Patents by Inventor Kohei Deno

Kohei Deno 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: 20250123585
    Abstract: An image forming apparatus includes an apparatus body, an opening/closing unit, an image forming unit, a reversing unit configured to reverse the sheet, a detection unit configured to detect a position of the sheet in a sheet width direction orthogonal to a sheet conveyance direction, and a control unit configured to control the image forming unit based on a detection result of the detection unit. A conveyance path through which the sheet reversed by the reversing unit is conveyed toward the image forming unit is provided in the opening/closing unit. The detection unit is disposed on the conveyance path.
    Type: Application
    Filed: September 24, 2024
    Publication date: April 17, 2025
    Inventors: KOHEI DENO, TAKAHIRO ITO, KOHEI MIZUGUCHI, TAKURO YOSHIKAWA, YUTA SUZUKI, YUKINOJO TODA, IKU SHIMIZU, YUYA HAMAJI
  • Publication number: 20250004407
    Abstract: An image forming apparatus includes a sheet supporting unit, a sheet feeding member, an image forming unit, a sheet conveyance unit, a detection unit, and a control unit. The control unit executes a first processing and a second processing. In the first processing, the control unit controls the image forming unit such that a position at which the image forming unit forms an image on a sheet of which the detection unit detects the position is adjusted. In the second processing, the control unit controls the image forming unit such that a position at which the image forming unit forms an image on a subsequent sheet is adjusted. When a state change operation that changes a feeding state at time of feeding the sheet occurs, the control unit executes the first processing. When the state change operation does not occur, the control unit executes the second processing.
    Type: Application
    Filed: June 17, 2024
    Publication date: January 2, 2025
    Inventor: KOHEI DENO
  • Publication number: 20240255888
    Abstract: An image forming apparatus includes a re-conveyance portion to reverse a sheet on which a first toner image is transferred on a first surface by a transfer portion and to convey the sheet to the transfer portion again, and first and second detecting portions to detect positions in a widthwise direction of the sheet. The first detecting portion detects a first detecting position before the first toner image is transferred to first surface and the second detecting portion detects a second detecting position after the first toner image is transferred and before a second toner image is transferred on a second surface. A controller determines a first image forming position where a latent image is formed on a photosensitive member before the first detecting position is detected and determines a second image forming position based on the first image forming position, and the first and second detecting positions.
    Type: Application
    Filed: January 31, 2024
    Publication date: August 1, 2024
    Inventor: KOHEI DENO
  • Patent number: 11603278
    Abstract: An image forming apparatus includes a controller to move a sheet, in an image formation process on a first surface, to a standard position in a width direction and move the sheet, in an image formation process on a second surface, in the width direction based on a detected position in a case where a difference between the standard position and a first position in the width direction is equal to or smaller than a predetermined value. The controller moves the sheet, in the image formation process on the first surface, by the predetermined value in the width direction and moves the sheet, in the image formation process on the second surface, in the width direction based on detected positions in a case where the difference between the standard position and the first position in the width direction is larger than the predetermined value.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: March 14, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kohei Deno
  • Patent number: 11586129
    Abstract: An image forming apparatus includes an image forming portion to form an image on an image bearing member, and a transfer portion to transfer the image on a first image position on the image bearing member to a sheet. In addition, a controller determines a second image position, on the image bearing member, of an image to be transferred onto a second surface of a sheet re-conveyed to an adjustment portion by a reverse and re-conveyance portion based on a detected side edge position, of a trailing part of the sheet being conveyed with a first end as the leading edge. The trailing part of the sheet is positioned on a trailing edge side further than a center position, in the sheet conveyance direction, of the sheet, and the controller determines a shift amount based on the second image position and detected side edge position of the sheet, which has been re-conveyed, being conveyed with the second end as the leading edge.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: February 21, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Patent number: 11247859
    Abstract: An image forming apparatus is configured such that in a case where images are to be formed on a first surface of a preceding sheet, on a first surface of a succeeding sheet fed to the first conveyance path succeeding to the preceding sheet and on a second surface of the preceding sheet, a first conveyance member is stopped without reversing the preceding sheet to a second conveyance path in a case where the image has been formed on the first surface of the preceding sheet and permission of preparing the image to be formed on the first surface of the succeeding sheet is not issued yet. The first conveyance member restarts conveyance of the preceding sheet to the second conveyance path based on timing when an image forming unit starts preparing the image to be formed on the first surface of the succeeding sheet.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: February 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Patent number: 10642211
