Patents by Inventor Keisuke Kawabata

Keisuke Kawabata 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: 10365028
    Abstract: A vending machine includes a vending machine main body, an internal heat exchanger, an external heat exchanger made of aluminum, and a compressor. The vending machine further includes an attachment base made of a steel plate and disposed on the base such that the external heat exchanger and the compressor are provided on the attachment base, and a pair of right and left holding members made of synthetic resin and engaging with and fixing to the attachment base, each having an accommodation unit corresponding to an outer shape at two sides of a lower portion of the aluminum external heat exchanger. The pair of right and left holding members forms a gap between the aluminum external heat exchanger and the attachment base such that the two sides of the lower portion of the aluminum external heat exchanger are accommodated and held in the accommodation units.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: July 30, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Keisuke Kawabata
  • Patent number: 9599941
    Abstract: A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and including a heated face and a heater including a contact face contacting the heated face of the fixing rotator. The contact face has a Vickers hardness not greater than about 600 Hv.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: March 21, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Keisuke Kawabata, Haruyuki Honda
  • Publication number: 20160334156
    Abstract: A vending machine includes a bending machine main body, an internal heat exchanger, an external heat exchanger made of aluminum, a compressor. The vending machine further includes an attachment base made of a steel plate and disposed on the base such that the external heat exchanger and the compressor are provided on the attachment base, and a pair of right and left holding members made of synthetic resin and engaging with and fixing to the attachment base, each having an accommodation unit corresponding to an outer shape at two sides of a lower portion of the aluminum external heat exchanger. The pair of right and left holding members form a gap between the aluminum external heat exchanger and the attachment base such that the two sides of the lower portion of the aluminum external heat exchanger are accommodated and held in the accommodation units.
    Type: Application
    Filed: March 11, 2016
    Publication date: November 17, 2016
    Inventor: Keisuke KAWABATA
  • Patent number: 9310735
    Abstract: A fixing device includes a fixing rotator formed into a loop and rotatable in a predetermined direction of rotation and a pressure rotator disposed outside the loop formed by the fixing rotator and pressed against the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A stay is disposed opposite the pressure rotator via the fixing rotator. A heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A pressurization member is pressed against the heater via the fixing rotator. A housing is interposed between the stay and the heater. A temperature detector is mounted on the housing to detect a temperature of the heater.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: April 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu, Yukiko Nakajima, Keisuke Kawabata
  • Patent number: 9285737
    Abstract: A fixing device includes a fixing rotator and a pressure rotator contacting the fixing rotator to form a fixing nip therebetween, through which recording media of a plurality of sizes are conveyed. The recording media create a plurality of non-conveyance spans on a lateral end of the fixing rotator in an axial direction thereof where the recording media are not conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A multi-view thermopile array is disposed opposite an outer circumferential surface of the lateral end of the fixing rotator in the axial direction thereof and angled relative to the fixing rotator to detect a temperature of the fixing rotator. The thermopile array includes an inboard temperature detection element directed to a conveyance span on the fixing rotator where the recording medium of a decreased size is conveyed.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 15, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasunori Ishigaya, Kazuhito Kishi, Ippei Fujimoto, Keisuke Kawabata, Misaki Shimizu, Yoshiki Yamaguchi, Haruyuki Honda
  • Patent number: 9223268
    Abstract: A fixing device includes a first support and a second support to rotatably support a fixing rotator at a first lateral end and a second lateral end of the fixing rotator in an axial direction thereof. A first stopper is mounted on the first support. A second stopper is mounted on the second support. A first skew restraint projects from an outer circumferential surface of the fixing rotator radially at the first lateral end of the fixing rotator in the axial direction thereof. A second skew restraint projects from the outer circumferential surface of the fixing rotator radially at the second lateral end of the fixing rotator in the axial direction thereof. The second skew restraint comes into contact with the second stopper as the fixing rotator moves in the axial direction thereof toward the first support.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: December 29, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu, Yukiko Nakajima, Keisuke Kawabata, Yasunori Ishigaya, Haruyuki Honda
  • Patent number: 9176440
    Abstract: A fixing device includes a fixing rotator and an abutment rotator contacting the fixing rotator to form a fixing nip therebetween through which a recording medium is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A thermopile array is disposed opposite an outer circumferential surface of the fixing rotator to detect a temperature of the outer circumferential surface of the fixing rotator. The thermopile array is tilted with respect to the outer circumferential surface of the fixing rotator to cause a bisector dividing a view angle of the thermopile array in an axial direction of the fixing rotator into two equal parts and a rotation axis of the fixing rotator to define an outboard angle and an inboard angle disposed inboard from the outboard angle in the axial direction of the fixing rotator and different from the outboard angle.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: November 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Haruyuki Honda, Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Misaki Shimizu, Keisuke Kawabata
  • Patent number: 9110432
    Abstract: An image forming apparatus includes a fixing unit and a cleaning unit. The fixing unit includes multiple local heaters configured to separately heat multiple portions of a recording medium carrying toner to fix the toner on the recording medium. The cleaning unit removes unfixed toner adhering to the recording medium after the fixing of the toner performed by the fixing unit.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: August 18, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Ono, Takeshi Yamamoto, Keisuke Kawabata
  • Publication number: 20150177659
    Abstract: A fixing device includes a fixing rotator and a pressure rotator contacting the fixing rotator to form a fixing nip therebetween, through which recording media of a plurality of sizes are conveyed. The recording media create a plurality of non-conveyance spans on a lateral end of the fixing rotator in an axial direction thereof where the recording media are not conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A multi-view thermopile array is disposed opposite an outer circumferential surface of the lateral end of the fixing rotator in the axial direction thereof and angled relative to the fixing rotator to detect a temperature of the fixing rotator. The thermopile array includes an inboard temperature detection element directed to a conveyance span on the fixing rotator where the recording medium of a decreased size is conveyed.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 25, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasunori Ishigaya, Kazuhito Kishi, Ippei Fujimoto, Keisuke Kawabata, Misaki Shimizu, Yoshiki Yamaguchi, Haruyuki Honda
  • Publication number: 20150177655
    Abstract: A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and including a heated face and a heater including a contact face contacting the heated face of the fixing rotator. The contact face has a Vickers hardness not greater than about 600 Hv.
