Patents by Inventor Takehiro Meguro

Takehiro Meguro 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: 11016421
    Abstract: According to one embodiment, a belt positioning structure includes a belt roller around which an endless belt is wound. The belt comprises a belt-side positioning component curbing position aberration from the belt roller in a roller shaft direction. The belt roller comprises a roller-side positioning component curbing position aberration of the belt in a belt shaft direction. The roller-side positioning component comprises a regulation plate formed along a virtual tapered surface that has a diameter on one side in the roller shaft direction larger than a diameter on an opposite side of the regulation plate. The regulation plate comprises a movement regulation component that regulates movement of the belt-side positioning component to the one side of the belt-side positioning component in the roller shaft direction and strengthens a movement regulation force to the one side of the belt-side positioning component in the roller shaft direction.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: May 25, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takehiro Meguro, Yoshiki Kogiso
  • Patent number: 10955772
    Abstract: According to one embodiment, there is provided a belt positioning structure including a belt roller, a belt, a projection, and a first rotating body. The belt roller is rotatable about a roller axis. The belt is wound around the belt roller. The projection is provided so as to protrude from an inner peripheral surface of the belt. The first rotating body regulates the projection from moving in a first direction approaching the belt roller along the roller axis. The first rotating body is rotatable around an axis. At least a portion of an outer peripheral surface of the first rotating body faces a side surface of the projection on the first direction side.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: March 23, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Takehiro Meguro
  • Patent number: 10209647
    Abstract: Certain embodiments provide a transfer apparatus, which including: an conductive intermediate transfer member; a transfer section configured to secondarily transfer a toner image onto an image receiving medium in a constant current system; a conveyance section configured to convey the image receiving medium; and a high voltage transformer configured to apply a bias to the transfer member, wherein the sum of the products of the volume resistivities [?·cm] and the thicknesses [cm] of the intermediate transfer member and the transfer member is equal to or greater than 3.6×108 ?·cm2, and the conveyance speed V[mm/s] of the image receiving medium={the output upper limit value A[V] of the absolute value of the voltage output from the transfer polarity side of the high voltage transformer}×0.009.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 19, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Sunao Takenaka, Suguru Kurita, Koichiro Sato, Koji Takahashi, Kazufumi Ishida, Yoshiki Kogiso, Takehiro Meguro
  • Publication number: 20180101112
    Abstract: Certain embodiments provide a transfer apparatus, which including: an conductive intermediate transfer member; a transfer section configured to secondarily transfer a toner image onto an image receiving medium in a constant current system; a conveyance section configured to convey the image receiving medium; and a high voltage transformer configured to apply a bias to the transfer member, wherein the sum of the products of the volume resistivities [?·cm] and the thicknesses [cm] of the intermediate transfer member and the transfer member is equal to or greater than 3.6×108 ?·cm2, and the conveyance speed V[mm/s] of the image receiving medium={the output upper limit value A[V] of the absolute value of the voltage output from the transfer polarity side of the high voltage transformer}×0.009.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 12, 2018
    Inventors: Sunao Takenaka, Suguru Kurita, Koichiro Sato, Koji Takahashi, Kazufumi Ishida, Yoshiki Kogiso, Takehiro Meguro
  • Patent number: 9891559
    Abstract: Certain embodiments provide a transfer apparatus, which including: an conductive intermediate transfer member; a transfer section configured to secondarily transfer a toner image onto an image receiving medium in a constant current system; a conveyance section configured to convey the image receiving medium; and a high voltage transformer configured to apply a bias to the transfer member, wherein the sum of the products of the volume resistivities [?·cm] and the thicknesses [cm] of the intermediate transfer member and the transfer member is equal to or greater than 3.6×108 ?·cm2, and the conveyance speed V[mm/s] of the image receiving medium={the output upper limit value A[V] of the absolute value of the voltage output from the transfer polarity side of the high voltage transformer}×0.009.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: February 13, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Sunao Takenaka, Suguru Kurita, Koichiro Sato, Koji Takahashi, Kazufumi Ishida, Yoshiki Kogiso, Takehiro Meguro
  • Publication number: 20170185004
    Abstract: Certain embodiments provide a transfer apparatus, which including: an conductive intermediate transfer member; a transfer section configured to secondarily transfer a toner image onto an image receiving medium in a constant current system; a conveyance section configured to convey the image receiving medium; and a high voltage transformer configured to apply a bias to the transfer member, wherein the sum of the products of the volume resistivities [?·cm] and the thicknesses [cm] of the intermediate transfer member and the transfer member is equal to or greater than 3.6×108 ?·cm2, and the conveyance speed V[mm/s] of the image receiving medium={the output upper limit value A[V] of the absolute value of the voltage output from the transfer polarity side of the high voltage transformer}×0.009.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: Sunao Takenaka, Suguru Kurita, Koichiro Sato, Koji Takahashi, Kazufumi Ishida, Yoshiki Kogiso, Takehiro Meguro
