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).
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Patent number: 10365028Abstract: 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: GrantFiled: March 11, 2016Date of Patent: July 30, 2019Assignee: FUJI ELECTRIC CO., LTD.Inventor: Keisuke Kawabata
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Patent number: 9599941Abstract: 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: GrantFiled: December 24, 2014Date of Patent: March 21, 2017Assignee: Ricoh Company, Ltd.Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Keisuke Kawabata, Haruyuki Honda
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Publication number: 20160334156Abstract: 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: ApplicationFiled: March 11, 2016Publication date: November 17, 2016Inventor: Keisuke KAWABATA
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Patent number: 9310735Abstract: 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: GrantFiled: September 12, 2014Date of Patent: April 12, 2016Assignee: Ricoh Company, Ltd.Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu, Yukiko Nakajima, Keisuke Kawabata
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Patent number: 9285737Abstract: 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: GrantFiled: December 19, 2014Date of Patent: March 15, 2016Assignee: Ricoh Company, Ltd.Inventors: Yasunori Ishigaya, Kazuhito Kishi, Ippei Fujimoto, Keisuke Kawabata, Misaki Shimizu, Yoshiki Yamaguchi, Haruyuki Honda
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Patent number: 9223268Abstract: 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: GrantFiled: August 27, 2014Date of Patent: December 29, 2015Assignee: Ricoh Company, Ltd.Inventors: Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu, Yukiko Nakajima, Keisuke Kawabata, Yasunori Ishigaya, Haruyuki Honda
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Patent number: 9176440Abstract: 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: GrantFiled: July 30, 2014Date of Patent: November 3, 2015Assignee: Ricoh Company, Ltd.Inventors: Haruyuki Honda, Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Misaki Shimizu, Keisuke Kawabata
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Patent number: 9110432Abstract: 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: GrantFiled: March 20, 2014Date of Patent: August 18, 2015Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Ono, Takeshi Yamamoto, Keisuke Kawabata
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Publication number: 20150177659Abstract: 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: ApplicationFiled: December 19, 2014Publication date: June 25, 2015Applicant: Ricoh Company, Ltd.Inventors: Yasunori Ishigaya, Kazuhito Kishi, Ippei Fujimoto, Keisuke Kawabata, Misaki Shimizu, Yoshiki Yamaguchi, Haruyuki Honda
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Publication number: 20150177655Abstract: 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: ApplicationFiled: December 24, 2014Publication date: June 25, 2015Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Yasunori ISHIGAYA, Ippei FUJIMOTO, Keisuke KAWABATA, Haruyuki HONDA
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Publication number: 20150078768Abstract: 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: ApplicationFiled: September 12, 2014Publication date: March 19, 2015Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Masahiro SAMEI, Ippei FUJIMOTO, Misaki SHIMIZU, Yukiko NAKAJIMA, Keisuke KAWABATA
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Publication number: 20150071688Abstract: 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: ApplicationFiled: August 27, 2014Publication date: March 12, 2015Inventors: Yoshiki YAMAGUCHI, Kazuhito KISHI, Masahiro SAMEI, Ippei FUJIMOTO, Misaki SHIMIZU, Yukiko NAKAJIMA, Keisuke KAWABATA, Yasunori ISHIGAYA, Haruyuki HONDA
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Publication number: 20150050046Abstract: 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: ApplicationFiled: July 30, 2014Publication date: February 19, 2015Inventors: Haruyuki Honda, Yoshiki Yamaguchi, Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Misaki Shimizu, Keisuke Kawabata
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Publication number: 20140294473Abstract: 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: ApplicationFiled: March 20, 2014Publication date: October 2, 2014Inventors: Hiroshi ONO, Takeshi YAMAMOTO, Keisuke KAWABATA
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Patent number: 6771360Abstract: 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: GrantFiled: November 26, 2002Date of Patent: August 3, 2004Assignee: Hitachi Cable, Ltd.Inventor: Keisuke Kawabata
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Publication number: 20030137653Abstract: 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: ApplicationFiled: November 26, 2002Publication date: July 24, 2003Inventor: Keisuke Kawabata