    Type: Application
    Filed: December 24, 2014
    Publication date: June 25, 2015
    Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Yasunori ISHIGAYA, Ippei FUJIMOTO, Keisuke KAWABATA, Haruyuki HONDA
  • Publication number: 20150078768
    Abstract: A fixing device includes a fixing rotator formed into a loop and rotatable in a predetermined direction of rotation and a pressure rotator disposed outside the loop formed by the fixing rotator and pressed against the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A stay is disposed opposite the pressure rotator via the fixing rotator. A heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A pressurization member is pressed against the heater via the fixing rotator. A housing is interposed between the stay and the heater. A temperature detector is mounted on the housing to detect a temperature of the heater.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 19, 2015
    Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Masahiro SAMEI, Ippei FUJIMOTO, Misaki SHIMIZU, Yukiko NAKAJIMA, Keisuke KAWABATA
  • Publication number: 20150071688
    Abstract: A fixing device includes a first support and a second support to rotatably support a fixing rotator at a first lateral end and a second lateral end of the fixing rotator in an axial direction thereof. A first stopper is mounted on the first support. A second stopper is mounted on the second support. A first skew restraint projects from an outer circumferential surface of the fixing rotator radially at the first lateral end of the fixing rotator in the axial direction thereof. A second skew restraint projects from the outer circumferential surface of the fixing rotator radially at the second lateral end of the fixing rotator in the axial direction thereof. The second skew restraint comes into contact with the second stopper as the fixing rotator moves in the axial direction thereof toward the first support.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 12, 2015
    Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Masahiro SAMEI, Ippei FUJIMOTO, Misaki SHIMIZU, Yukiko NAKAJIMA, Keisuke KAWABATA, Yasunori ISHIGAYA, Haruyuki HONDA
  • Publication number: 20150050046
    Abstract: A fixing device includes a fixing rotator and an abutment rotator contacting the fixing rotator to form a fixing nip therebetween through which a recording medium is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A thermopile array is disposed opposite an outer circumferential surface of the fixing rotator to detect a temperature of the outer circumferential surface of the fixing rotator. The thermopile array is tilted with respect to the outer circumferential surface of the fixing rotator to cause a bisector dividing a view angle of the thermopile array in an axial direction of the fixing rotator into two equal parts and a rotation axis of the fixing rotator to define an outboard angle and an inboard angle disposed inboard from the outboard angle in the axial direction of the fixing rotator and different from the outboard angle.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 19, 2015
    Inventors: Haruyuki Honda, Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Misaki Shimizu, Keisuke Kawabata
  • Publication number: 20140294473
    Abstract: An image forming apparatus includes a fixing unit and a cleaning unit. The fixing unit includes multiple local heaters configured to separately heat multiple portions of a recording medium carrying toner to fix the toner on the recording medium. The cleaning unit removes unfixed toner adhering to the recording medium after the fixing of the toner performed by the fixing unit.
    Type: Application
    Filed: March 20, 2014
    Publication date: October 2, 2014
    Inventors: Hiroshi ONO, Takeshi YAMAMOTO, Keisuke KAWABATA
  • Patent number: 6771360
    Abstract: A method and an apparatus for measuring wavelength dispersion value and/or nonlinear coefficient of optical fibers which realize high accurate nonlinear coefficient and wavelength dispersion value without influence of emitting power at measurement, length of test optical fiber, wavelength spacing of light source, and varying wavelength dispersion value of light source are provided.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: August 3, 2004
    Assignee: Hitachi Cable, Ltd.
    Inventor: Keisuke Kawabata
  • Publication number: 20030137653
    Abstract: A method and an apparatus for measuring wavelength dispersion value and/or nonlinear coefficient of optical fibers which realize high accurate nonlinear coefficient and wavelength dispersion value without influence of emitting power at measurement, length of test optical fiber, wavelength spacing of light source, and varying wavelength dispersion value of light source are provided.
    Type: Application
    Filed: November 26, 2002
    Publication date: July 24, 2003
    Inventor: Keisuke Kawabata