Patents by Inventor Tetsuhiro Nitta

Tetsuhiro Nitta 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: 9896298
    Abstract: A sheet is cut between a first conveying unit and a second conveying unit in a state in which the first and second conveying units halt and in which an upstream conveying unit conveys the sheet at a first speed; after the sheet is cut, the first conveying unit conveys the sheet at a second speed higher than the first speed to reduce a slack formed during the halting; after the sheet is cut, the second conveying unit conveys the downstream-side sheet at a third speed higher than the first speed; if the third conveying unit is nipping the sheet during cutting, the third conveying unit conveys the sheet at the third speed; and if the third conveying unit is not nipping the sheet, the third conveying unit conveys the sheet at the third speed or a fourth speed after the detecting unit detects the sheet.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: February 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahito Yoshida, Tetsuhiro Nitta, Kota Uchida, Takayuki Okamoto
  • Publication number: 20160046459
    Abstract: A sheet is cut between a first conveying unit and a second conveying unit in a state in which the first and second conveying units halt and in which an upstream conveying unit conveys the sheet at a first speed; after the sheet is cut, the first conveying unit conveys the sheet at a second speed higher than the first speed to reduce a slack formed during the halting; after the sheet is cut, the second conveying unit conveys the downstream-side sheet at a third speed higher than the first speed; if the third conveying unit is nipping the sheet during cutting, the third conveying unit conveys the sheet at the third speed; and if the third conveying unit is not nipping the sheet, the third conveying unit conveys the sheet at the third speed or a fourth speed after the detecting unit detects the sheet.
    Type: Application
    Filed: October 29, 2015
    Publication date: February 18, 2016
    Inventors: Masahito Yoshida, Tetsuhiro Nitta, Kota Uchida, Takayuki Okamoto
  • Patent number: 8824953
    Abstract: A device includes a winding rotary member having a cylindrical shape; a holder having a rotating member, which is provided in the vicinity of a cylindrical surface of the winding rotary member, capable of nipping and conveying the sheet; a first driving mechanism configured to rotate the winding rotary member; and a second driving mechanism configured to rotate the rotating member. The winding rotary member rotates with the sheet is nipped with the rotatable holder, whereby the sheet is wound around the winding rotary member.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kota Uchida, Manabu Kanazawa, Masahito Yoshida, Tetsuhiro Nitta, Takayuki Okamoto
  • Patent number: 8750780
    Abstract: A decurling unit regulates a decurling force so as to be smaller when a sheet is returned from a printing unit to a sheet feeding unit than when the sheet is fed from the sheet feeding unit to the printing unit.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: June 10, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Izumi, Tetsuhiro Nitta, Ryosuke Sato, Kenji Shigeno
  • Patent number: 8734037
    Abstract: An apparatus may include a print head, multiple roller pairs to convey a sheet, a direct sensor, and a control unit. The print head prints on a conveyed sheet. The multiple roller pairs nip the sheet at an upstream side of the print head to convey the sheet, nip the sheet at a downstream side of the print head, and nip the sheet at an upstream side of a first roller pair to convey the sheet. The direct sensor measures a surface of the conveyed sheet at a measurement position between a nip position of the first roller pair and a nip position of a third roller pair to obtain information relating to a movement state of the sheet. The control unit controls to correct at least one of driving control of the print head and conveying control of the sheet, based on the information obtained by the direct sensor.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichiro Kawaguchi, Toshiki Takeuchi, Kengo Nieda, Tetsuhiro Nitta
  • Patent number: 8540360
    Abstract: An apparatus for performing duplex printing having a sheet feeding unit, a printing unit, a cutter unit, a drying unit, and a reverse unit. In the duplex printing, the printing unit prints a plurality of images on a first surface of a sheet fed from the sheet feeding unit. The sheet is a continuous sheet. The sheet printed on the first surface passes through the drying unit and is led to the reverse unit. The reverse unit feeds the reversed sheet to the printing unit and the printing unit prints a plurality of images on a second surface that is a back of the first surface of the sheet fed from the reverse unit. The cutter unit cuts the sheet printed on the second surface into a plurality of cut sheets each having the image printed thereon. The cut sheets pass through the drying unit and are ejected.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 24, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuhiro Nitta, Yasuhiko Ikeda, Masahito Yoshida, Kota Uchida
  • Patent number: 8538316
    Abstract: With front face printing, the sheet fed from a sheet feeding unit is led into a nipped position between a first pinch roller and a decurling roller from a first direction, and is discharged by decurling force being applied thereto at the decurling roller. On the other hand, the sheet fed from a reverse unit is led into the nipped position from a second direction opposite to the first direction, and is discharged by decurling force being applied thereto at the decurling roller.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Shigeno, Tetsuhiro Nitta, Masato Izumi, Ryosuke Sato
