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).
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Publication number: 20170087890Abstract: A cutter unit is attached to a carriage in a predetermined direction, the carriage moving in a cutting direction of a sheet. A first set of first fitting sections and a second set of second fitting sections are provided as groups of fitting sections provided at positions, which face each other, on the carriage and the cutter unit. The first fitting sections and the second fitting sections each of which are fitted to each other in a predetermined direction. When the cutter unit is attached to the carriage, the fitting of the first fitting sections starts before the fitting of the second fitting sections.Type: ApplicationFiled: September 22, 2016Publication date: March 30, 2017Inventors: Shuichi Masuda, Naoki Wakayama, Masakazu Nagashima, Daiki Anayama, Tetsuo Kikuchi, Takakazu Ohashi
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Patent number: 9539831Abstract: 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: GrantFiled: March 26, 2012Date of Patent: January 10, 2017Assignee: Canon Kabushiki KaishaInventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Patent number: 9487035Abstract: A printing apparatus includes a conveying unit, a printing unit, a cutting unit, and a control unit. 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. 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: GrantFiled: January 13, 2016Date of Patent: November 8, 2016Assignee: CANON KABUSHIKI KAISHAInventor: Naoki Wakayama
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Publication number: 20160214411Abstract: 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: ApplicationFiled: January 13, 2016Publication date: July 28, 2016Inventor: Naoki Wakayama
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Publication number: 20160207333Abstract: 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: ApplicationFiled: March 28, 2016Publication date: July 21, 2016Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Patent number: 9334137Abstract: 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: GrantFiled: February 4, 2014Date of Patent: May 10, 2016Assignee: Canon Kabushiki KaishaInventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Publication number: 20160090262Abstract: 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: ApplicationFiled: September 21, 2015Publication date: March 31, 2016Inventors: Naoki WAKAYAMA, Shuichi Masuda, Takakazu Ohashi, Ryohei Maruyama
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Patent number: 9227809Abstract: 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: GrantFiled: July 2, 2013Date of Patent: January 5, 2016Assignee: Canon Kabushiki KaishaInventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Patent number: 9126444Abstract: 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: GrantFiled: November 21, 2012Date of Patent: September 8, 2015Assignee: Canon Kabushiki KaishaInventor: Naoki Wakayama
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Patent number: 9004638Abstract: 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: GrantFiled: March 12, 2013Date of Patent: April 14, 2015Assignee: Canon Kabushiki KaishaInventors: Naoki Wakayama, Ryohei Maruyama
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Patent number: 8899853Abstract: 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: GrantFiled: July 24, 2012Date of Patent: December 2, 2014Assignee: Canon Kabushiki KaishaInventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Publication number: 20140239113Abstract: 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: ApplicationFiled: February 4, 2014Publication date: August 28, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Publication number: 20140008408Abstract: 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: ApplicationFiled: July 2, 2013Publication date: January 9, 2014Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Publication number: 20130257970Abstract: 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: ApplicationFiled: March 12, 2013Publication date: October 3, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Naoki Wakayama, Ryohei Maruyama
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Publication number: 20130026283Abstract: 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: ApplicationFiled: July 24, 2012Publication date: January 31, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Publication number: 20120263514Abstract: 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: ApplicationFiled: March 26, 2012Publication date: October 18, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
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Patent number: 4379248Abstract: 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: GrantFiled: May 4, 1979Date of Patent: April 5, 1983Assignees: Mitsubishi Denki Kabushiki Kaisha, Japan Atomic Energy Research InstituteInventors: Naoki Wakayama, Hideshi Yamagishi, Toshimasa Tomoda, Hiroji Tanaka