Patents by Inventor Haruo Ishizuka
Haruo Ishizuka 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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Patent number: 9670026Abstract: A reading apparatus includes a reading unit configured to read a document, a feeding tray on which the document to be read by the reading unit is stacked, a feeding roller that feeds the document from the feeding tray to a position where the document is read by the reading unit, a feeding pressure plate that presses the document against the feeding roller so that the document is pinched between the feeding roller and the feeding pressure plate, and a discharge roller that discharges the document read by the reading unit to underneath the feeding pressure plate, wherein a position of the discharge roller moves depending on a number of documents pinched between the feeding roller and the feeding pressure plate.Type: GrantFiled: February 29, 2016Date of Patent: June 6, 2017Assignee: Canon Kabushiki KaishaInventors: Hikaru Watanabe, Masahiro Kawanishi, Takashi Awai, Toshihide Wada, Makoto Takemura, Haruo Ishizuka
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Patent number: 9538032Abstract: A simple configuration is used to reduce an impact applied to a reading sensor when the open/close unit is opened/closed. A back face CIS unit is retained to be movable with regard to a pressure plate so that the back face CIS unit can have a corrected posture when the pressure plate is closed.Type: GrantFiled: August 6, 2015Date of Patent: January 3, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Haruo Ishizuka, Masahiro Kawanishi, Kuniaki Sato, Toshihide Wada, Kazuyuki Morinaga, Makoto Takemura
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Publication number: 20160257517Abstract: A reading apparatus includes a reading unit configured to read a document, a feeding tray on which the document to be read by the reading unit is stacked, a feeding roller that feeds the document from the feeding tray to a position where the document is read by the reading unit, a feeding pressure plate that presses the document against the feeding roller so that the document is pinched between the feeding roller and the feeding pressure plate, and a discharge roller that discharges the document read by the reading unit to underneath the feeding pressure plate, wherein a position of the discharge roller moves depending on a number of documents pinched between the feeding roller and the feeding pressure plate.Type: ApplicationFiled: February 29, 2016Publication date: September 8, 2016Inventors: Hikaru Watanabe, Masahiro Kawanishi, Takashi Awai, Toshihide Wada, Makoto Takemura, Haruo Ishizuka
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Patent number: 9369598Abstract: A reading apparatus includes an auto document feeder configured to be openable and closable around a hinge with respect to a unit including an image sensor. The auto document feeder includes a roller configured to move a document relative to the image sensor, a motor, a gear train configured to transmit a rotation of a rotational shaft of the motor to the roller, and an encoder unit configured to detect rotation information of the motor, and including a sensor and a code wheel. An orientation of the rotational shaft is substantially parallel to a rotational axis of the hinge, and the gear train is arrayed in a direction of an extension of the rotational shaft. A gear that is a part of the gear train is attached to one end of the rotational shaft, and the code wheel is attached to the other end thereof.Type: GrantFiled: January 28, 2013Date of Patent: June 14, 2016Assignee: Canon Kabushiki KaishaInventors: Akihiro Tomoda, Masahiro Kawanishi, Takashi Awai, Tadashi Hanabusa, Haruo Ishizuka
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Publication number: 20160057300Abstract: A simple configuration is used to reduce an impact applied to a reading sensor when the open/close unit is opened/closed. A back face CIS unit is retained to be movable with regard to a pressure plate so that the back face CIS unit can have a corrected posture when the pressure plate is closed.Type: ApplicationFiled: August 6, 2015Publication date: February 25, 2016Inventors: Haruo Ishizuka, Masahiro Kawanishi, Kuniaki Sato, Toshihide Wada, Kazuyuki Morinaga, Makoto Takemura
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Patent number: 9132670Abstract: Provided are an image scanning device that can prevent a rise in the temperature and overloading or overheating of a conveying motor during continuous conveying of document sheets, and a conveying device that includes the image scanning device. According to the present invention, the temperature of a drive motor and the temperature of the periphery of the drive motor are predicted, and based on the predicted values, the conveying mode is selected.Type: GrantFiled: December 14, 2012Date of Patent: September 15, 2015Assignee: Canon Kabushiki KaishaInventors: Haruo Ishizuka, Masahiro Kawanishi, Takashi Awai, Tadashi Hanabusa, Akihiro Tomoda
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Patent number: 9124747Abstract: An image reading device includes: a sensor unit; a first reading part at which the sensor unit reads a document through a first transparent member; a second reading part at which the sensor unit reads a document through a second transparent member different from the first transparent member; and a color reference, wherein measurement of the color reference is able to be performed through the first transparent member by the sensor unit for calibration for reading at the first reading part, and measurement of the color reference is able to be performed through the second transparent member by the sensor unit for calibration for reading at the second reading part.Type: GrantFiled: July 23, 2014Date of Patent: September 1, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Masahiro Kawanishi, Hikaru Watanabe, Haruo Ishizuka, Takashi Awai, Toshihide Wada, Makoto Takemura