  • Patent number: 8523305
    Abstract: An apparatus includes a printing unit which is disposed in a housing and configured to form an image on a sheet, an lid attached to the housing by a hinge mechanism, and a camera which is attached to the lid and configured to read an image on a document while the lid is open, wherein the sheet having the image formed by the printing unit is discharged on the lid, and when the lid is opened, the camera can read the document which is placed at a reading position below the camera.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Saito, Masaaki Ishibashi, Daijirou Nagasaki, Tetsuhiro Nitta, Hiroshi Ogushi, Yasuhiko Ikeda, Shigeyuki Sugiyama, Haruyuki Yanagi, Takeji Niikura
  • Patent number: 8475066
    Abstract: An apparatus includes a reverse unit configured to wind a sheet printed at a print unit around the reverse unit and to reverse the sides of the sheet, and the reverse unit includes a winding rotary member having a cylindrical shape, and a skew correcting unit configured to correct skewing of sheets to be led into the winding rotary member.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: July 2, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Manabu Kanazawa, Tetsuhiro Nitta, Kota Uchida
  • Patent number: 8456714
    Abstract: An image forming apparatus includes a printing section, a flatbed scanner section configured to read an original on a reading surface, and a moving mechanism configured to change the angle of the reading surface relative to an installation plane on which the apparatus is installed. The scanner section is capable of performing reading in each of a first mode where the angle of the reading surface is a first angle (vertical) and a second mode where the angle of the reading surface is a second angle (horizontal) different from the first angle.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: June 4, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Ikeda, Haruyuki Yanagi, Masaaki Ishibashi, Kenichi Nishimura, Sakiko Takizawa, Naofumi Sekine, Hiroshi Ogushi, Takeji Niikura, Tetsuya Saito, Tetsuhiro Nitta, Shigeyuki Sugiyama
  • Patent number: 8376543
    Abstract: An apparatus includes a guide unit configured to guide surfaces of a sheet, which is conveyed after passing through a recording unit, with respect to a vertical direction, the guide unit having an interval variable in the vertical direction, and a correction mechanism for correcting skew of the sheet, which is inserted into the guide unit, by pushing the sheet from both sides thereof in a sheet width direction. The interval of the guide unit in the vertical direction widens when the sheet is cut compared with that when correction is executed by the correction mechanism, and when the sheet is cut, conveyance of the sheet is temporarily stopped in a position of the cutter. In cutting, a loop of the sheet is formed on the guide unit the interval of which in the vertical direction has widened.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: February 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuhiro Nitta
  • Patent number: 8366104
    Abstract: A device includes a conveying unit conveying a sheet, a guide, disposed downstream of the conveying unit in a conveying direction, guiding one side end of the conveyed sheet while being in contact with a side end, a feeding unit obliquely conveying the sheet closer to the guide, a pressing unit pressing the conveyed sheet in a direction in which the sheet moves away from the guide, and a control unit controlling the pressing unit and the feeding unit so that the feeding unit nips the pressed sheet to form a loop in the sheet between the conveying unit and the feeding unit and then conveys the sheet while the side end of the sheet is in sliding contact with the guide.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: February 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryosuke Sato, Kenji Shigeno, Masato Izumi, Tetsuhiro Nitta
  • Patent number: 8282206
    Abstract: A display unit includes a slide mechanism slidable in a lateral or vertical direction to a housing. A maintenance opening formed in the housing can be covered and uncovered. When the opening is uncovered, a user can access at least apart of a print section in the housing from the opening and perform maintenance.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: October 9, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruyuki Yanagi, Yasuhiko Ikeda, Hiroshi Ogushi, Tetsuya Saito, Takeji Niikura, Masaaki Ishibashi, Kenichi Nishimura, Tetsuhiro Nitta, Shigeyuki Sugiyama
  • Publication number: 20110239839
    Abstract: A sheet is cut between a first conveying unit and a second conveying unit in a state in which the first and second conveying units halt and in which an upstream conveying unit conveys the sheet at a first speed; after the sheet is cut, the first conveying unit conveys the sheet at a second speed higher than the first speed to reduce a slack formed during the halting; after the sheet is cut, the second conveying unit conveys the downstream-side sheet at a third speed higher than the first speed; if the third conveying unit is nipping the sheet during cutting, the third conveying unit conveys the sheet at the third speed; and if the third conveying unit is not nipping the sheet, the third conveying unit conveys the sheet at the third speed or a fourth speed after the detecting unit detects the sheet.
