Patents by Inventor Naoki Wakayama

Naoki Wakayama 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: 20160214411
    Abstract: A printing apparatus comprising: a conveying unit; a printing unit; a cutting unit; and a control unit, wherein in a case in which a marginless image is to be printed, if the margin portion is added on a trailing edge side of an image before the marginless image, the control unit performs control of printing the marginless image next to the margin portion, and if the margin portion is not added on the trailing edge side of the image before the marginless image, the control unit performs control of providing a margin portion of more than the predetermined length before the marginless image.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 28, 2016
    Inventor: Naoki Wakayama
  • Publication number: 20160207333
    Abstract: A print apparatus has a supporting section for supporting a roll of a continuous sheet, a driving mechanism having a motor for rotating the roll supported by the supporting section, a detection unit configured to detect a rotation state of the roll supported by the supporting section, a conveyance roller for conveying the continuous sheet drawn out from the roll and a print unit configured to form an image on the continuous sheet conveyed by the conveyance roller. A control unit is configured to obtain information indicating a moment of inertia of the roll supported by the supporting section based on detected values of the detection unit and to adjust a driving torque of the motor based on the obtained information, intermittently during printing.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 9334137
    Abstract: There are provided a roll sheet conveying apparatus and a sheet conveying control method wherein it is possible to control motor driving for conveying a roll sheet at appropriate timing to keep constant the tension of the sheet to be conveyed without performing a special identifying operation. For this feature, a relationship between friction load torque on the roll sheet and the mass of the roll sheet is previously stored in a storing unit, whereby the moment of inertia of the roll sheet can be detected at appropriate timing during printing. As a result, the optimum tension of the sheet to be conveyed can be maintained by appropriately adjusting the driving control of a sheet feeding motor and a conveying motor without performing a special identifying operation.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 10, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20160090262
    Abstract: There is provided a stacking apparatus capable of stably conveying and stacking sheets without occurrence of damage or buckling of the sheets in the structure of discharging the curled sheets one by one. In regard to each of a plurality of clamp guides which project toward stacking trays from conveyance means to guide sheets S, the projecting position varies in accordance with a size and an amount of stacked sheets Sa on the stack trays. The stacking tray comprises an inclined surface and a curved surface. An upper guide is located to face the inclined surface by a predetermined interval, and the upper guide is located not to face the curved surface or is located to face it by an interval larger than a predetermined interval.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 31, 2016
    Inventors: Naoki WAKAYAMA, Shuichi Masuda, Takakazu Ohashi, Ryohei Maruyama
  • Patent number: 9227809
    Abstract: A conveyance apparatus includes a feeding unit, on which a roll sheet is settable, configured to feed the roll sheet, a conveyance roller configured to convey a sheet fed from the feeding unit, a first detection unit configured to detect a conveyance distance of the sheet conveyed by the conveyance roller, a second detection unit configured to detect a conveyance distance of the sheet drawn out from the roll sheet set on the feeding unit, a driving unit configured to synchronously drive the feeding unit when the sheet is conveyed by the conveyance roller, and a determination unit configured to determine a state of an end portion of the roll sheet based on detection results by the first detection unit and the second detection unit.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 9126444
    Abstract: A reading apparatus includes a reading unit including a presser configured to press a sheet, a carriage configured to hold a sensor unit and to move on the presser, and a housing configured to store the sensor unit and the carriage and to hold the presser in a displaceable way. The reading apparatus further includes a movement mechanism configured to move the reading unit to a first position in which the presser presses a supporting surface and to a second position in which the pressing is released. The movement mechanism sets the reading unit to the first position during reading by the sensor unit and to the second position during movement of the sheet on the supporting surface.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Naoki Wakayama
  • Patent number: 9004638
    Abstract: The present invention provides a color measuring apparatus and a printing apparatus that enable the user to easily keep a backing plate. A color measuring apparatus includes a holder on which a backing plate is capable of being attached, the backing plate having a white portion and a black portion, and a sensor for measuring color patterns on a sheet on the backing plate. Either one of the white portion and the black portion faces the sensor, depending on the attached state of the backing plate on the holder.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 14, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Wakayama, Ryohei Maruyama
