Patents by Inventor Tsuneo Fukuzawa
Tsuneo Fukuzawa 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: 11925314Abstract: There is provided an ultrasound endoscope of which a distal-end-part body of an insertion unit can be reduced in size. In an ultrasound endoscope according to an embodiment of the invention, a straight pipe portion of a first three-way pipe and a straight pipe portion of a second three-way pipe are arranged adjacent to each other in a direction orthogonal to the direction of a longitudinal axis of an insertion unit, and a branch pipe portion and the straight pipe portion are arranged at positions overlapping with each other in a case where the first three-way pipe and the second three-way pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.Type: GrantFiled: March 26, 2020Date of Patent: March 12, 2024Assignee: FUJIFILM CorporationInventors: Satoru Okada, Yasuhiko Morimoto, Tsuneo Fukuzawa
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Publication number: 20230018672Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.Type: ApplicationFiled: September 19, 2022Publication date: January 19, 2023Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Satoru OKADA, Tsuneo FUKUZAWA
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Publication number: 20220400934Abstract: Provided are a treatment tool elevating mechanism and an ultrasonic endoscope capable of restraining an increase in diameter of an endoscope and bearing a load.Type: ApplicationFiled: May 18, 2022Publication date: December 22, 2022Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Tsuneo FUKUZAWA
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Patent number: 11484188Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.Type: GrantFiled: March 4, 2020Date of Patent: November 1, 2022Assignee: FUJIFILM CorporationInventors: Yasuhiko Morimoto, Satoru Okada, Tsuneo Fukuzawa
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Publication number: 20210369089Abstract: Provided is an endoscope that can fix a guidewire and stably hold a treatment tool. The endoscope includes a distal end body (36) having an elevator housing (62) that opens toward a first direction, a treatment tool lead-out port (80) that opens inside of the elevator housing (62), and an elevator (60) that is provided inside of the elevator housing (62) so as to be rotatable between an elevated position and a lowered position, the elevator (60) having a treatment tool guiding surface (60a). A facing wall portion (66), which is on a proximal end side and an opening part of the elevator housing (62), has a concave surface (96) that is formed on an inner side of the elevator housing (62) and a convex surface (94) that is formed at a position closer than the concave surface (96) to an opening.Type: ApplicationFiled: August 10, 2021Publication date: December 2, 2021Applicant: FUJIFILM CorporationInventors: Tsuneo FUKUZAWA, Yasuhiko MORIMOTO, Satoru OKADA
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Publication number: 20210169308Abstract: Provided is an endoscope that can appropriately illuminate an insertion direction side of an insertion part, a treatment tool and a treatment target region thereof and can reduce the diameter of a distal end part of the insertion part.Type: ApplicationFiled: February 18, 2021Publication date: June 10, 2021Applicant: FUJIFILM CorporationInventors: Tsuneo FUKUZAWA, Yasuhiko MORIMOTO
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Publication number: 20210169312Abstract: Provided is an endoscope that can suppress increase in the temperature of a distal end portion of an insertion section while preventing increase in the number of components and increase in the diameter of the distal end portion.Type: ApplicationFiled: February 18, 2021Publication date: June 10, 2021Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Shozo IYAMA, Tsuneo FUKUZAWA
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Publication number: 20210169313Abstract: Provided is an endoscope capable of reliably illuminating a treatment tool delivered from a treatment tool delivery port and a treatment target region thereof. An endoscope includes a distal end part body that is provided on a distal end side of an insertion part and has a distal end, a proximal end, and a longitudinal axis; the treatment tool delivery port that is formed in the distal end part body and delivers the treatment tool inserted into the insertion part; an elevator that is rotatably supported in the treatment tool delivery port of the distal end part body and controls a delivery direction of the treatment tool delivered from the treatment tool delivery port; and a first illumination window that is provided on the distal end part body. The first illumination window is provided in a proximal end side region at a position shifted from the treatment tool delivery port to a proximal end side of the distal end part body in the distal end part body.Type: ApplicationFiled: February 18, 2021Publication date: June 10, 2021Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Tsuneo FUKUZAWA
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Publication number: 20200323419Abstract: There is provided an ultrasound endoscope of which a distal-end-part body of an insertion unit can be reduced in size. In an ultrasound endoscope according to an embodiment of the invention, a straight pipe portion of a first three-way pipe and a straight pipe portion of a second three-way pipe are arranged adjacent to each other in a direction orthogonal to the direction of a longitudinal axis of an insertion unit, and a branch pipe portion and the straight pipe portion are arranged at positions overlapping with each other in a case where the first three-way pipe and the second three-way pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.Type: ApplicationFiled: March 26, 2020Publication date: October 15, 2020Applicant: FUJIFILM CorporationInventors: Satoru OKADA, Yasuhiko MORIMOTO, Tsuneo FUKUZAWA