    Type: Application
    Filed: December 10, 2010
    Publication date: October 6, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masahito Yoshida, Tetsuhiro Nitta, Kota Uchida, Takayuki Okamoto
  • Publication number: 20110211897
    Abstract: A device includes a winding rotary member having a cylindrical shape; a holder having a rotating member, which is provided in the vicinity of a cylindrical surface of the winding rotary member, capable of nipping and conveying the sheet; a first driving mechanism configured to rotate the winding rotary member; and a second driving mechanism configured to rotate the rotating member. The winding rotary member rotates with the sheet is nipped with the rotatable holder, whereby the sheet is wound around the winding rotary member.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kota Uchida, Manabu Kanazawa, Masahito Yoshida, Tetsuhiro Nitta, Takayuki Okamoto
  • Publication number: 20110211889
    Abstract: A decurling unit regulates a decurling force so as to be smaller when a sheet is returned from a printing unit to a sheet feeding unit than when the sheet is fed from the sheet feeding unit to the printing unit.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Izumi, Tetsuhiro Nitta, Ryosuke Sato, Kenji Shigeno
  • Publication number: 20110210500
    Abstract: A device includes a conveying unit conveying a sheet, a guide, disposed downstream of the conveying unit in a conveying direction, guiding one side end of the conveyed sheet while being in contact with a side end, a feeding unit obliquely conveying the sheet closer to the guide, a pressing unit pressing the conveyed sheet in a direction in which the sheet moves away from the guide, and a control unit controlling the pressing unit and the feeding unit so that the feeding unit nips the pressed sheet to form a loop in the sheet between the conveying unit and the feeding unit and then conveys the sheet while the side end of the sheet is in sliding contact with the guide.
    Type: Application
    Filed: December 9, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Sato, Kenji Shigeno, Masato Izumi, Tetsuhiro Nitta
  • Publication number: 20110211896
    Abstract: An apparatus may include a print head, multiple roller pairs to convey a sheet, a direct sensor, and a control unit. The print head prints on a conveyed sheet. The multiple roller pairs nip the sheet at an upstream side of the print head to convey the sheet, nip the sheet at a downstream side of the print head, and nip the sheet at an upstream side of a first roller pair to convey the sheet. The direct sensor measures a surface of the conveyed sheet at a measurement position between a nip position of the first roller pair and a nip position of a third roller pair to obtain information relating to a movement state of the sheet. The control unit controls to correct at least one of driving control of the print head and conveying control of the sheet, based on the information obtained by the direct sensor.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koichiro Kawaguchi, Toshiki Takeuchi, Kengo Nieda, Tetsuhiro Nitta
  • Publication number: 20110211890
    Abstract: With front face printing, the sheet fed from a sheet feeding unit is led into a nipped position between a first pinch roller and a decurling roller from a first direction, and is discharged by decurling force being applied thereto at the decurling roller. On the other hand, the sheet fed from a reverse unit is led into the nipped position from a second direction opposite to the first direction, and is discharged by decurling force being applied thereto at the decurling roller.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kenji Shigeno, Tetsuhiro Nitta, Masato Izumi, Ryosuke Sato
  • Publication number: 20110211885
    Abstract: An apparatus includes a reverse unit configured to wind a sheet printed at a print unit around the reverse unit and to reverse the sides of the sheet, and the reverse unit includes a winding rotary member having a cylindrical shape, and a skew correcting unit configured to correct skewing of sheets to be led into the winding rotary member.
    Type: Application
    Filed: November 18, 2010
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Manabu Kanazawa, Tetsuhiro Nitta, Kota Uchida