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Publication number: 20150055198Abstract: An image reading device includes: a sensor unit; a first reading part at which the sensor unit reads a document through a first transparent member; a second reading part at which the sensor unit reads a document through a second transparent member different from the first transparent member; and a color reference, wherein measurement of the color reference is able to be performed through the first transparent member by the sensor unit for calibration for reading at the first reading part, and measurement of the color reference is able to be performed through the second transparent member by the sensor unit for calibration for reading at the second reading part.Type: ApplicationFiled: July 23, 2014Publication date: February 26, 2015Inventors: Masahiro Kawanishi, Hikaru Watanabe, Haruo Ishizuka, Takashi Awai, Toshihide Wada, Makoto Takemura
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Patent number: 8964197Abstract: A reading apparatus includes an image sensor, a movement mechanism including a motor that relatively moves between a document and the image sensor, an encoder that detects information about the relative movement, and a control unit that controls driving of the motor and reading by the image sensor based on the detection by the encoder, wherein when a read-suspension event occurs during the reading, the control unit performs control such that the reading is continued while decelerating the motor, a relative position of a last read pixel with respect to a read position by the image sensor is monitored based on the detection by the encoder, and the driving of the motor is stopped when the read position is determined to reach a stop position set within the last read pixel, and the motor is driven again to resume the reading with a pixel next to the last read pixel.Type: GrantFiled: January 29, 2013Date of Patent: February 24, 2015Assignee: Canon Kabushiki KaishaInventors: Masahiro Kawanishi, Takashi Awai, Tadashi Hanabusa, Akihiro Tomoda, Haruo Ishizuka
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Patent number: 8922801Abstract: A reading apparatus includes an auto document feeder configured to be openable and closable around a hinge with respect to a unit including an image sensor. The auto document feeder includes a roller configured to move a document relative to the image sensor, a motor, a gear train configured to transmit a rotation of a rotational shaft of the motor to the roller, and an encoder unit configured to detect rotation information of the motor, and including a sensor and a code wheel. An orientation of the rotational shaft is substantially parallel to a rotational axis of the hinge, and the gear train is arrayed in a direction of an extension of the rotational shaft. A gear that is a part of the gear train is attached to one end of the rotational shaft, and the code wheel is attached to the other end thereof.Type: GrantFiled: January 28, 2013Date of Patent: December 30, 2014Assignee: Canon Kabushiki KaishaInventors: Akihiro Tomoda, Masahiro Kawanishi, Takashi Awai, Tadashi Hanabusa, Haruo Ishizuka
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Patent number: 8786917Abstract: A method includes a first step, a second step, and a third step. In the first step, a fed document is returned to an upstream side of a reading unit by reversing the document after a first passage through the reading unit. In the second step, the document returned in the first step is returned to the upstream side of the reading unit by reversing the document after a second passage through the reading unit. In the third step, the document returned in the second step is passed through the reading unit, and then the document is discharged.Type: GrantFiled: June 7, 2011Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventor: Haruo Ishizuka
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Patent number: 8760734Abstract: An image reading apparatus includes a sheet feeding unit configured to sequentially feed documents loaded on a document positioning plate, a reading sensor configured to read a document of the plurality of documents fed by the sheet feeding unit, an acquisition unit to acquire an interval of the document between a trailing edge of a preceding document and a leading edge of a next document conveyed through the conveyance path, and a reading unit to execute a first reading mode using the reading sensor to read the document conveyed at a first conveyance speed, and a second reading mode using the reading sensor to read the document conveyed at a second conveyance speed that is lower than the first conveyance speed, wherein the reading unit executes the second reading mode after the first reading mode when the interval of the document is less than a predetermined interval.Type: GrantFiled: January 3, 2013Date of Patent: June 24, 2014Assignee: Canon Kabushiki KaishaInventors: Kuniaki Sato, Masaya Shimmachi, Haruo Ishizuka
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Patent number: 8736915Abstract: An image reading recording apparatus includes a recording unit for recording an image on a sheet and a read unit. The recording unit includes a feeding port for feeding the sheet. The read unit includes a frame and a reading portion which movably scans in the frame to read an original. The read unit is movable relative to the recording unit between a first position and a second position. In the first position, the feeding port of the recording unit is closed by the frame. In the second position, the feeding port is not closed by the frame. The recording unit includes a first sheet feeder and a second sheet feeder, such that when the sheet is in the first position, sheet feeding from the first sheet feeder is prohibited, and a sheet is fed from the second sheet feeder.Type: GrantFiled: June 8, 2007Date of Patent: May 27, 2014Assignee: Canon Kabushiki KaishaInventors: Kuniaki Sato, Haruo Ishizuka
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Patent number: 8477391Abstract: An image reading apparatus includes a document reading and conveying unit, a pressing plate capable of moving to a position to press a document against a reading surface and to a position withdrawn from the reading surface, and a fixed reader configured to read a document fixed on the reading surface by moving a close-coupled image sensor relative to the document. The document reading and conveying unit includes a controller configured to perform pickup initialization of returning a pickup roller to an initial position after the completion of conveying one or more documents and is supported by the pressure plate. The controller includes a first timer configured to measure an elapsed time from the completion of reading performed by the fixed reader. The controller performs the pickup initialization after a measurement value measured by the first timer exceeds a first time.Type: GrantFiled: August 7, 2008Date of Patent: July 2, 2013Assignee: Canon Kabushiki KaishaInventors: Masaya Shimmachi, Haruo Ishizuka, Kuniaki Sato
