Patents by Inventor Takashi Eiki
Takashi Eiki 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: 9454115Abstract: 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: GrantFiled: May 21, 2015Date of Patent: September 27, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Takefumi Yotsutsuji, Yoshiharu Kanematsu, Yoshihiro Yamagishi, Takashi Eiki, Eriko Hayashi, Hironori Takahashi
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Patent number: 9436141Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a temperature sensor and a controller. A detected region whose temperature is detected by the temperature sensor is formed in the fixing belt, and an elastic layer of the detected region is provided with a hole in a part thereof in a circumferential direction. The controller judges that the fixing belt is rotating in a case where the temperature detected by the temperature sensor alternately increases and decreases in a state that the heat source is heating the fixing belt, and judges that the fixing belt is not rotating in a case where the temperature detected by the temperature sensor does not alternately increase and decrease in the state that the heat source is heating the fixing belt.Type: GrantFiled: January 13, 2016Date of Patent: September 6, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Takefumi Yotsutsuji, Yoshihiro Yamagishi, Takashi Eiki
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Patent number: 9405245Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device and a deformation preventing member. The deformation preventing member is configured to face an inner circumferential face of the fixing belt. In a state where the fixing belt is not broken in a circumferential direction, the fixing belt and the deformation preventing member are arranged at an interval, and when the fixing belt is broken in the circumferential direction, the fixing belt is deformed and comes into contact with the deformation preventing member so that the fixing belt is prevented from being deformed to a side far from the heating stop device.Type: GrantFiled: October 28, 2015Date of Patent: August 2, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshihiro Yamagishi, Satoshi Ishii, Takashi Eiki, Takefumi Yotsutsuji
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Patent number: 9405246Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member and a first heating stop device. The fixing belt is provided to be rotatable around a rotation axis. The pressuring member is configured to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source is arranged at an inner diameter side of the fixing belt, provided at a position displaced from the rotation axis and configured to heat the fixing belt. The pressing member is configured to press the fixing belt to a side of the pressuring member. The first heating stop device is configured to face an outer circumferential face of a closest part to the heat source of the fixing belt and to operate at a first operating temperature so as to stop the heat source from heating the fixing belt.Type: GrantFiled: November 5, 2015Date of Patent: August 2, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshihiro Yamagishi, Satoshi Ishii, Takashi Eiki, Takefumi Yotsutsuji
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Publication number: 20160216665Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a temperature sensor and a controller. A detected region whose temperature is detected by the temperature sensor is formed in the fixing belt, and an elastic layer of the detected region is provided with a hole in a part thereof in a circumferential direction. The controller judges that the fixing belt is rotating in a case where the temperature detected by the temperature sensor alternately increases and decreases in a state that the heat source is heating the fixing belt, and judges that the fixing belt is not rotating in a case where the temperature detected by the temperature sensor does not alternately increase and decrease in the state that the heat source is heating the fixing belt.Type: ApplicationFiled: January 13, 2016Publication date: July 28, 2016Applicant: KYOCERA Document Solutions Inc.Inventors: Takefumi YOTSUTSUJI, Yoshihiro YAMAGISHI, Takashi EIKI
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Patent number: 9400465Abstract: A fixing device fixing an image on a recording medium includes a fixing belt rotatable around a first rotation axis, a pressuring member, a heat source body and a cover member. The pressuring member forms a nip part pressuring and making the recording medium pass through with the fixing belt. The heat source body is arranged inside the fixing belt and heats the fixing belt by emitting radiant heat. The cover member is arranged between the fixing belt and the heat source body and covers the heat source body. The nip part has a passing area where the recording medium passes through and a non-passing area outside the passing area in an axial direction. The cover member covers a part of the heat source body corresponding to the non-passing area and includes through holes formed so as to adjust surface temperature of the heat source body.Type: GrantFiled: November 5, 2015Date of Patent: July 26, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Takashi Eiki, Yoshihiro Yamagishi, Takefumi Yotsutsuji
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Patent number: 9372457Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device, shape restricting members and biasing members. The fixing belt is provided to be rotatable around a rotation axis. The pressing member is provided to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source heats the fixing belt. The pressing member presses the fixing belt to a side of the pressuring member. The heating stop device faces an outer circumferential face of the fixing belt and to operate at an operating temperature so as to stop the heat source from heating the fixing belt. The shape restricting members are attached to both end parts of the fixing belt and restricts a shape of the fixing belt.Type: GrantFiled: October 28, 2015Date of Patent: June 21, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshihiro Yamagishi, Satoshi Ishii, Takashi Eiki, Takefumi Yotsutsuji
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Publication number: 20160154353Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member, a shape restricting member and an elastic body. The fixing belt is configured to be rotatable. The pressuring member is configured to be rotatable and 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. The shape restricting member is configured to restrict a shape of the fixing belt and having an arc-shaped insertion part to be inserted into an end part of the fixing belt. The elastic body is attached to an end part in a circumferential direction of the insertion part.Type: ApplicationFiled: November 19, 2015Publication date: June 2, 2016Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Takefumi YOTSUTSUJI, Yoshihiro YAMAGISHI, Takashi EIKI
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Publication number: 20160132005Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device, shape restricting members and biasing members. The fixing belt is provided to be rotatable around a rotation axis. The pressing member is provided to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source heats the fixing belt. The pressing member presses the fixing belt to a side of the pressuring member. The heating stop device faces an outer circumferential face of the fixing belt and to operate at an operating temperature so as to stop the heat source from heating the fixing belt. The shape restricting members are attached to both end parts of the fixing belt and restricts a shape of the fixing belt.Type: ApplicationFiled: October 28, 2015Publication date: May 12, 2016Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshihiro YAMAGISHI, Satoshi ISHII, Takashi EIKI, Takefumi YOTSUTSUJI
