Patents by Inventor Tomohiro Kondo

Tomohiro Kondo 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: 9459571
    Abstract: A fixing device includes a heating element disposed inside a flexible fusing member, a nip member disposed to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member, a reflecting plate for reflecting radiant heat from the heating element toward the nip member, and a backup member for nipping the flexible fusing member with the nip member. The reflecting plate includes a central reflecting portion extending along a longitudinal direction of the heating element at least in a region corresponding to along a heat generating portion of the heating element, and end reflecting portions stationarily provided on both ends of the central reflecting portion. The end reflecting portions are disposed in positions longitudinally outward of the heat generating portion and each has a reflecting surface tilted with respect to the longitudinal direction of the heating element.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: October 4, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomohiro Kondo, Yasushi Fujiwara, Kei Ishida, Noboru Suzuki, Takuji Matsuno
  • Publication number: 20160238970
    Abstract: A fixing device for thermally fixing a developer image transferred onto a recording sheet, includes: a flexible fusing member which is flexibly deformable; a heating element; a nip member disposed in such a manner as to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member; a reflecting plate configured to reflect radiant heat from the heating element in a direction toward the nip member; a backup member configured to nip the flexible fusing member with the nip member to thereby form a nip portion for the recording sheet between the flexible fusing member and the backup member; and a stay configured to support both end portions of the nip member. The reflecting plate has at least one flange portion, and the flange portion is held and supported between the nip member and the stay.
    Type: Application
    Filed: April 25, 2016
    Publication date: August 18, 2016
    Inventors: Yoshihiro Miyauchi, Yasushi Fujiwara, Takuji Matsuno, Kei Ishida, Noboru Suzuki, Tomohiro Kondo
  • Patent number: 9405247
    Abstract: A fixing device includes a heater, a first endless belt, a first back up member, and a second back up member. The first endless belt provides a nip region upon contacting with the heater, and is movable in a first direction. The first back up member provides a first position where the first back up member nips the first endless belt in cooperation with the heater. The first endless belt and the heater provide a first contact pressure at the first position. The second back up member is positioned downstream of the first back up member in the first direction, and provides a second position where the second back up member nips the first endless belt in cooperation with the heater. The first endless belt and the heater provide a second contact pressure at the second position; the first contact pressure is higher than the second contact pressure.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: August 2, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiro Kondo
  • Patent number: 9400459
    Abstract: There is provided a fixing device for thermally fixing a developing agent image to a sheet. The fixing device includes a tubular flexible member, a heater, a nip member, a reflection plate, a backup member, a stay and a temperature sensor. The flexible member has an inner peripheral surface defining an internal space. The heater is disposed in the internal space and is configured to generate a radiant heat. The nip member is disposed in the internal space, the inner peripheral surface being in sliding contact with the nip member. The reflection plate is configured to reflect the radiant heat from the heater toward the nip member, the reflection plate having an outer profile. The backup member is configured to provide a nip region in cooperation with the nip member for nipping the flexible member between the backup member and the nip member.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: July 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Miyauchi, Yasushi Fujiwara, Noboru Suzuki, Kei Ishida, Tomohiro Kondo
  • Patent number: 9323184
    Abstract: A fixing device for thermally fixing a developer image transferred onto a recording sheet, includes: a flexible fusing member which is flexibly deformable; a heating element; a nip member disposed in such a manner as to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member; a reflecting plate configured to reflect radiant heat from the heating element in a direction toward the nip member; a backup member configured to nip the flexible fusing member with the nip member to thereby form a nip portion for the recording sheet between the flexible fusing member and the backup member; and a stay configured to support both end portions of the nip member. The reflecting plate has at least one flange portion, and the flange portion is held and supported between the nip member and the stay.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: April 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Miyauchi, Yasushi Fujiwara, Takuji Matsuno, Kei Ishida, Noboru Suzuki, Tomohiro Kondo
  • Patent number: 9323190
    Abstract: In a fixing device for thermally fixing a developer image transferred onto a recording sheet, a nip plate is disposed on an inner surface of a tubular flexible fusing member which is flexibly deformable in such a manner that permits the fusing member to slide along the nip plate, and configured to be heated by a heating element disposed inside the fusing member. The fusing member is nipped between the nip plate and a backup member to form a nip portion between the fusing member and the backup member. The nip plate is bent to form a recessed portion which opens on the inner surface of the fusing member and holds a lubricant.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Fujiwara, Kei Ishida, Noboru Suzuki, Yoshihiro Miyauchi, Tomohiro Kondo
  • Patent number: 9323187
    Abstract: A fixing device includes an endless belt extending in a first direction and configured to rotate, a heater extending inside the endless belt in the first direction and configured to heat the endless belt, a first temperature sensor for detecting a temperature of the endless belt heated by the heater, the first temperature sensor being disposed inside the endless belt, a second temperature sensor for detecting a temperature of the endless belt heated by the heater, the second temperature sensor being disposed outside of the endless belt, and a thermal cutoff disposed outside of the endless belt and configured to interrupt electric current to the heater when the temperature of the endless belt exceeds a specified temperature.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiro Kondo