  • Patent number: 9409432
    Abstract: In accordance with an embodiment, the marking apparatus comprises a marking section configured to print, with a color erasable material, a mark in the margin area of a sheet and a marking control section configured to overprint, using the marking section, a mark at a specific position of the sheet every time an image is formed in the image printing area of the sheet with a color erasable material.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: August 9, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takehiro Meguro, Hiroshi Ishii
  • Publication number: 20150343826
    Abstract: In accordance with an embodiment, the marking apparatus comprises a marking section configured to print, with a color erasable material, a mark in the margin area of a sheet and a marking control section configured to overprint, using the marking section, a mark at a specific position of the sheet every time an image is formed in the image printing area of the sheet with a color erasable material.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: Takehiro Meguro, Hiroshi Ishii
  • Patent number: 9132661
    Abstract: In accordance with an embodiment, the marking apparatus comprises a marking section configured to print, with a color erasable material, a mark in the margin area of a sheet and a marking control section configured to overprint, using the marking section, a mark at a specific position of the sheet every time an image is formed in the image printing area of the sheet with a color erasable material.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: September 15, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Takehiro Meguro, Hiroshi Ishii
  • Publication number: 20150130885
    Abstract: In accordance with an embodiment, the marking apparatus comprises a marking section configured to print, with a color erasable material, a mark in the margin area of a sheet and a marking control section configured to overprint, using the marking section, a mark at a specific position of the sheet every time an image is formed in the image printing area of the sheet with a color erasable material.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: Takehiro Meguro, Hiroshi Ishii
  • Publication number: 20100266308
    Abstract: An image forming apparatus configured to form an image on a transfer medium with a developer includes: an image bearing member on which an electrostatic latent image is formed, the developer is supplied to develop the electrostatic latent image, and an image to be transferred onto the transfer medium is formed, the image bearing member having surface hardness of 150 N/mm to 220 N/mm in a universal hardness value (HU); a developing device configured to supply the developer to the image bearing member; a cleaner configured to be brought into press-contact with the image bearing member at press-contact linear pressure x in a range of 16.7?x?22.0 [mN/mm]) and collect components of the developer remaining on the image bearing member after the image is transferred onto the transfer medium; and a lubricant containing fatty acid metal salt arranged at a distal end of the cleaner being in contact with the image bearing member, at an arrangement amount y in a range of 25?y?100 [ng/mm] to satisfy a condition y?12.
    Type: Application
    Filed: April 15, 2010
    Publication date: October 21, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takehiro Meguro, Toshimi Yamashita, Tomoyuki Kato
  • Patent number: 6459866
    Abstract: A cleaning device comprises a device case having a toner collecting space, a blade holder swingably supported in directions in which the blade holder approaches and leaves from the photosensitive drum, an elastic seal member attached to one of a wall of the toner collecting space and the blade holder, between an outer face of the wall forming the toner collecting space and the blade holder, in order to be forcibly brought into contact with one of the wall forming the toner collecting space and the blade holder, wherein the blade holder or the wall forming the toner collecting space has a protrusion that is at least partly welded into the elastic seal member, and is forcibly brought into contact with the elastic seal member.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: October 1, 2002
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Takehiro Meguro
  • Publication number: 20020025181
    Abstract: A cleaning device comprises a device case having a toner collecting space, a blade holder swingably supported in directions in which the blade holder approaches and leaves from the photosensitive drum, an elastic seal member attached to one of a wall of the toner collecting space and the blade holder, between an outer face of the wall forming the toner collecting space and the blade holder, in order to be forcibly brought into contact with one of the wall forming the toner collecting space and the blade holder, wherein the blade holder or the wall forming the toner collecting space the blade holder has a protrusion for wedging to a part of a surface of the elastic seal member, and is forcibly brought into contact with the elastic seal member.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 28, 2002
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventor: Takehiro Meguro