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Publication number: 20200315575Abstract: There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof.Type: ApplicationFiled: June 18, 2020Publication date: October 8, 2020Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Tsuneo FUKUZAWA
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Publication number: 20200305691Abstract: There is provided is an endoscope that can improve the cleanliness of a peripheral portion of an elevator. An endoscope (1) includes an insertion part (12) that is provided with a treatment tool insertion channel (82), a distal end portion main body (36), an elevator housing portion (62) that is provided in the distal end portion main body (36) and is open in a first direction, a treatment tool outlet (80) that is open to an inside of the elevator housing portion (62) and communicates with the treatment tool insertion channel (82), and an elevator (60). The elevator (60) has a first surface (64) and a second surface (66) inside a facing region facing the treatment tool outlet (80) in a state where the elevator is positioned at an elevated position.Type: ApplicationFiled: June 16, 2020Publication date: October 1, 2020Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Tsuneo FUKUZAWA
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Publication number: 20200281446Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.Type: ApplicationFiled: March 4, 2020Publication date: September 10, 2020Applicant: FUJIFILM CorporationInventors: Yasuhiko MORIMOTO, Satoru OKADA, Tsuneo FUKUZAWA
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Publication number: 20160147191Abstract: A rotor bearing member is attached to a support body. The support body includes a guide section that supports a first member and a second member such that the first member and the second member are movable toward a rotor. The first member includes a rotary shaft and rotates about the rotary shaft thereof while being in contact with the rotor. The second member includes a rotary shaft extending along the rotary shaft of the first member and cleans a surface of the first member while rotating in contact with the first member. The rotor bearing member includes a first bearing member and a second bearing member that rotatably support the rotary shaft of the second member and the rotary shaft of the first member, respectively, while the first bearing member and the second bearing member abut each other.Type: ApplicationFiled: May 26, 2015Publication date: May 26, 2016Applicant: FUJI XEROX CO., LTD.Inventors: Tsuneo FUKUZAWA, Hirohisa HOSHINO, Takeo FUKAI, Koji FUKUMURO, Kenji SUZUKI, Hirokazu ICHIHARA, Akihito NISHIMURA
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Patent number: 9335705Abstract: A rotor bearing member is attached to a support body. The support body includes a guide section that supports a first member and a second member such that the first member and the second member are movable toward a rotor. The first member includes a rotary shaft and rotates about the rotary shaft thereof while being in contact with the rotor. The second member includes a rotary shaft extending along the rotary shaft of the first member and cleans a surface of the first member while rotating in contact with the first member. The rotor bearing member includes a first bearing member and a second bearing member that rotatably support the rotary shaft of the second member and the rotary shaft of the first member, respectively, while the first bearing member and the second bearing member abut each other.Type: GrantFiled: May 26, 2015Date of Patent: May 10, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Tsuneo Fukuzawa, Hirohisa Hoshino, Takeo Fukai, Koji Fukumuro, Kenji Suzuki, Hirokazu Ichihara, Akihito Nishimura
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Patent number: 8687993Abstract: A charging device includes a charging member in contact with or adjacent to a charged body, a charge housing that holds the charging member, bearing members that rotatably support the charging member, at least one of the bearing members being a conductive bearing member, pressing members that press the bearing members toward the charged body, at least the pressing member for the conductive bearing member being formed of a conductive material, a platelike power supply member in contact with the pressing member for the conductive bearing member, and positioning mechanisms that position the bearing members. The power supply member has a platelike extending portion. The positioning mechanism provided on a power supplied side of the charging member includes a positioning portion provided in the conductive bearing member, and a positioned portion provided in the extending portion. The positioned portion engages with the positioning portion when the extending portion elastically deforms.Type: GrantFiled: August 5, 2011Date of Patent: April 1, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Honobe, Hiroki Ando, Tsuneo Fukuzawa
