Patents by Inventor Kentaro UJI

Kentaro UJI 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: 10712705
    Abstract: An image forming apparatus includes an exterior housing, an image forming unit in the exterior housing, the image forming unit, to form an image on a sheet, a scanner to read the image on a document, a first region in the exterior housing, the image forming unit being disposed in the first region in view from a front side of the exterior housing, a second region arranged side by side with the first region in a lateral direction in the exterior housing in view from the front side of the exterior housing, the scanner being disposed in the second region, and an opening defining a space in a front face of the exterior housing. The opening extends across the first region and the second region in a lower part of the exterior housing below the image forming unit and the scanner.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: July 14, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masahiro Ishida, Yuki Sato, Ryuta Kaneda, Kentaro Uji
  • Publication number: 20200171866
    Abstract: An image forming apparatus includes an image forming device configured to form an image on a sheet, and a cabinet configured to house the image forming device. The image forming device includes a side plate in which an exhaust port is formed, and the cabinet includes an outer side plate facing the side plate of the image forming device, and a positioning part configured to position the image forming device in the cabinet, the positioning part configured to form a space between the side plate of the image forming device and the outer side plate of the cabinet.
    Type: Application
    Filed: November 14, 2019
    Publication date: June 4, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro ISHIDA, Ryuta Kaneda, Kentaro Uji
  • Publication number: 20190361385
    Abstract: An image forming apparatus includes an exterior housing, an image forming unit in the exterior housing, the image forming unit, to form an image on a sheet, a scanner to read the image on a document, a first region in the exterior housing, the image forming unit being disposed in the first region in view from a front side of the exterior housing, a second region arranged side by side with the first region in a lateral direction in the exterior housing in view from the front side of the exterior housing, the scanner being disposed in the second region, and an opening defining a space in a front face of the exterior housing. The opening extends across the first region and the second region in a lower part of the exterior housing below the image forming unit and the scanner.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 28, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro ISHIDA, Yuki SATO, Ryuta KANEDA, Kentaro UJI
  • Patent number: 10268143
    Abstract: A drive device, which is included in an image forming apparatus, includes a drive source, a drive switching device configured to switch between a transmission state and a halting state, a first rotary body having a rotary shaft, a first drive transmission passage through which a driving force is transmitted to the first rotary body, a second rotary body, a second drive transmission passage through which the driving force is transmitted to the second rotary body, a drive transmission body rotatably mounted on the rotary shaft of the first rotary body, and an input drive transmission body mounted on the rotary shaft of the first rotary body and configured to input the driving force to the rotary shaft of the first rotary body, the input drive transmission body configured to rotate together with the drive transmission body as a single unit.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 23, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kimihiro Tanaka, Kenji Tomita, Yohei Miura, Kentaro Uji
  • Publication number: 20180181030
    Abstract: A drive device, which is included in an image forming apparatus, includes a drive source, a drive switching device configured to switch between a transmission state and a halting state, a first rotary body having a rotary shaft, a first drive transmission passage through which a driving force is transmitted to the first rotary body, a second rotary body, a second drive transmission passage through which the driving force is transmitted to the second rotary body, a drive transmission body rotatably mounted on the rotary shaft of the first rotary body, and an input drive transmission body mounted on the rotary shaft of the first rotary body and configured to input the driving force to the rotary shaft of the first rotary body, the input drive transmission body configured to rotate together with the drive transmission body as a single unit.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 28, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Kimihiro TANAKA, Kenji TOMITA, Yohei MIURA, Kentaro UJI
  • Patent number: 9977393
    Abstract: A drive transmission device includes a first rotary body coupled to a drive source, a second rotary body that receives a drive force transmitted from the drive source, a coupling that couples the first rotary body and the second rotary body, and a spring that presses the coupling toward the second rotary body. Each of the first rotary body and the second rotary body includes a plurality of grooves. The coupling has axially opposed first end and second end coupled to the first rotary body and the second rotary body, respectively. The coupling includes a plurality of couplers on a circumferential surface of each of the first end and the second end. The plurality of couplers are axially movable into and out of the plurality of grooves of each of the first rotary body and the second rotary body. The coupling has a spherical end face at the second end.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: May 22, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kenji Tomita, Kentaro Uji
  • Patent number: 9880508
    Abstract: A drive transmission device includes a first rotary body coupled to a drive source, a second rotary body that receives a drive force transmitted from the drive source, a coupling that couples the first rotary body and the second rotary body, and a spring that presses the coupling toward the second rotary body. Each of the first rotary body and the second rotary body includes a plurality of grooves. The coupling has axially opposed first end and second end coupled to the first rotary body and the second rotary body, respectively. The coupling includes a plurality of couplers on a circumferential surface of each of the first end and the second end. The plurality of couplers are axially movable into and out of the plurality of grooves of each of the first rotary body and the second rotary body. The coupling has a spherical end face at the second end.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: January 30, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kenji Tomita, Kentaro Uji
  • Publication number: 20170371291
    Abstract: A drive transmission device includes a first rotary body coupled to a drive source, a second rotary body that receives a drive force transmitted from the drive source, a coupling that couples the first rotary body and the second rotary body, and a spring that presses the coupling toward the second rotary body. Each of the first rotary body and the second rotary body includes a plurality of grooves. The coupling has axially opposed first end and second end coupled to the first rotary body and the second rotary body, respectively. The coupling includes a plurality of couplers on a circumferential surface of each of the first end and the second end. The plurality of couplers are axially movable into and out of the plurality of grooves of each of the first rotary body and the second rotary body. The coupling has a spherical end face at the second end.
    Type: Application
    Filed: September 12, 2017
    Publication date: December 28, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Kenji TOMITA, Kentaro UJI
  • Publication number: 20160378049
    Abstract: A drive transmission device includes a first rotary body coupled to a drive source, a second rotary body that receives a drive force transmitted from the drive source, a coupling that couples the first rotary body and the second rotary body, and a spring that presses the coupling toward the second rotary body. Each of the first rotary body and the second rotary body includes a plurality of grooves. The coupling has axially opposed first end and second end coupled to the first rotary body and the second rotary body, respectively. The coupling includes a plurality of couplers on a circumferential surface of each of the first end and the second end. The plurality of couplers are axially movable into and out of the plurality of grooves of each of the first rotary body and the second rotary body. The coupling has a spherical end face at the second end.
    Type: Application
    Filed: June 13, 2016
    Publication date: December 29, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Kenji TOMITA, Kentaro UJI