Patents by Inventor Isao Yahata

Isao Yahata 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: 10802423
    Abstract: A printer includes a sheet feeder; an intermediate transfer body; a first image forming device; a second image forming device arranged downstream of the first image forming device; a secondary transfer roller arranged downstream of the second image forming device; and a processor. The processor moves the secondary transfer roller away from the intermediate transfer body, primarily transfers a second toner image onto the intermediate transfer body, rotates the intermediate transfer body until the second toner image reaches the first image forming device, primarily transfers the first toner image onto the intermediate transfer body by superimposing the first toner image on the second toner image, causes the secondary transfer roller to contact the intermediate transfer body, and secondarily transfers the first toner image and the second toner image onto the sheet using the secondary transfer roller. The printer further includes a fixing device.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 13, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Masaki Takahashi, Isao Yahata
  • Publication number: 20200166873
    Abstract: A printer includes a sheet feeder; an intermediate transfer body; a first image forming device; a second image forming device arranged downstream of the first image forming device; a secondary transfer roller arranged downstream of the second image forming device; and a processor. The processor moves the secondary transfer roller away from the intermediate transfer body, primarily transfers a second toner image onto the intermediate transfer body, rotates the intermediate transfer body until the second toner image reaches the first image forming device, primarily transfers the first toner image onto the intermediate transfer body by superimposing the first toner image on the second toner image, causes the secondary transfer roller to contact the intermediate transfer body, and secondarily transfers the first toner image and the second toner image onto the sheet using the secondary transfer roller. The printer further includes a fixing device.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Masaki Takahashi, Isao Yahata
  • Patent number: 10571831
    Abstract: A printer includes a sheet feeder; an intermediate transfer body; a first image forming device; a second image forming device arranged downstream of the first image forming device; a secondary transfer roller arranged downstream of the second image forming device; and a processor. The processor moves the secondary transfer roller away from the intermediate transfer body, primarily transfers a second toner image onto the intermediate transfer body, rotates the intermediate transfer body until the second toner image reaches the first image forming device, primarily transfers the first toner image onto the intermediate transfer body by superimposing the first toner image on the second toner image, causes the secondary transfer roller to contact the intermediate transfer body, and secondarily transfers the first toner image and the second toner image onto the sheet using the secondary transfer roller. The printer further includes a fixing device.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: February 25, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Masaki Takahashi, Isao Yahata
  • Patent number: 10444679
    Abstract: An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: October 15, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Patent number: 10336117
    Abstract: An image erasing apparatus according to an embodiment includes a sheet supply portion that supplies a sheet and an ejector. A first conveying path conveys the sheet from the sheet supply portion toward the ejector. A reader arranged on the first conveying path reads an image on the sheet. A second conveying path branches from the first conveying path at a downstream of the reader on the first conveying path and merges with the first conveying path at an upstream of the reader on the first conveying path. An erasing unit is arranged on the second conveying path. A conveying path changing portion is arranged at a branching portion. An operating portion receives a setup of the processing to the sheet. A controller changes a conveying path of the sheet in accordance with the setup received by the operating portion before the sheet is supplied from the sheet supply portion.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: July 2, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ken Iguchi, Hidetoshi Yokochi, Isao Yahata, Takahiro Kawaguchi, Yoshiaki Sugizaki, Kikuo Mizutani, Hiroyuki Taki, Hiroyuki Tsuchihashi, Chiaki Iizuka
  • Publication number: 20190025740
    Abstract: An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 24, 2019
    Inventor: Isao YAHATA
  • Patent number: 10131174
    Abstract: An erasing apparatus of embodiments has a color erasing device, the color erasing device has: a first heating member; a second heating member provided at a position facing the first heating member so as to form a nip portion therebetween through which the sheet is passed; a halogen lamp configured to heat the second heating member from outside thereof; and a reflector provided at a position opposite to the second heating member with the halogen lamp interposed therebetween and having a reflective surface configured to reflect heat received from the halogen lamp toward the second heating member, the reflector forming a guiding section configured to be in sliding contact with the sheet being conveyed so as to guide the sheet to the nip portion, the guiding section being heated by the halogen lamp.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: November 20, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Hiroyuki Tsuchihashi, Kikuo Mizutani, Hidetoshi Yokochi, Isao Yahata, Takahiro Kawaguchi, Yoshiaki Sugizaki, Hiroyuki Taki, Ken Iguchi, Chiaki Iizuka
  • Patent number: 10112427
    Abstract: An image decoloring device operates in a power-saving mode and in a normal mode. The image decoloring device includes a decoloring processing unit which removes a color of a decolorable colorant that forms an image on a sheet by applying heat to the sheet. A sheet carrying unit conveys the sheet through the decoloring processing unit. A processor controls the sheet carrying unit. If the image decoloring device is operating in the power-saving mode, a conveyance speed of the sheet through the decoloring processing unit is a first speed. If the image decoloring carrying unit is operating in the normal mode, the conveyance speed of the sheet through the decoloring processing unit is a second speed greater than the first speed.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: October 30, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ken Iguchi, Isao Yahata, Takahiro Kawaguchi, Hiroyuki Taguchi, Hiroyuki Tsuchihashi, Hiroyuki Taki
  • Publication number: 20180304662
    Abstract: An image erasing apparatus according to an embodiment includes a sheet supply portion that supplies a sheet and an ejector. A first conveying path conveys the sheet from the sheet supply portion toward the ejector. A reader arranged on the first conveying path reads an image on the sheet. A second conveying path branches from the first conveying path at a downstream of the reader on the first conveying path and merges with the first conveying path at an upstream of the reader on the first conveying path. An erasing unit is arranged on the second conveying path. A conveying path changing portion is arranged at a branching portion. An operating portion receives a setup of the processing to the sheet. A controller changes a conveying path of the sheet in accordance with the setup received by the operating portion before the sheet is supplied from the sheet supply portion.
