheet. The opposing member is disposed facing the reader via the transparent member. The first conveyance rotator is disposed upstream from the reader in a conveyance direction of the sheet. The second conveyance rotator is disposed downstream from the reader in the conveyance direction. The circuitry cause the first conveyance rotator and the second conveyance rotator to convey a cleaning sheet at respective conveying speeds different from each other and bring the cleaning sheet into contact with at least one of the transparent member or the opposing member.
    Type: Application
    Filed: December 23, 2021
    Publication date: July 14, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu YAMAZAKI, Hideyo MAKINO, Susumu MIKAJIRI, Tohru MATSUMOTO, Satoshi NAKAYAMA, Kohta AOYAGI, Ryosuke EBINUMA, Tatsuya ISHII
  • Patent number: 11360422
    Abstract: A position detector includes a reading device, a position reference member having a mark opposite the reading device, and circuitry. The circuitry controls the reading device to detect the contour of the processing target and the position of the image pattern on the processing target and the position of the mark and corrects a processing position for the processing target to offset distortion of the reading device.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 14, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Daisuke Nikaku, Masamoto Nakazawa, Ryohma Ikemoto, Osamu Inage, Tatsuya Ishii, Satoshi Iwanami, Hideyo Makino, Kimiharu Yamazaki, Kohta Aoyagi, Satoshi Nakayama
  • Patent number: 11310382
    Abstract: An image reading device includes a transparent member unit including a transparent member, an opposing member opposed to the transparent member, and a reading mechanism. The reading mechanism irradiates the opposing member and a medium being conveyed between the transparent member and the opposing member with light through the transparent member and receive reflected light from the opposing member and the medium. The reading mechanism includes a position adjuster to which the transparent member unit is secured and a guide to guide the transparent member unit in a direction intersecting a direction of conveyance of the medium to detachably attach the transparent member unit to the reading mechanism. The position adjuster changes a position at which the transparent member unit is secured with respect to the reading mechanism. The transparent member unit is secured to the position adjuster.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: April 19, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Nakayama, Susumu Mikajiri, Kimiharu Yamazaki, Tohru Matsumoto, Kohta Aoyagi, Hideyo Makino, Ryosuke Ebinuma
  • Patent number: 11181854
    Abstract: An image forming apparatus includes a plurality of temperature-influence members, a first-point temperature acquisition unit, a second-point temperature estimation unit, and a controller. The plurality of temperature-influence members have influence on a temperature of a recording medium on which an image is formed. The first-point temperature acquisition unit is configured to detect or estimate a temperature of the recording medium at a first point. The second-point temperature estimation unit is configured to estimate a temperature of the recording medium at a second point, based on a detection result of at least one of a temperature of the recording medium at a point different from the second point and a temperature of a member or atmosphere. The controller is configured to control the plurality of temperature-influence members, based on an acquisition result from the first-point temperature acquisition unit and an estimation result from the second-point temperature estimation unit.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: November 23, 2021
    Assignees: RICOH COMPANY, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Kaori Hemmi, Koichi Kato, Kimiharu Yamazaki, Kazuyoshi Fushinobu, Shunsuke Kawasaki, Shinichi Kuramoto
  • Patent number: 11153453
    Abstract: An image reading device includes a background member, an illumination unit opposed to the background member, and a reader. The illumination unit emits light to a recording medium having an image thereon. The reader receives a reflection from the recording medium to read the image. The background member has a facing surface that faces the recording medium. The facing surface includes a reference portion on a center portion in a width direction of the background member. The reference portion has a higher reflectance than an end portion of the facing surface in the width direction.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: October 19, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Nakayama, Susumu Mikajiri, Hideyo Makino, Yoshinari Onuma, Kimiharu Yamazaki, Kohta Aoyagi
  • Publication number: 20210297543
    Abstract: An image reading device includes a transparent member unit including a transparent member, an opposing member opposed to the transparent member, and a reading mechanism. The reading mechanism irradiates the opposing member and a medium being conveyed between the transparent member and the opposing member with light through the transparent member and receive reflected light from the opposing member and the medium. The reading mechanism includes a position adjuster to which the transparent member unit is secured and a guide to guide the transparent member unit in a direction intersecting a direction of conveyance of the medium to detachably attach the transparent member unit to the reading mechanism. The position adjuster changes a position at which the transparent member unit is secured with respect to the reading mechanism. The transparent member unit is secured to the position adjuster.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi NAKAYAMA, Susumu MIKAJIRI, Kimiharu YAMAZAKI, Tohru MATSUMOTO, Kohta AOYAGI, Hideyo MAKINO, Ryosuke EBINUMA
