Patents by Inventor Yoshiharu Kanematsu

Yoshiharu Kanematsu 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: 10061241
    Abstract: A fixing device includes a rotatable cylindrical heating roller, a heat source and a pressing roller. The heat source is arranged in a hollow inner space of the heating roller. The pressing roller is pressed against the heating roller to form a fixing nip through which a sheet is passed in a sheet passing direction. The heating roller has a substrate layer and a heat conductive layer. The substrate layer is formed such that both end portions in a width direction perpendicular to the sheet passing direction are made thinner than a center portion in the width direction, within a sheet passing area through which the sheet is passed. The heat conductive layer is provided around an outer circumferential face of the substrate layer and has a heat conductivity higher than the substrate layer.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: August 28, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yoshiharu Kanematsu
  • Publication number: 20180113406
    Abstract: A fixing device includes a rotatable cylindrical heating roller, a heat source and a pressing roller. The heat source is arranged in a hollow inner space of the heating roller. The pressing roller is pressed against the heating roller to form a fixing nip through which a sheet is passed in a sheet passing direction. The heating roller has a substrate layer and a heat conductive layer. The substrate layer is formed such that both end portions in a width direction perpendicular to the sheet passing direction are made thinner than a center portion in the width direction, within a sheet passing area through which the sheet is passed. The heat conductive layer is provided around an outer circumferential face of the substrate layer and has a heat conductivity higher than the substrate layer.
    Type: Application
    Filed: August 30, 2017
    Publication date: April 26, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Yoshiharu KANEMATSU
  • Patent number: 9851664
    Abstract: A fixing device includes a cylindrical heat roller, a heating element, a pressure roller, and an auxiliary roller. The heating element is provided inside the heat roller and configured to apply heat to the heat roller. The pressure roller is configured to be pressed against the heat roller to form, with the heat roller, a nip area where a recording paper sheet is to be nipped. The auxiliary roller is provided inside the heat roller and configured to be pressed toward the pressure roller with a peripheral wall of the heat roller in between. An outer peripheral surface of the auxiliary roller pressed against an inner peripheral surface of the heat roller is formed into an inverted crown shape so that an outside diameter of the auxiliary roller gradually decreases from both axial ends of the auxiliary roller toward an axial center thereof.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: December 26, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshiharu Kanematsu, Eriko Hayashi
  • Patent number: 9639044
    Abstract: A fixing device includes a housing, a belt member, a pressure roller, a nip forming member, and a pressing member. The belt member is constituted of a flexible tubular shape. The nip forming member is located at an inner peripheral portion of the belt member. The nip forming member has an opposed surface along an outer peripheral surface of the pressure roller. The nip forming member presses the belt member to the pressure roller. An end portion of the outer peripheral surface of the pressure roller is located inside with respect to an end portion of the belt member. The fixing device includes a pressing member located opposed to the pressure roller in the axial direction. The pressing member presses an outer peripheral surface of the end portion of the belt member in the axial direction to radially inward of the belt member.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 2, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Eriko Hayashi, Yoshiharu Kanematsu
  • Publication number: 20160363896
    Abstract: A fixing device includes a housing, a belt member, a pressure roller, a nip forming member, and a pressing member. The belt member is constituted of a flexible tubular shape. The nip forming member is located at an inner peripheral portion of the belt member. The nip forming member has an opposed surface along an outer peripheral surface of the pressure roller. The nip forming member presses the belt member to the pressure roller. An end portion of the outer peripheral surface of the pressure roller is located inside with respect to an end portion of the belt member. The fixing device includes a pressing member located opposed to the pressure roller in the axial direction. The pressing member presses an outer peripheral surface of the end portion of the belt member in the axial direction to radially inward of the belt member.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 15, 2016
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Eriko HAYASHI, Yoshiharu KANEMATSU
  • Publication number: 20160363893
    Abstract: A fixing device includes a cylindrical heat roller, a heating element, a pressure roller, and an auxiliary roller. The heating element is provided inside the heat roller and configured to apply heat to the heat roller. The pressure roller is configured to be pressed against the heat roller to form, with the heat roller, a nip area where a recording paper sheet is to be nipped. The auxiliary roller is provided inside the heat roller and configured to be pressed toward the pressure roller with a peripheral wall of the heat roller in between. An outer peripheral surface of the auxiliary roller pressed against an inner peripheral surface of the heat roller is formed into an inverted crown shape so that an outside diameter of the auxiliary roller gradually decreases from both axial ends of the auxiliary roller toward an axial center thereof.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 15, 2016
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yoshiharu KANEMATSU, Eriko HAYASHI
  • Patent number: 9454115
    Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source and a reflecting member. The fixing belt is arranged rotatably around a rotation axis. The reflecting member reflects the radiant heat radiated from the heat source. The fixing belt has a passing region and a non-passing region. Through the passing region, a recording medium passes. The non-passing region is arranged outside the passing region in a direction of the rotation axis. The reflecting member has a first reflecting part and a second reflecting part. The first reflecting part is arranged at an inner circumferential side of the passing region. The second reflecting part is arranged at an inner circumferential side of the non-passing region. Roughness of a face at the heat source side of the second reflecting part is larger than roughness of a face at the heat source side of the first reflecting part.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: September 27, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Takefumi Yotsutsuji, Yoshiharu Kanematsu, Yoshihiro Yamagishi, Takashi Eiki, Eriko Hayashi, Hironori Takahashi
  • Patent number: 9423728
    Abstract: A fixing device according to the present invention includes a fixing belt (22), a pressuring member (23), a heat source (24), a reflecting member (25) reflecting the radiant heat radiated from the heat source (24) to an inner circumference face of the fixing belt (22), a pressing member (27) pressing the fixing belt (22) to a side of the pressuring member (23) and a supporting member (26) supporting the pressing member (27). The reflecting member (25) is arranged between the heat source (24) and the supporting member (26) and configured to be curved or bent so as to project toward a side of the heat source (24). Straight lines (L) connecting a center (Z) of the heat source (24) with both end parts of the supporting member (26) in a conveying direction of a recording medium pass through the reflecting member (25).