    Abstract: A first conveyance member reverses a sheet received from a first conveyance path. Second through fourth conveyance members are disposed on a second conveyance path and convey a sheet from the first conveyance member toward the first conveyance path. A restriction portion is capable of restricting driving force of a first driving source from acting on a sheet through the second conveyance member. A controller executes a first operation and a second operation. In the first operation, a second driving source stops driving the third and fourth conveyance members while a first sheet is being nipped at the fourth conveyance member, and a second sheet is conveyed to be abutted with the third conveyance member. In the second operation, the second driving source starts driving the third and fourth conveyance members while the restriction portion restricts driving force of the first driving source from acting on the second sheet.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 5, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Publication number: 20200024093
    Abstract: An image forming apparatus includes a controller to move a sheet, in an image formation process on a first surface, to a standard position in a width direction and move the sheet, in an image formation process on a second surface, in the width direction based on a detected position in a case where a difference between the standard position and a first position in the width direction is equal to or smaller than a predetermined value. The controller moves the sheet, in the image formation process on the first surface, by the predetermined value in the width direction and moves the sheet, in the image formation process on the second surface, in the width direction based on detected positions in a case where the difference between the standard position and the first position in the width direction is larger than the predetermined value.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 23, 2020
    Inventor: Kohei Deno
  • Publication number: 20200002112
    Abstract: An image forming apparatus is configured such that in a case where images are to be formed on a first surface of a preceding sheet, on a first surface of a succeeding sheet fed to the first conveyance path succeeding to the preceding sheet and on a second surface of the preceding sheet, a first conveyance member is stopped without reversing the preceding sheet to a second conveyance path in a case where the image has been formed on the first surface of the preceding sheet and permission of preparing the image to be formed on the first surface of the succeeding sheet is not issued yet, and the first conveyance member restarts conveyance of the preceding sheet to the second conveyance path based on timing when an image forming unit starts preparing the image to be formed on the first surface of the succeeding sheet.
    Type: Application
    Filed: June 7, 2019
    Publication date: January 2, 2020
    Inventor: Kohei Deno
  • Patent number: 10466637
    Abstract: An image forming apparatus includes an image bearing member and an image forming portion configured to form first and second toner images on the image bearing member. A control portion controls the image forming portion such that a first toner image is formed on a first image position of the image bearing member, and a second toner image is formed on a second image position of the image bearing member. The sheet moves to a first sheet position corresponding to the first image position based on a first detection position before the first toner image is transferred onto a first surface of the sheet and moves, after being inverted, to a second sheet position corresponding to the second image position based on a second detection position before the second toner image is transferred onto a second surface of the sheet.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Patent number: 10442645
    Abstract: An image forming apparatus includes a control portion configured to control, based on a detection position of a sheet in a width direction, in a case where a center of an image formed on a first surface at an image forming portion in the width direction is displaced from a center of the sheet in the width direction at the image forming position and an image is to be formed on a second surface of the sheet, a moving portion to move the sheet in the width direction such that a position of the center of the sheet on a conveyance path in the width direction at the sheet forming position when the image is formed on the first surface and a position of a center of the sheet on the conveyance path in the width direction at the sheet forming position when the image is formed on the second surface coincide.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: October 15, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Publication number: 20190121274
    Abstract: An image forming apparatus includes an image bearing member and an image forming portion configured to form first and second toner images on the image bearing member. A control portion controls the image forming portion such that a first toner image is formed on a first image position of the image bearing member, and a second toner image is formed on a second image position of the image bearing member. The sheet moves to a first sheet position corresponding to the first image position based on a first detection position before the first toner image is transferred onto a first surface of the sheet and moves, after being inverted, to a second sheet position corresponding to the second image position based on a second detection position before the second toner image is transferred onto a second surface of the sheet.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventor: Kohei Deno
  • Publication number: 20190072893
    Abstract: A first conveyance member reverses a sheet received from a first conveyance path. Second through fourth conveyance members are disposed on a second conveyance path and convey a sheet from the first conveyance member toward the first conveyance path. A restriction portion is capable of restricting driving force of a first driving source from acting on a sheet through the second conveyance member. A controller executes a first operation and a second operation. In the first operation, a second driving source stops driving the third and fourth conveyance members while a first sheet being nipped at the fourth conveyance member, and a second sheet is conveyed to be abutted with the third conveyance member. In the second operation, the second driving source starts driving the third and fourth conveyance members while the restriction portion restricting driving force of the first driving source from acting on the second sheet.