    Type: Application
    Filed: June 27, 2018
    Publication date: October 25, 2018
    Inventors: Ken IGUCHI, Hidetoshi YOKOCHI, Isao YAHATA, Takahiro KAWAGUCHI, Yoshiaki SUGIZAKI, Kikuo MIZUTANI, Hiroyuki TAKI, Hiroyuki TSUCHIHASHI, Chiaki IIZUKA
  • Patent number: 10108119
    Abstract: An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: October 23, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Publication number: 20180239293
    Abstract: A sheet processing apparatus includes a transfer section, a fixing section, a feed section, a discharge port, an upstream side retention section, a downstream side retention section and a controller. The upstream side retention section is arranged at the upstream side with respect to the transfer section and retains a sheet conveyed from the feed section. The downstream side retention section is arranged at the downstream side with respect to the fixing section and retains the sheet conveyed from the fixing section. The controller stops conveyance of the sheet to the discharge port. The controller controls discharging of the front end of the sheet retained at a most downstream side to the discharge port, conveys the sheet from the upstream side retention section to the downstream side retention section, and conveys the sheet from the feed section to the upstream side retention section.
    Type: Application
    Filed: August 10, 2017
    Publication date: August 23, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Isao YAHATA, Kimie KAMATA
  • Patent number: 10035369
    Abstract: An image erasing apparatus according to an embodiment includes a sheet supply portion that supplies a sheet and an ejector. A first conveying path conveys the sheet from the sheet supply portion toward the ejector. A reader arranged on the first conveying path reads an image on the sheet. A second conveying path branches from the first conveying path at a downstream of the reader on the first conveying path and merges with the first conveying path at an upstream of the reader on the first conveying path. An erasing unit is arranged on the second conveying path. A conveying path changing portion is arranged at a branching portion. An operating portion receives a setup of the processing to the sheet. A controller changes a conveying path of the sheet in accordance with the setup received by the operating portion before the sheet is supplied from the sheet supply portion.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: July 31, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ken Iguchi, Hidetoshi Yokochi, Isao Yahata, Takahiro Kawaguchi, Yoshiaki Sugizaki, Kikuo Mizutani, Hiroyuki Taki, Hiroyuki Tsuchihashi, Chiaki Iizuka
  • Publication number: 20180201467
    Abstract: A sheet post-processing apparatus includes a sheet folding unit and a binding processing unit. The sheet folding unit is located along a conveyance path of a sheet to be folded and performs folding processing on the sheet to form a folded body having a fold along a direction crossing a sheet conveyance direction. The binding processing unit is located downstream of the sheet folding unit in the sheet conveyance direction and performs binding processing on the folded body to bind a lateral side of the folded body.
    Type: Application
    Filed: June 22, 2017
    Publication date: July 19, 2018
    Inventors: Hiroyuki TAKI, Kimie KAMATA, Isao YAHATA
  • Patent number: 10022997
    Abstract: In accordance with one embodiment, a decoloring apparatus comprises a processor, a decoloring section, a shift roller, a paper discharge section and a paper discharge roller. The processor determines whether or not to execute either a decoloring job or a non-decoloring job. The decoloring section decolors an image on paper formed with decolorable coloring agent. The shift roller moves paper for decoloring job or paper for non-decoloring job in a direction orthogonal to a paper discharge direction of the paper on a same plane for a given distance to sort it. The paper discharge section stacks discharged papers. The paper discharge roller discharges the paper sorted by the shift roller to the paper discharge section.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 17, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Publication number: 20180178572
    Abstract: An erasing apparatus of embodiments has a color erasing device, the color erasing device has: a first heating member; a second heating member provided at a position facing the first heating member so as to form a nip portion therebetween through which the sheet is passed; a halogen lamp configured to heat the second heating member from outside thereof; and a reflector provided at a position opposite to the second heating member with the halogen lamp interposed therebetween and having a reflective surface configured to reflect heat received from the halogen lamp toward the second heating member, the reflector forming a guiding section configured to be in sliding contact with the sheet being conveyed so as to guide the sheet to the nip portion, the guiding section being heated by the halogen lamp.