  • Publication number: 20160085190
    Abstract: A fixing device includes a tubular fusing film, a heater, a nip member, a backup member, a backup member, first supporting member, and a second supporting member. The heater may be disposed inside the tubular shape of the fusing film. The nip member may be disposed so as to be in sliding contact with the inner surface of the fusing film and heated by the heater. The backup member may form a nip portion between the backup member and the fusing film with the fusing film between the backup member and the nip member. The first supporting member may be configured to integrally support the heater and the nip member. The second supporting member may be configured to movably support the first supporting member so that the nip member moves relative to the backup member.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 24, 2016
    Inventors: Yasushi Fujiwara, Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo
  • Patent number: 9274472
    Abstract: A fixing device for thermally fixing an image to a sheet includes: a tubular flexible member; a nip member; a heater; a reflection member; a backup member; and a temperature sensor. The tubular flexible member has an inner peripheral surface defining an internal space. The nip member is disposed in the internal space and has a surface and an opposite surface. The heater is disposed in the internal space confronting the nip member. The reflection member is configured to reflect radiant heat from the heater toward the nip member. The backup member may provide a nip region with the nip member for nipping the tubular flexible member between the backup member and the nip member. The temperature sensor is disposed in the internal space and is configured to detect a temperature of the nip member. The temperature sensor is positioned outside of the reflection member and confronting the opposite surface.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 1, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Yasushi Fujiwara, Noboru Suzuki, Yoshihiro Miyauchi, Tomohiro Kondo
  • Patent number: 9268274
    Abstract: There is provided a fixing device that may include: an endless belt having an inner peripheral surface defining an internal space and configured to circularly move about a first axis extending in an axial direction; a heater and a nip plate extending through the internal space; a rotary body; a restricting member and a biasing member. The rotary body and the nip member may nip the endless belt therebetween. The restricting member may restrict displacement of the endless belt in the axial direction, the restricting member having a restricting surface configured to oppose an axial end face of the endless belt in the axial direction. The biasing member may bias the restricting member toward the axial end face of the endless belt.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: February 23, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiro Kondo
  • Publication number: 20160033909
    Abstract: A fixing device includes a heating element disposed inside a flexible fusing member, a nip member disposed to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member, a reflecting plate for reflecting radiant heat from the heating element toward the nip member, and a backup member for nipping the flexible fusing member with the nip member. The reflecting plate includes a central reflecting portion extending along a longitudinal direction of the heating element at least in a region corresponding to along a heat generating portion of the heating element, and end reflecting portions stationarily provided on both ends of the central reflecting portion. The end reflecting portions are disposed in positions longitudinally outward of the heat generating portion and each has a reflecting surface tilted with respect to the longitudinal direction of the heating element.
    Type: Application
    Filed: October 12, 2015
    Publication date: February 4, 2016
    Inventors: Tomohiro Kondo, Yasushi Fujiwara, Kei Ishida, Noboru Suzuki, Takuji Matsuno
  • Patent number: 9244409
    Abstract: A fixing device includes: a tubular endless belt, a heater, a nip member, an elastic layer and a backup member. The endless belt has an inner peripheral surface defining an internal space and is configured to circularly move in a moving direction. The heater is disposed in the internal space and is configured to generate radiant heat. The nip member is disposed in the internal space and spaced away from the heater. The elastic layer is fixed on the nip member and positioned between the nip member and the inner peripheral surface of the endless belt. The backup member and the nip member are configured to nip the tubular endless belt therebetween to provide a nip region between the backup member and the nip member.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: January 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiro Kondo
  • Patent number: 9158243
    Abstract: A fixing device includes a heating element disposed inside a flexible fusing member, a nip member disposed to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member, a reflecting plate for reflecting radiant heat from the heating element toward the nip member, and a backup member for nipping the flexible fusing member with the nip member. The reflecting plate includes a central reflecting portion extending along a longitudinal direction of the heating element at least in a region corresponding to along a heat generating portion of the heating element, and end reflecting portions stationarily provided on both ends of the central reflecting portion. The end reflecting portions are disposed in positions longitudinally outward of the heat generating portion and each has a reflecting surface tilted with respect to the longitudinal direction of the heating element.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: October 13, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomohiro Kondo, Yasushi Fujiwara, Kei Ishida, Noboru Suzuki, Takuji Matsuno
  • Publication number: 20150277306
    Abstract: A fixing device includes an endless belt extending in a first direction and configured to rotate, a heater extending inside the endless belt in the first direction and configured to heat the endless belt, a first temperature sensor for detecting a temperature of the endless belt heated by the heater, the first temperature sensor being disposed inside the endless belt, a second temperature sensor for detecting a temperature of the endless belt heated by the heater, the second temperature sensor being disposed outside of the endless belt, and a thermal cutoff disposed outside of the endless belt and configured to interrupt electric current to the heater when the temperature of the endless belt exceeds a specified temperature.