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Publication number: 20160132007Abstract: A fixing device fixing an image on a recording medium includes a fixing belt rotatable around a first rotation axis, a pressuring member, a heat source body and a cover member. The pressuring member forms a nip part pressuring and making the recording medium pass through with the fixing belt. The heat source body is arranged inside the fixing belt and heats the fixing belt by emitting radiant heat. The cover member is arranged between the fixing belt and the heat source body and covers the heat source body. The nip part has a passing area where the recording medium passes through and a non-passing area outside the passing area in an axial direction. The cover member covers a part of the heat source body corresponding to the non-passing area and includes through holes formed so as to adjust surface temperature of the heat source body.Type: ApplicationFiled: November 5, 2015Publication date: May 12, 2016Applicant: KYOCERA Document Solutions Inc.Inventors: Takashi EIKI, Yoshihiro YAMAGISHI, Takefumi YOTSUTSUJI
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Publication number: 20160132008Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member and a first heating stop device. The fixing belt is provided to be rotatable around a rotation axis. The pressuring member is configured to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source is arranged at an inner diameter side of the fixing belt, provided at a position displaced from the rotation axis and configured to heat the fixing belt. The pressing member is configured to press the fixing belt to a side of the pressuring member. The first heating stop device is configured to face an outer circumferential face of a closest part to the heat source of the fixing belt and to operate at a first operating temperature so as to stop the heat source from heating the fixing belt.Type: ApplicationFiled: November 5, 2015Publication date: May 12, 2016Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshihiro YAMAGISHI, Satoshi ISHII, Takashi EIKI, Takefumi YOTSUTSUJI
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Publication number: 20160132004Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device and a deformation preventing member. The deformation preventing member is configured to face an inner circumferential face of the fixing belt. In a state where the fixing belt is not broken in a circumferential direction, the fixing belt and the deformation preventing member are arranged at an interval, and when the fixing belt is broken in the circumferential direction, the fixing belt is deformed and comes into contact with the deformation preventing member so that the fixing belt is prevented from being deformed to a side far from the heating stop device.Type: ApplicationFiled: October 28, 2015Publication date: May 12, 2016Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Yoshihiro YAMAGISHI, Satoshi ISHII, Takashi EIKI, Takefumi YOTSUTSUJI
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Patent number: 9335691Abstract: 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: GrantFiled: May 26, 2015Date of Patent: May 10, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshihiro Yamagishi, Yoshiharu Kanematsu, Takashi Eiki, Hironori Takahashi, Takefumi Yotsutsuji, Eriko Hayashi
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Publication number: 20160054690Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a moving member and a biasing member. The moving member is movable between a first position where the moving member blocks the radiant heat from the heat source to the fixing belt and a second position where the moving member does not block the radiant heat from the heat source to the fixing belt. The biasing member biases the moving member to the first position. The moving member moves from the first position to the second position by a friction force between the fixing belt and the moving member against a biasing force of the biasing member when the fixing belt is rotated. The moving member moves from the second position to the first position by the biasing force of the biasing member when a rotation of the fixing belt is stopped.Type: ApplicationFiled: August 5, 2015Publication date: February 25, 2016Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventor: Takashi EIKI
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Patent number: 9250589Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a moving member and a biasing member. The moving member is movable between a first position where the moving member blocks the radiant heat from the heat source to the fixing belt and a second position where the moving member does not block the radiant heat from the heat source to the fixing belt. The biasing member biases the moving member to the first position. The moving member moves from the first position to the second position by a friction force between the fixing belt and the moving member against a biasing force of the biasing member when the fixing belt is rotated. The moving member moves from the second position to the first position by the biasing force of the biasing member when a rotation of the fixing belt is stopped.Type: GrantFiled: August 5, 2015Date of Patent: February 2, 2016Assignee: KYOCERA Document Solutions Inc.Inventor: Takashi Eiki
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Patent number: 9229393Abstract: 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: GrantFiled: February 24, 2015Date of Patent: January 5, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshiharu Kanematsu, Yoshihiro Yamagishi, Takashi Eiki, Takefumi Yotsutsuji, Eriko Hayashi, Hironori Takahashi
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Publication number: 20150346663Abstract: 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: ApplicationFiled: May 26, 2015Publication date: December 3, 2015Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshihiro YAMAGISHI, Yoshiharu KANEMATSU, Takashi EIKI, Hironori TAKAHASHI, Takefumi YOTSUTSUJI, Eriko HAYASHI
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Publication number: 20150346661Abstract: 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: ApplicationFiled: May 21, 2015Publication date: December 3, 2015Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Takefumi YOTSUTSUJI, Yoshiharu KANEMATSU, Yoshihiro YAMAGISHI, Takashi EIKI, Eriko HAYASHI, Hironori TAKAHASHI
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Publication number: 20150248089Abstract: 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: ApplicationFiled: February 24, 2015Publication date: September 3, 2015Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Yoshiharu KANEMATSU, Yoshihiro YAMAGISHI, Takashi EIKI, Takefumi YOTSUTSUJI, Eriko HAYASHI, Hironori TAKAHASHI
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Patent number: 8934818Abstract: An image forming apparatus includes a controller that controls rotational driving of a magnetic roller and rotational driving of a developing roller. The controller is capable of performing a toner collecting mode when no image formation is performed. In the toner collecting mode, the magnetic roller and the developing roller are intermittently rotated in a direction reverse to a direction in which the magnetic roller and the developing roller are rotated during image formation, then the magnetic roller is made to rotate in a forward direction, and then, the magnetic roller is rotated in a backward direction.Type: GrantFiled: April 8, 2013Date of Patent: January 13, 2015Assignee: KYOCERA Document Solutions Inc.Inventor: Takashi Eiki