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Patent number: 8634755Abstract: A cleaning unit includes: a cleaning member that cleans the surface of the image carrier; a cleaning container that stores developer removed by the cleaning member; a cleaning support that is formed by bending a plate and includes a cleaning-supporting portion supporting the other end portion of the cleaning member and a supported portion angled with respect to the cleaning-supporting portion by bending; a supporting-portion-of-support that includes a facing portion facing the supported portion, is provided at the cleaning container, and supports the cleaning support; a damping member that is disposed between the supported portion and the facing portion, is formed so as to be elastically deformable, and regulates vibration of the cleaning member; and a securing member that secures the cleaning support to the supporting-portion-of-support at a position adjacent to the damping member.Type: GrantFiled: February 28, 2011Date of Patent: January 21, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Tomoya Ichikawa, Akiko Kimura, Yuzo Ichikawa, Takahiro Shinkawa, Masaaki Tokunaga, Tsuneo Fukuzawa, Hirohisa Hoshino, Satoshi Honobe
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Patent number: 8608394Abstract: An image-forming apparatus includes: a plural image-holding members, each image-holding member holding an image and being rotatable around a rotation shaft; a frame member that at least partially defines a space for accommodating the plural image-holding members therein; a cover provided to the frame member to open and close the space with respect to an outside, an inner side of the cover being formed with rotation shaft insertion holes each for receiving an end portion of the rotation shaft of a corresponding one of the image-holding members accommodated in the space; a supporting shaft that supports the cover such that the cover is pivotable with respect to the frame member, the supporting shaft being inserted into a supporting shaft insertion hole provided to the frame member or to the cover, the supporting shaft insertion hole being elongated in a direction having a vertical component when the cover closes the space; and a positioning mechanism that positions the cover with respect to the frame member wheType: GrantFiled: May 28, 2010Date of Patent: December 17, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroki Ando, Toshiyuki Matsui, Satoshi Honobe, Tsuneo Fukuzawa, Tomonori Sato, Fumiaki Maekawa, Toshihiro Maruta
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Patent number: 8554109Abstract: An image forming apparatus including plural image forming units each having an image-carrier includes: a cylindrical image-carrier body holding an image; a rotary shaft inserted in the image-carrier body, and rotatably supporting the image-carrier body; a coupling member fitted to an end portion of the rotary shaft, transmitting a rotational-drive-force to the rotary shaft; an engaging member projecting from a circumferential surface of the rotary shaft, being engaged to an engaged portion formed in the image-carrier body to disable relative rotation of the image-carrier body to the rotary shaft; and an attaching member continuously inserted into a first through hole formed in the coupling member and a second through hole formed in the rotary shaft and fixed thereto such that an angle formed between the engaging member and the attaching member is substantially 90 degrees as seen in an rotary shaft axial-direction, attaching the coupling member and the rotary shaft.Type: GrantFiled: December 6, 2010Date of Patent: October 8, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Tsuneo Fukuzawa, Hiroki Ando, Satoshi Honobe, Toshiyuki Matsui
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Patent number: 8437658Abstract: An image forming apparatus includes an operating portion that moves between a first operating position in which each of positioning members is moved to each of positioning positions and a second operating position in which each of the positioning members is moved to each of releasing positions through each of transmitting members and each of transmitted members when a first transmitting member and a first transmitted member are coupled to each other, and that carries out the movement to a first operating position to move a second positioning member to a second positioning position through a second transmitting member and a second transmitted member and carries out the movement to a second operating position to move the second positioning member to a second releasing position when the first transmitting member and the first transmitted member are decoupled from each other.Type: GrantFiled: August 12, 2010Date of Patent: May 7, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Honobe, Hiroki Ando, Toshiyuki Matsui, Tomonori Sato, Tsuneo Fukuzawa, Fumiaki Maekawa
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Patent number: 8417172Abstract: A powder collecting container includes: a first chamber that is configured to store collected powder; a conveying unit that has a rotary shaft, and a powder conveying blade formed to be wound around the rotary shaft, the conveying unit being arranged along an upper-limit zone for accommodating powder in the first chamber and configured to convey powder which is contained in the first chamber and located at a position exceeding the upper-limit zone. A hollow member has an opening portion formed in a peripheral wall so that a powder conveying end of the conveying unit is located in the opening portion, and that the conveying unit passes through the hollow member. A second chamber has an inlet provided to face the opening portion so that powder conveyed by the conveying unit enters the second chamber from the inlet.Type: GrantFiled: May 18, 2010Date of Patent: April 9, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Tomonori Sato, Fumiaki Maekawa, Hiroki Ando, Satoshi Honobe, Toshiyuki Matsui, Tsuneo Fukuzawa