  • Patent number: 11126124
    Abstract: An image reading device includes a plurality of image reading units arranged at different positions in a width direction perpendicular to a conveyance direction of a recording medium to read an image on the recording medium at image reading positions and a conveyance roller pair that conveys the recording medium to the plurality of image reading units. The conveyance roller pair includes a drive roller and a driven roller that contacts the drive roller and rotates following the drive roller. The plurality of image reading units includes an upstream and a downstream image reading units downstream from the upstream image reading unit in the conveyance direction. A reading interval between the image reading positions and a diameter of the drive roller satisfy the relation: X2=n1×?×D1a, where X2 represents the reading interval, n1 represents an integer, and D1a represents the diameter of the drive roller.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: September 21, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi, Tohru Matsumoto
  • Publication number: 20210165355
    Abstract: An image reading device includes a plurality of image reading units arranged at different positions in a width direction perpendicular to a conveyance direction of a recording medium to read an image on the recording medium at image reading positions and a conveyance roller pair that conveys the recording medium to the plurality of image reading units. The conveyance roller pair includes a drive roller and a driven roller that contacts the drive roller and rotates following the drive roller. The plurality of image reading units includes an upstream and a downstream image reading units downstream from the upstream image reading unit in the conveyance direction. A reading interval between the image reading positions and a diameter of the drive roller satisfy the relation: X2=n1×?×D1a, where X2 represents the reading interval, n1 represents an integer, and D1a represents the diameter of the drive roller.
    Type: Application
    Filed: November 23, 2020
    Publication date: June 3, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi, Tohru Matsumoto
  • Publication number: 20210166096
    Abstract: A conveyance device includes a conveyance roller pair to convey a recording medium to an image reading position of an image reading unit. The conveyance roller pair includes a drive roller and a driven roller. The driven roller contacts the drive roller and rotates following the drive roller. The drive roller has a diameter satisfying a relation in which a detection mark on the recording medium is on a position away from a leading end of the recording medium by an integral multiple of a circumference of the drive roller in a conveyance direction of the recording medium.
    Type: Application
    Filed: November 24, 2020
    Publication date: June 3, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Satoshi Nakayama, Kohta Aoyagi, Hiroki Yamamura
  • Publication number: 20210168253
    Abstract: An image reading device includes a background member, an illumination unit opposed to the background member, and a reader. The illumination unit emits light to a recording medium having an image thereon. The reader receives a reflection from the recording medium to read the image. The background member has a facing surface that faces the recording medium. The facing surface includes a reference portion on a center portion in a width direction of the background member. The reference portion has a higher reflectance than an end portion of the facing surface in the width direction.
    Type: Application
    Filed: October 29, 2020
    Publication date: June 3, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi Nakayama, Susumu Mikajiri, Hideyo Makino, Yoshinari Onuma, Kimiharu Yamazaki, Kohta Aoyagi
  • Publication number: 20210088948
    Abstract: An image forming apparatus includes a plurality of temperature-influence members, a first-point temperature acquisition unit, a second-point temperature estimation unit, and a controller. The plurality of temperature-influence members have influence on a temperature of a recording medium on which an image is formed. The first-point temperature acquisition unit is configured to detect or estimate a temperature of the recording medium at a first point. The second-point temperature estimation unit is configured to estimate a temperature of the recording medium at a second point, based on a detection result of at least one of a temperature of the recording medium at a point different from the second point and a temperature of a member or atmosphere. The controller is configured to control the plurality of temperature-influence members, based on an acquisition result from the first-point temperature acquisition unit and an estimation result from the second-point temperature estimation unit.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 25, 2021
    Applicants: Ricoh Company, Ltd., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Kaori HEMMI, Koichi KATO, Kimiharu YAMAZAKI, Kazuyoshi FUSHINOBU, Shunsuke KAWASAKI, Shinichi KURAMOTO