  • Patent number: 8899853
    Abstract: A conveyance apparatus includes: a supply unit rotatably supporting a roll member around which a sheet is wound in form of a roll and configured to supply the sheet from the roll member; a motor for rotating the roll member; a roller pair configured to convey the sheet supplied from the supply unit while pinching the sheet; and a control unit configured to set the torque of the motor according to sheet information related to the sheet when taking up the sheet on the roll member by driving the motor while the sheet is pinched by the roller pair being stopped.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: December 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20140239113
    Abstract: There are provided a roll sheet conveying apparatus and a sheet conveying control method wherein it is possible to control motor driving for conveying a roll sheet at appropriate timing to keep constant the tension of the sheet to be conveyed without performing a special identifying operation. For this feature, a relationship between friction load torque on the roll sheet and the mass of the roll sheet is previously stored in a storing unit, whereby the moment of inertia of the roll sheet can be detected at appropriate timing during printing. As a result, the optimum tension of the sheet to be conveyed can be maintained by appropriately adjusting the driving control of a sheet feeding motor and a conveying motor without performing a special identifying operation.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 28, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20140008408
    Abstract: A conveyance apparatus includes a feeding unit, on which a roll sheet is settable, configured to feed the roll sheet, a conveyance roller configured to convey a sheet fed from the feeding unit, a first detection unit configured to detect a conveyance distance of the sheet conveyed by the conveyance roller, a second detection unit configured to detect a conveyance distance of the sheet drawn out from the roll sheet set on the feeding unit, a driving unit configured to synchronously drive the feeding unit when the sheet is conveyed by the conveyance roller, and a determination unit configured to determine a state of an end portion of the roll sheet based on detection results by the first detection unit and the second detection unit.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20130257970
    Abstract: The present invention provides a color measuring apparatus and a printing apparatus that enable the user to easily keep a backing plate. A color measuring apparatus includes a holder on which a backing plate is capable of being attached, the backing plate having a white portion and a black portion, and a sensor for measuring color patterns on a sheet on the backing plate. Either one of the white portion and the black portion faces the sensor, depending on the attached state of the backing plate on the holder.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 3, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoki Wakayama, Ryohei Maruyama
  • Publication number: 20130026283
    Abstract: A conveyance apparatus includes: a supply unit rotatably supporting a roll member around which a sheet is wound in form of a roll and configured to supply the sheet from the roll member; a motor for rotating the roll member; a roller pair configured to convey the sheet supplied from the supply unit while pinching the sheet; and a control unit configured to set the torque of the motor according to sheet information related to the sheet when taking up the sheet on the roll member by driving the motor while the sheet is pinched by the roller pair being stopped.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 31, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20120263514
    Abstract: This invention has been made to cause a printing apparatus for conveying roll paper and performing printing to simultaneously attain a stable conveyance accuracy and prevent skewed conveyance independently of LF roller driving conditions and disturbance conditions that variously change as the roll paper state changes. For this purpose, a feed motor is used as a load generator for the roll paper. A section from a conveyance operation by the LF roller to the next conveyance operation is divided into a plurality of sub-sections. A feed mechanism is controlled by switching between a feeder load generation section and a feeder load zero section for each sub-section.
    Type: Application
    Filed: March 26, 2012
    Publication date: October 18, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 4379248
    Abstract: An ionization chamber comprises a plurality of cylindrical electrodes which are coaxially arranged, and a casing which holds the cylindrical electrodes in it under the condition allowing the axial shifting of the edges of the cylindrical electrodes but preventing the radial shifting of the cylindrical electrodes whereby the slight relative deviation of parts for the ionization chamber can be minimized during use at high temperature or during a severe thermal cycle.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: April 5, 1983
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Japan Atomic Energy Research Institute
    Inventors: Naoki Wakayama, Hideshi Yamagishi, Toshimasa Tomoda, Hiroji Tanaka