    Type: Application
    Filed: February 23, 2018
    Publication date: June 28, 2018
    Inventors: Hiroyuki TSUCHIHASHI, Kikuo MIZUTANI, Hidetoshi YOKOCHI, Isao YAHATA, Takahiro KAWAGUCHI, Yoshiaki SUGIZAKI, Hiroyuki TAKI, Ken IGUCHI, Chiaki IIZUKA
  • Patent number: 9987868
    Abstract: An image forming apparatus according to an embodiment includes a feeder unit that stores a sheet on which no image is formed. A printer device forms an image on the sheet stored by the feeder unit. An erasing apparatus is connectably and detachably attached to the image forming apparatus. The erasing apparatus includes a first sheet stack that stores an unerased sheet on which an image is formed and an erasing device that erases the image formed on the unerased sheet.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: June 5, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Isao Yahata, Ken Iguchi, Naofumi Soga
  • Publication number: 20180141365
    Abstract: In accordance with one embodiment, a decoloring apparatus comprises a processor, a decoloring section, a shift roller, a paper discharge section and a paper discharge roller. The processor determines whether or not to execute either a decoloring job or a non-decoloring job. The decoloring section decolors an image on paper formed with decolorable coloring agent. The shift roller moves paper for decoloring job or paper for non-decoloring job in a direction orthogonal to a paper discharge direction of the paper on a same plane for a given distance to sort it. The paper discharge section stacks discharged papers. The paper discharge roller discharges the paper sorted by the shift roller to the paper discharge section.
    Type: Application
    Filed: January 18, 2018
    Publication date: May 24, 2018
    Inventor: Isao Yahata
  • Patent number: 9925817
    Abstract: An erasing apparatus of embodiments has a color erasing device, the color erasing device has: a first heating member; a second heating member provided at a position facing the first heating member so as to form a nip portion therebetween through which the sheet is passed; a halogen lamp configured to heat the second heating member from outside thereof; and a reflector provided at a position opposite to the second heating member with the halogen lamp interposed therebetween and having a reflective surface configured to reflect heat received from the halogen lamp toward the second heating member, the reflector forming a guiding section configured to be in sliding contact with the sheet being conveyed so as to guide the sheet to the nip portion, the guiding section being heated by the halogen lamp.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: March 27, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Hiroyuki Tsuchihashi, Kikuo Mizutani, Hidetoshi Yokochi, Isao Yahata, Takahiro Kawaguchi, Yoshiaki Sugizaki, Hiroyuki Taki, Ken Iguchi, Chiaki Iizuka
  • Patent number: 9908357
    Abstract: In accordance with one embodiment, a decoloring apparatus comprises a processor, a decoloring section, a shift roller, a paper discharge section and a paper discharge roller. The processor determines whether or not to execute either a decoloring job or a non-decoloring job. The decoloring section decolors an image on paper formed with decolorable coloring agent. The shift roller moves paper for decoloring job or paper for non-decoloring job in a direction orthogonal to a paper discharge direction of the paper on a same plane for a given distance to sort it. The paper discharge section stacks discharged papers. The paper discharge roller discharges the paper sorted by the shift roller to the paper discharge section.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: March 6, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Isao Yahata
  • Patent number: 9835998
    Abstract: In accordance with an embodiment, a sheet processing apparatus comprises a decoloring section, a stacking section, an image forming section, a sheet feed roller and a combined roller. The decoloring section carries out a decoloring processing on a sheet. The sheet subjected to the decoloring processing is discharged to the stacking section. The image forming section carries out an image forming processing on the sheet fed from the stacking section. The sheet feed roller feeds a sheet stacked in the stacking section to a conveyance path through which the sheet is fed to the image forming section. The combined roller aligns the sheets to be discharged to the stacking section at a reference position in a conveyance direction in which the sheets are conveyed to the sheet feed roller, and feeds the sheets stacked in the stacking section to the sheet feed roller along the conveyance direction.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 5, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kikuo Mizutani, Ken Iguchi, Isao Yahata, Hiroyuki Sugiyama