Patents by Inventor Yoshinari Onuma

Yoshinari Onuma 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: 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
  • 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: 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
  • Patent number: 10931844
    Abstract: An image inspection apparatus includes a first outputter that outputs color information of an image to be formed on a recording medium determined according to the type of recording medium; a reader provided facing one side of the recording medium and configured to output an image signal obtained by reading the recording medium; a second outputter that outputs an edge position of the recording medium and/or the image formed on the recording medium detected based on the image signal; first background members configured to face and contact another side of the recording medium and having different heights; second background members configured to face and contact the another side of the recording medium and having different colors; and an arranger that brings one member, selected according to the recording medium type from among the first and second background members, into contact with the another side of the recording medium.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: February 23, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Aoyagi, Susumu Mikajiri, Kimiharu Yamazaki, Satoshi Nakayama, Hideyo Makino, Yoshinari Onuma
  • Publication number: 20210016584
    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: Application
    Filed: July 14, 2020
    Publication date: January 21, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohta Aoyagi, Hideyo Makino, Susumu Mikajiri, Kimiharu Yamazaki, Yoshinari Onuma, Satoshi Nakayama
  • Patent number: 10895831
    Abstract: A conveyance control device includes a fixing device including a first rotary body, a cooling device including a second rotary body, and control circuitry. The circuitry records a first drive amount for the second body when the first and second bodies are driven at a speed, a second drive amount for the second body when the second body is driven without the first body being driven, a third drive amount for the second body when the second body is driven to rotate faster than a rotating speed and the first body is driven, and a fourth drive amount for the second body when the second body is driven to rotate slower than the rotating speed and the first body is driven. The circuitry performs correction based on the drive amounts in such a manner that a drive amount of the second body becomes equivalent to the second drive amount.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: January 19, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Yoshinari Onuma, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi
  • Publication number: 20200301326
    Abstract: A conveyance control device includes a fixing device including a first rotary body, a cooling device including a second rotary body, and control circuitry. The circuitry records a first drive amount for the second body when the first and second bodies are driven at a speed, a second drive amount for the second body when the second body is driven without the first body being driven, a third drive amount for the second body when the second body is driven to rotate faster than a rotating speed and the first body is driven, and a fourth drive amount for the second body when the second body is driven to rotate slower than the rotating speed and the first body is driven. The circuitry performs correction based on the drive amounts in such a manner that a drive amount of the second body becomes equivalent to the second drive amount.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 24, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Yoshinari Onuma, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi
  • Publication number: 20200296243
    Abstract: An image inspection apparatus includes a first outputter that outputs color information of an image to be formed on a recording medium determined according to the type of recording medium; a reader provided facing one side of the recording medium and configured to output an image signal obtained by reading the recording medium; a second outputter that outputs an edge position of the recording medium and/or the image formed on the recording medium detected based on the image signal; first background members configured to face and contact another side of the recording medium and having different heights; second background members configured to face and contact the another side of the recording medium and having different colors; and an arranger that brings one member, selected according to the recording medium type from among the first and second background members, into contact with the another side of the recording medium.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohta AOYAGI, Susumu MIKAJIRI, Kimiharu YAMAZAKI, Satoshi NAKAYAMA, Hideyo MAKINO, Yoshinari ONUMA
  • Patent number: 8965257
    Abstract: An image forming apparatus includes an image carrier, a transfer unit to transfer the image onto a recording medium, a torque limit unit to transmit drive force to the transfer unit at a torque less than the torque for transmitting drive force, and drive the transfer unit to rotate at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other, and a drive unit to output drive force to drive the transfer unit such that the transfer unit rotates at a circumferential velocity lower than that of the image carrier when the image carrier and the transfer unit are separate from each other, and the transfer unit rotates at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: February 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Makoto Nakura, Shinya Tomita, Naoto Ueda, Yoshinari Onuma, Masanori Takayasu
  • Publication number: 20140140741
    Abstract: An image forming apparatus includes an image carrier, a transfer unit to transfer the image onto a recording medium, a torque limit unit to transmit drive force to the transfer unit at a torque less than the torque for transmitting drive force, and drive the transfer unit to rotate at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other, and a drive unit to output drive force to drive the transfer unit such that the transfer unit rotates at a circumferential velocity lower than that of the image carrier when the image carrier and the transfer unit are separate from each other, and the transfer unit rotates at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Inventors: Makoto NAKURA, Shinya TOMITA, Naoto UEDA, Yoshinari ONUMA, Masanori TAKAYASU
  • Patent number: 8095037
    Abstract: A corona wire cartridge includes: a reel around which a corona wire is wound; a reel holder that rotatably supports the reel; a casing having a receiving portion which receives the reel and the reel holder and a wire drawing opening through which the corona wire is drawn; and an elastic member that movably connects the casing to the reel holder.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: January 10, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshinari Onuma, Tsukasa Onose, Koji Doi, Hiroshi Kikuchi
  • Publication number: 20070248379
    Abstract: A corona wire cartridge includes: a reel around which a corona wire is wound; a reel holder that rotatably supports the reel; a casing having a receiving portion which receives the reel and the reel holder and a wire drawing opening through which the corona wire is drawn; and an elastic member that movably connects the casing to the reel holder.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 25, 2007
    Applicant: Ricoh Printing Systems, Ltd.
    Inventors: Yoshinari Onuma, Tsukasa Onose, Koji Doi, Hiroshi Kikuchi
  • Patent number: D590439
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 14, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Kikuchi, Tsukasa Onose, Koji Doi, Yoshinari Onuma