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: August 23, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshihiro Yamagishi, Yoshiharu Kanematsu
  • Publication number: 20160147184
    Abstract: A fixing device according to the present invention includes a fixing belt (22), a pressuring member (23) coming into pressure contact with the fixing belt (22) so as to form a fixing nip (52), a heat source (24) arranged at an inside of the fixing belt (22) and a reflecting member (25) reflecting the radiant heat radiated from the heat source (24). The reflecting member (25) includes a first reflecting part (61) inclining to a side of the fixing nip (52) toward an upstream side in a conveying direction of a recording medium and a second reflecting part (62) arranged at a more downstream side than the first reflecting part (61) in the conveying direction and at a further side from the fixing nip (52) than the first reflecting part (61) and covering a downstream side of the heat source (24) in the conveying direction.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 26, 2016
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yoshihiro YAMAGISHI, Yoshiharu KANEMATSU
  • Publication number: 20160132001
    Abstract: A fixing device according to the present invention includes a fixing belt (22), a pressuring member (23), a heat source (24), a reflecting member (25) reflecting the radiant heat radiated from the heat source (24) to an inner circumference face of the fixing belt (22), a pressing member (27) pressing the fixing belt (22) to a side of the pressuring member (23) and a supporting member (26) supporting the pressing member (27). The reflecting member (25) is arranged between the heat source (24) and the supporting member (26) and configured to be curved or bent so as to project toward a side of the heat source (24). Straight lines (L) connecting a center (Z) of the heat source (24) with both end parts of the supporting member (26) in a conveying direction of a recording medium pass through the reflecting member (25).
    Type: Application
    Filed: January 21, 2015
    Publication date: May 12, 2016
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yoshihiro YAMAGISHI, Yoshiharu KANEMATSU
  • Patent number: 9335691
    Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member and a temperature sensor. The fixing belt is arranged rotatably. The pressuring member is arranged rotatably and configured to come into pressure contact with the fixing belt so as to form a fixing nip. The pressing member is configured to press the fixing belt to the pressuring member side. The temperature sensor is inserted into the pressing member. The pressing member has a through hole penetrating from a face at the fixing nip side to an insertion part of the temperature sensor.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: May 10, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshihiro Yamagishi, Yoshiharu Kanematsu, Takashi Eiki, Hironori Takahashi, Takefumi Yotsutsuji, Eriko Hayashi
  • Patent number: 9329543
    Abstract: A fixing device includes a fixing belt, a pressuring member, a heating member, a pressing member and a supporting member. The heating member is arranged rotatably around a rotation axis and configured such that the fixing belt is sandwiched between the heating member and the pressuring member. The pressing member is configured to press the fixing belt to a side of the pressuring member and configured such that the fixing belt is sandwiched between the pressing member and the pressuring member. The supporting member has a supporting face configured to come into contact with the inner circumference face of the fixing belt. The supporting face is inclined toward inside in a radial direction of the fixing belt from both end sides to a center side of the fixing belt in the rotation axis direction.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: May 3, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshiharu Kanematsu, Yoshihiro Yamagishi
  • Patent number: 9229393
    Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member and a sheet member. The fixing belt is arranged rotatably and configured to extend along an axis direction. The pressuring member is arranged rotatably and configured to come into pressure contact with the fixing belt so as to form a fixing nip. The pressing member is configured to press the fixing belt to a side of the pressuring member and configured such that the fixing belt is interposed between the pressing member and the pressuring member. The sheet member is formed in a tubular shape and provided around the pressing member and configured to rotate with rotation of the fixing belt.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: January 5, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshiharu Kanematsu, Yoshihiro Yamagishi, Takashi Eiki, Takefumi Yotsutsuji, Eriko Hayashi, Hironori Takahashi
  • Publication number: 20150346663
    Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member and a temperature sensor. The fixing belt is arranged rotatably. The pressuring member is arranged rotatably and configured to come into pressure contact with the fixing belt so as to form a fixing nip. The pressing member is configured to press the fixing belt to the pressuring member side. The temperature sensor is inserted into the pressing member. The pressing member has a through hole penetrating from a face at the fixing nip side to an insertion part of the temperature sensor.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 3, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yoshihiro YAMAGISHI, Yoshiharu KANEMATSU, Takashi EIKI, Hironori TAKAHASHI, Takefumi YOTSUTSUJI, Eriko HAYASHI
  • Publication number: 20150346661
    Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source and a reflecting member. The fixing belt is arranged rotatably around a rotation axis. The reflecting member reflects the radiant heat radiated from the heat source. The fixing belt has a passing region and a non-passing region. Through the passing region, a recording medium passes. The non-passing region is arranged outside the passing region in a direction of the rotation axis. The reflecting member has a first reflecting part and a second reflecting part. The first reflecting part is arranged at an inner circumferential side of the passing region. The second reflecting part is arranged at an inner circumferential side of the non-passing region. Roughness of a face at the heat source side of the second reflecting part is larger than roughness of a face at the heat source side of the first reflecting part.