    Type: Application
    Filed: August 23, 2018
    Publication date: March 7, 2019
    Inventor: Kohei Deno
  • Patent number: 10197961
    Abstract: An image forming apparatus including an image bearing member, an image forming portion, a transfer portion, a moving portion, a re-conveyance portion, a detection portion, a detection portion, and a control portion is provided. The moving portion includes a sheet in a width direction, and the re-conveyance portion inverts the sheet bearing a toner image transferred onto a first surface thereof and conveys the sheet to the transfer portion again. The control portion controls the image forming portion to form the toner image for the first surface on a first image position and a toner image for a second surface on a second image position and controls the moving portion to move the sheet to a position corresponding to the first image position or the second image position.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: February 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Deno
  • Publication number: 20170235254
    Abstract: An image forming apparatus includes an image forming portion, a transfer portion, an adjustment portion, a detection portion, a reverse and re-conveyance portion, and a controller configured to determine a second image position, on the image bearing member, of an image to be transferred onto a second surface of the sheet re-conveyed by the reverse and re-conveyance portion based on a side edge position, detected by the detection portion, of a trailing part of the sheet being conveyed with the first end as the leading edge, the controller being also configured to determine a shift amount by which the adjustment portion shifts the sheet re-conveyed by the reverse and re-conveyance portion based on the second image position and a side edge position, detected by the detection portion, of the sheet, which has been re-conveyed by the reverse and re-conveyance portion, being conveyed with the second end as the leading edge.
    Type: Application
    Filed: February 9, 2017
    Publication date: August 17, 2017
    Inventor: Kohei Deno
  • Publication number: 20170235265
    Abstract: An image forming apparatus including an image bearing member, an image forming portion, a transfer portion, a moving portion, a re-conveyance portion, a detection portion, a detection portion, and a control portion is provided. The moving portion is configured to move a sheet in a width direction. The re-conveyance portion is configured to invert the sheet bearing a toner image transferred onto a first surface thereof and convey the sheet to the transfer portion again. The control portion is configured to control the image forming portion to form the toner image for the first surface on a first image position and a toner image for a second surface on a second image position and control the moving portion to move the sheet to a position corresponding to the first image position or the second image position. The first and second image positions are displaced from each other.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 17, 2017
    Inventor: Kohei Deno
  • Publication number: 20170235269
    Abstract: An image forming apparatus including an image forming portion, a moving portion, a re-conveyance portion, a detection portion, and a control portion is provided. The image forming portion is configured to form an image on a sheet that is conveyed. The moving portion is configured to move the sheet in a width direction. The re-conveyance portion is configured to invert the sheet having the image formed on a first surface thereof convey the sheet to the image forming portion again. The control portion is configured to control, based on a detection result of the detection portion, the moving portion to move the sheet in the width direction such that the center of the image formed on the first surface in the width direction and a center of the image to be formed on the second surface in the width direction coincide.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 17, 2017
    Inventor: Kohei Deno
  • Patent number: 9581928
    Abstract: According to the present disclosure, an image forming apparatus for minimizing a shift amount of the registration roller for the first and subsequent sheets is provided. The image forming apparatus forms an image on a sheet conveyed on a conveying path. The image forming apparatus includes an exposure device. Further, the image forming apparatus includes a pair of registration rollers 110 configured to convey the sheet in a conveying direction with the sheet nipped by the pair of the registration rollers, and a detection unit configured to detect the side edge position in the width direction of the sheet conveyed. The control unit 200 of the image forming apparatus determines the image writing position for the first sheet, and controls the image writing of the exposure device based on the detection result of the CIS 141 for the first sheet.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: February 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kohei Deno
  • Patent number: 9340385
    Abstract: A skew correction apparatus includes a first roller pair configured to nip a sheet to convey the sheet, a second roller pair provided upstream of the first roller pair and configured to nip the sheet and convey the sheet, a contact portion provided downstream of the first roller pair and configured to come in contact with a leading edge of the sheet conveyed with the first roller pair to correct a skew of the sheet, and a separation mechanism configured to set the second roller pair to a separated state before the skew of the sheet conveyed downstream with the first roller pair is corrected.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: May 17, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kohei Deno
  • Patent number: 9329554
    Abstract: A sheet conveying apparatus includes first and second conveyance roller pairs, a width-direction shifting unit, first and second drive units, and a control unit. The second conveyance roller pair is arranged downstream of the first conveyance roller pair to nip and convey the sheet conveyed by the first conveyance roller pair, and to bend the sheet. The width-direction shifting unit shifts the sheet nipped by the second conveyance roller pair in a width direction by shifting the second conveyance roller pair in the width direction. The control unit controls the first and second drive units so that a circumferential speed of the first conveyance roller pair is made higher than that of the second conveyance roller pair between when the second conveyance roller pair starts conveying the sheet and when the width-direction shifting unit completes shifting the second conveyance roller pair in the width direction.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 3, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kohei Deno