Patents by Inventor Junya Akatsuka

Junya Akatsuka 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).

  • Publication number: 20190354058
    Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Inventors: Junya Akatsuka, Masaki Tanaka
  • Patent number: 10416603
    Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: September 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Akatsuka, Masaki Tanaka
  • Patent number: 10259672
    Abstract: An image forming apparatus for forming an image on a sheet includes an image forming unit, a first pair of rollers, a second pair of rollers, and a holder. The image forming unit is configured to form an image on a sheet. The first pair of rollers is configured to discharge the sheet out of the apparatus, the image having been formed on a first surface of the sheet by the image forming unit. The second pair of rollers is configured to convey the sheet again to the image forming unit to form an image on a second surface of the sheet opposite to the first surface. The holder is configured to hold one of the first pair of rollers and one of the second pair of rollers.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 16, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junya Akatsuka, Masaki Tanaka
  • Publication number: 20170248891
    Abstract: An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 31, 2017
    Inventors: Junya Akatsuka, Masaki Tanaka
  • Publication number: 20160342126
    Abstract: An image forming apparatus for forming an image on a sheet includes an image forming unit, a first pair of rollers, a second pair of rollers, and a holder. The image forming unit is configured to form an image on a sheet. The first pair of rollers is configured to discharge the sheet out of the apparatus, the image having been formed on a first surface of the sheet by the image forming unit. The second pair of rollers is configured to convey the sheet again to the image forming unit to form an image on a second surface of the sheet opposite to the first surface. The holder is configured to hold one of the first pair of rollers and one of the second pair of rollers.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 24, 2016
    Inventors: Junya Akatsuka, Masaki Tanaka
  • Patent number: 9229429
    Abstract: An image forming apparatus heats and fixes a toner image on a recording material, discharges and cools the recording material, and prevents the heated and fixed toner image on the recording material from being melted. The apparatus also has a conveying portion that is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Akatsuka, Masaki Tanaka, Daisuke Aoki
  • Patent number: 9024984
    Abstract: The present invention provides a sheet feeder, including: a support member which can be rotated around a pivot at upstream side thereof in a sheet feeding direction and supports sheets; a driving unit rotating the support member upwardly; a feeding portion feeding the sheets; a first detection unit detecting the sheets on the support member at a first detection position above the support member; a second detection unit detecting the sheets on the support member at a second detection position located at upstream of the first detection position and below the first detection position; and a stacking amount determining portion determining a stacking amount of the sheets on the support member, based on a period of time between a time when the second detection unit detects the sheets and a time when the first detection unit detects the sheets while the support member is upwardly rotated by the driving unit.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: May 5, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Akatsuka, Daisuke Aoki, Atsushi Murakami
  • Publication number: 20140294474
    Abstract: With the present invention, an image forming apparatus is prevented in which a recording material on which a toner image is heated and fixed and which is discharged is cooled, and the toner image heated and fixed onto the recording material is prevented from being melted. Further, a conveying portion is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion. An air-blowing duct is provided to guide external air to the recording material conveyed by a discharge roller and a discharge driven roller provided at a downstream side of a fixing device, and a blowing port of the air-blowing duct is open at a position avoiding the discharge roller and the discharge driven roller.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Junya Akatsuka, Masaki Tanaka, Daisuke Aoki