    Type: Application
    Filed: May 21, 2015
    Publication date: December 3, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Takefumi YOTSUTSUJI, Yoshiharu KANEMATSU, Yoshihiro YAMAGISHI, Takashi EIKI, Eriko HAYASHI, Hironori TAKAHASHI
  • Patent number: 9164446
    Abstract: A fixing device includes a fixing belt, a pressuring member, a driving member and a slide contact member. The fixing belt is arranged rotatably. The pressuring member comes into pressure contact with the fixing belt to form a fixing nip and is arranged rotatably. The driving member is arranged so as to sandwich the fixing belt with the pressuring member and rotates the fixing belt. The slide contact member is arranged so as to sandwich the fixing belt with the pressuring member and comes into slide contact with the fixing belt. The fixing belt is engaged around the driving member and slide contact member with a state having looseness at least partially.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: October 20, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yoshiharu Kanematsu
  • Patent number: 9164448
    Abstract: A fixing device according to one aspect of the present disclosure includes a fixing belt, a pressure member, a heating member, a pressing member, and a heat source. The fixing belt is rotational. The pressure member is rotational and is brought into press-contact with the fixing belt to form a fixing nip. The heating member is rotational and is disposed to interpose the fixing belt between the heating member and the pressure member. The pressing member is disposed to interpose the fixing belt between the pressing member and the pressure member and presses the fixing belt toward the pressure member side. The heat source is disposed radially inside the fixing belt and radially outside the heating member. Radiant heat radiated from the heat source directly reaches the fixing belt, the heating member, and the pressing member.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: October 20, 2015
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Yoshiharu Kanematsu, Yoshihiro Yamagishi
  • Patent number: 9134659
    Abstract: A fixing device includes a fixing member, a pressure member, and a separation roller. The fixing member is configured to rotate in a first direction. The pressure member is configured to rotate in a second direction so as to allow fixing target to pass between the fixing member and the pressure member. The separation roller is configured to rotate only in the same direction as the first direction to separate the fixing target from the fixing member or to rotate only in the same direction as the second direction to separate the fixing target from the pressure member.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: September 15, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yoshiharu Kanematsu
  • Publication number: 20150248088
    Abstract: A fixing device according to one aspect of the present disclosure includes a fixing belt, a pressure member, a heating member, a pressing member, and a heat source. The fixing belt is rotational. The pressure member is rotational and is brought into press-contact with the fixing belt to form a fixing nip. The heating member is rotational and is disposed to interpose the fixing belt between the heating member and the pressure member. The pressing member is disposed to interpose the fixing belt between the pressing member and the pressure member and presses the fixing belt toward the pressure member side. The heat source is disposed radially inside the fixing belt and radially outside the heating member. Radiant heat radiated from the heat source directly reaches the fixing belt, the heating member, and the pressing member.
    Type: Application
    Filed: February 23, 2015
    Publication date: September 3, 2015
    Inventors: Yoshiharu KANEMATSU, Yoshihiro YAMAGISHI
  • Publication number: 20150248089
    Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member and a sheet member. The fixing belt is arranged rotatably and configured to extend along an axis direction. The pressuring member is arranged rotatably and configured to come into pressure contact with the fixing belt so as to form a fixing nip. The pressing member is configured to press the fixing belt to a side of the pressuring member and configured such that the fixing belt is interposed between the pressing member and the pressuring member. The sheet member is formed in a tubular shape and provided around the pressing member and configured to rotate with rotation of the fixing belt.
    Type: Application
    Filed: February 24, 2015
    Publication date: September 3, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Yoshiharu KANEMATSU, Yoshihiro YAMAGISHI, Takashi EIKI, Takefumi YOTSUTSUJI, Eriko HAYASHI, Hironori TAKAHASHI