    Type: Application
    Filed: March 24, 2015
    Publication date: October 1, 2015
    Inventor: Tomohiro Kondo
  • Patent number: 9146510
    Abstract: A fixing device includes a tubular fusing film, a heater, a nip member, a backup member, a backup member, first supporting member, and a second supporting member. The heater may be disposed inside the tubular shape of the fusing film. The nip member may be disposed so as to be in sliding contact with the inner surface of the fusing film and heated by the heater. The backup member may form a nip portion between the backup member and the fusing film with the fusing film between the backup member and the nip member. The first supporting member may be configured to integrally support the heater and the nip member. The second supporting member may be configured to movably support the first supporting member so that the nip member moves relative to the backup member.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: September 29, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Fujiwara, Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo
  • Patent number: 9069309
    Abstract: A fixing device that includes a heater, a first endless belt, a first roller, and a second roller is provided. The first endless belt confronts the heater at a confronting part and providing a nip region upon contacting the heater. The first endless belt is movable in a first direction at the confronting part, and has an inner peripheral surface. The first roller supports the inner peripheral surface, and nips the first endless belt in cooperation with the heater. The nip region has a part facing the first roller. The second roller is disposed downstream of the nip region in the first direction and supports the inner peripheral surface. The second roller is positioned such that a part of the endless belt mounted over the second roller is out of contact from the heater.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: June 30, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiro Kondo
  • Publication number: 20150093165
    Abstract: A fixing device includes: a tubular endless belt, a heater, a nip member, an elastic layer and a backup member. The endless belt has an inner peripheral surface defining an internal space and is configured to circularly move in a moving direction. The heater is disposed in the internal space and is configured to generate radiant heat. The nip member is disposed in the internal space and spaced away from the heater. The elastic layer is fixed on the nip member and positioned between the nip member and the inner peripheral surface of the endless belt. The backup member and the nip member are configured to nip the tubular endless belt therebetween to provide a nip region between the backup member and the nip member.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventor: Tomohiro Kondo
  • Patent number: 8983350
    Abstract: A fixing device for thermally fixing a developing agent image to a sheet fed in a sheet feeding direction includes a tubular flexible fusing member, a nip plate, a heater, a reflection plate, and a backup member. The tubular flexible fusing member has an inner peripheral surface defining an internal space and an axis defining an axial direction. The nip plate is disposed in the internal space, and the inner peripheral surface is in sliding contact with the nip plate. A heater is disposed in the internal space and confronts the nip plate in a confronting direction. The reflection plate is configured to reflect a radiant heat from the heater toward the nip plate. A backup member is configured to provide a nip region in cooperation with the nip plate for nipping the fusing member between the backup member and the nip plate.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 17, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo, Tsuneo Fujiwara, Etsuko Fujiwara
  • Patent number: 8983349
    Abstract: A fixing device for thermally fixing a developing agent image to a sheet includes a tubular member, a nip plate, a heater, a reflection plate, and a backup member. The tubular member has an inner peripheral surface defining an internal space and an axis defining an axial direction. The nip plate is disposed in the internal space, and the inner peripheral surface is in sliding contact with the nip plate. A heater is disposed in the internal space and confronts the nip plate in a confronting direction. The reflection plate is configured to reflect radiant heat from the heater toward the nip plate. A backup member is configured to provide a nip region in cooperation with the nip plate for nipping the fusing member between the backup member and the nip plate.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 17, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo, Tsuneo Fujiwara, Etsuko Fujiwara
  • Patent number: 8942610
    Abstract: A fixing device for thermally fixing a developing agent image to a sheet includes a tubular member, a nip plate, a heater, a reflection plate, and a backup member. The tubular member has an inner peripheral surface defining an internal space and an axis defining an axial direction. The nip plate is disposed in the internal space, and the inner peripheral surface is in sliding contact with the nip plate. A heater is disposed in the internal space and confronts the nip plate in a confronting direction. The reflection plate is configured to reflect radiant heat from the heater toward the nip plate. A backup member is configured to provide a nip region in cooperation with the nip plate for nipping the fusing member between the backup member and the nip plate.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: January 27, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo, Tsuneo Fujiwara, Etsuko Fujiwara