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Patent number: 8368973Abstract: An image reading apparatus includes a sheet feeding unit configured to sequentially feed a plurality of documents loaded on a document positioning plate, a reading sensor arranged in a conveyance path configured to read a document of the plurality of documents fed by the sheet feeding unit, an acquisition unit configured to acquire an interval of the document between a trailing edge of a preceding document and a leading edge of a next document conveyed through the conveyance path, and a reading unit configured to execute a first reading mode using the reading sensor to read the document conveyed at a first conveyance speed, and a second reading mode using the reading sensor to read the document conveyed at a second conveyance speed that is lower than the first conveyance speed, wherein the reading unit executes the second reading mode after the first reading mode when the interval of the document is less than a predetermined interval.Type: GrantFiled: August 6, 2008Date of Patent: February 5, 2013Assignee: Canon Kabushiki KaishaInventors: Kuniaki Sato, Masaya Shimmachi, Haruo Ishizuka
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Publication number: 20110310445Abstract: A method includes a first step, a second step, and a third step. In the first step, a fed document is returned to an upstream side of a reading unit by reversing the document after a first passage through the reading unit. In the second step, the document returned in the first step is returned to the upstream side of the reading unit by reversing the document after a second passage through the reading unit. In the third step, the document returned in the second step is passed through the reading unit, and then the document is discharged.Type: ApplicationFiled: June 7, 2011Publication date: December 22, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Haruo Ishizuka
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Patent number: 7954812Abstract: An image processing apparatus stops the transport of a sheet when an access cover is opened to prevent the damage of the sheet, without additionally providing a sensor and has a transport member for transporting a sheet through an image processing unit; a driving mechanism for transmitting a driving force to the transport member; an access cover for opening a portion of a sheet transport path; and a driving switching unit for transmitting the driving force of the driving mechanism or cuts off the transmission of the driving force in operative association with the opening or closing of the access cover. The driving switching unit cuts off the transmission of the driving force to the transport member when the access cover is opened.Type: GrantFiled: May 28, 2009Date of Patent: June 7, 2011Assignee: Canon Kabushiki KaishaInventors: Masaya Shimmachi, Haruo Ishizuka, Tadashi Hanabusa, Kenkichi Sakuragi
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Patent number: 7769322Abstract: An image reading apparatus includes an image reading unit, a compression spring unit, a braking unit, and a switching unit. The compression spring unit serves as an opening and closing mechanism for the image reading unit. The braking unit brakes the opening and closing movement of the image reading unit. The switching unit transmits the rotation of the image reading unit to the braking unit when the image reading unit closes, but does not transmit the rotation of the image reading unit to the braking unit when the image reading unit opens.Type: GrantFiled: February 19, 2007Date of Patent: August 3, 2010Assignee: Canon Kabushiki KaishaInventors: Masaaki Ishihara, Haruo Ishizuka, Tadashi Hanabusa, Katsumi Obana, Shinya Asano
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Publication number: 20090302520Abstract: The invention provides an image processing apparatus capable of stopping the transport of a sheet when an access cover is opened to prevent the damage of the sheet, without additionally providing a sensor. An image processing apparatus includes: a transport member for transporting a sheet through an image processing unit; a driving mechanism for transmitting a driving force to the transport member; an access cover for opening a portion of a sheet transport path; and a driving switching unit for transmitting the driving force of the driving mechanism or cuts off the transmission of the driving force in operative association with the opening or closing of the access cover. The driving switching unit cuts off the transmission of the driving force to the transport member when the access cover is opened.Type: ApplicationFiled: May 28, 2009Publication date: December 10, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Masaya Shimmachi, Haruo Ishizuka, Tadashi Hanabusa, Kenkichi Sakuragi
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Publication number: 20090040572Abstract: An image reading apparatus includes a document reading and conveying unit, a pressing plate capable of moving to a position to press a document against a reading surface and to a position withdrawn from the reading surface, and a fixed reader configured to read a document fixed on the reading surface by moving a close-coupled image sensor relative to the document. The document reading and conveying unit includes a controller configured to perform pickup initialization of returning a pickup roller to an initial position after the completion of conveying one or more documents and is supported by the pressure plate. The controller includes a first timer configured to measure an elapsed time from the completion of reading performed by the fixed reader. The controller performs the pickup initialization after a measurement value measured by the first timer exceeds a first time.Type: ApplicationFiled: August 7, 2008Publication date: February 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Masaya Shimmachi, Haruo Ishizuka, Kuniaki Sato