Patents by Inventor Shinichi Yukiura
Shinichi Yukiura 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: 9457576Abstract: An inkjet printing apparatus according to the present invention includes a first printing head that performs a first printing operation by discharging ink onto the printing medium, a second printing head positioned downstream from the first printing head in a transport direction and performing a second printing operation by discharging ink onto the printing medium, and a preliminary discharge controller that causes the second printing head to perform a preliminary discharging operation that does not contribute to the second printing operation, wherein the preliminary discharge controller causes an ink discharge amount of the preliminary discharging operation of the second printing head to be smaller when an ink discharge amount of the first printing operation is greater than or equal to a predetermined value than when the ink discharge amount of the first printing operation is less than the predetermined value.Type: GrantFiled: April 28, 2015Date of Patent: October 4, 2016Assignee: Canon Kabushiki KaishaInventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
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Patent number: 9232106Abstract: An apparatus for moving a unit to execute scanning includes a scanning unit including a motor, an encoder for outputting a signal according to movement of the unit, a detection unit for detecting a current supplied to the motor, a speed control unit for executing a speed control of the motor according to the signal output from the encoder and the current detected by the detection unit, a movement control unit for setting a threshold value, moving the unit by driving the motor, by using the speed control unit, and a current control unit for setting a value greater than the predetermined value according to the threshold value and value of the current detected by the detection unit at a predetermined timing during a time period while the unit is moving.Type: GrantFiled: October 17, 2013Date of Patent: January 5, 2016Assignee: Canon Kabushiki KaishaInventors: Tomofumi Nishida, Nobutsune Kobayashi, Shinichi Yukiura, Hideyuki Kido, Ryoji Kanoyadani
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Publication number: 20150314594Abstract: An inkjet printing apparatus according to the present invention includes a first printing head that performs a first printing operation by discharging ink onto the printing medium, a second printing head positioned downstream from the first printing head in a transport direction and performing a second printing operation by discharging ink onto the printing medium, and a preliminary discharge controller that causes the second printing head to perform a preliminary discharging operation that does not contribute to the second printing operation, wherein the preliminary discharge controller causes an ink discharge amount of the preliminary discharging operation of the second printing head to be smaller when an ink discharge amount of the first printing operation is greater than or equal to a predetermined value than when the ink discharge amount of the first printing operation is less than the predetermined value.Type: ApplicationFiled: April 28, 2015Publication date: November 5, 2015Inventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
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Publication number: 20140036321Abstract: An apparatus for moving a unit to execute scanning includes a scanning unit including a motor, an encoder for outputting a signal according to movement of the unit, a detection unit for detecting a current supplied to the motor, a speed control unit for executing a speed control of the motor according to the signal output from the encoder and the current detected by the detection unit, a movement control unit for setting a threshold value, moving the unit by driving the motor, by using the speed control unit, and a current control unit for setting a value greater than the predetermined value according to the threshold value and value of the current detected by the detection unit at a predetermined timing during a time period while the unit is moving.Type: ApplicationFiled: October 17, 2013Publication date: February 6, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Tomofumi Nishida, Nobutsune Kobayashi, Shinichi Yukiura, Hideyuki Kido, Ryoji Kanoyadani
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Patent number: 8582143Abstract: An image reading apparatus comprising a conveying unit configured to convey a document; a reading unit configured to read an image of the document conveyed by the conveying unit; a storage unit configured to store data of the image read by the reading unit; a transfer unit configured to transfer the data stored in the storage unit to an external unit during a reading operation of the reading unit; and a reading control unit configured to control the reading unit to perform or stop the reading operation according to a threshold value related to a free space available for storing the data in the storage unit.Type: GrantFiled: August 7, 2008Date of Patent: November 12, 2013Assignee: Canon Kabushiki KaishaInventors: Shinichi Yukiura, Kuniaki Sato
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Patent number: 8553295Abstract: An image reading apparatus includes a conveyance unit configured to convey a sheet, a reading unit configured to read an image on the sheet conveyed by the conveyance unit, a calibration member including a white reference region for acquiring correction data for correcting image information acquired by reading the image on the sheet with the reading unit, and a driving unit configured to move the calibration member so as to locate the white reference region in a position where the reading unit can read the white reference region if the correction data is acquired, and to locate a region other than the white reference region in a position that faces the sheet to be conveyed and is not brought into contact with the sheet if the sheet is conveyed.Type: GrantFiled: December 7, 2010Date of Patent: October 8, 2013Assignee: Canon Kabushiki KaishaInventors: Tomofumi Nishida, Shinichi Yukiura
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Patent number: 8373374Abstract: An apparatus including a DC motor includes a driven member configured to be driven by the DC motor, and a drive control unit configured to define a plurality of predetermined phases of the DC motor as target stop phases and to cause the DC motor to make at least one rotation to perform preliminary driving that rotates the DC motor to each target stop phase by driving and stopping the DC motor, configured to acquire a difference value between the target stop phase and an actual stop phase for each target stop phase, and configured to drive the DC motor so that the driven member is repeatedly moved and stopped in the operation of the driven member and to perform control so that, based on the difference value acquired by the acquisition unit, electric power is supplied to the DC motor in a phase corresponding to a stop position of the driven member.Type: GrantFiled: August 2, 2010Date of Patent: February 12, 2013Assignee: Canon Kabushiki KaishaInventors: Ryoji Kanoyadani, Hideyuki Kido, Tomofumi Nishida, Nobutsune Kobayashi, Shinichi Yukiura
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Publication number: 20120092731Abstract: An image reading apparatus includes a conveyance unit configured to convey a sheet, a reading unit configured to read an image on the sheet conveyed by the conveyance unit, a calibration member including a white reference region for acquiring correction data for correcting image information acquired by reading the image on the sheet with the reading unit, and a driving unit configured to move the calibration member so as to locate the white reference region in a position where the reading unit can read the white reference region if the correction data is acquired, and to locate a region other than the white reference region in a position that faces the sheet to be conveyed and is not brought into contact with the sheet if the sheet is conveyed.Type: ApplicationFiled: December 7, 2010Publication date: April 19, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tomofumi Nishida, Shinichi Yukiura
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Publication number: 20110032583Abstract: An apparatus for moving a unit to execute scanning includes a scanning unit including a motor, an encoder for outputting a signal according to movement of the unit, a detection unit for detecting a current supplied to the motor, a speed control unit for executing a speed control of the motor according to the signal output from the encoder and the current detected by the detection unit, a movement control unit for setting a threshold value, moving the unit by driving the motor, by using the speed control unit, and a current control unit for setting a value greater than the predetermined value according to the threshold value and value of the current detected by the detection unit at a predetermined timing during a time period while the unit is moving.Type: ApplicationFiled: August 2, 2010Publication date: February 10, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomofumi Nishida, Nobutsune Kobayashi, Shinichi Yukiura, Hideyuki Kido, Ryoji Kanoyadani
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Publication number: 20110031923Abstract: An apparatus including a DC motor includes a driven member configured to be driven by the DC motor, and a drive control unit configured to define a plurality of predetermined phases of the DC motor as target stop phases and to cause the DC motor to make at least one rotation to perform preliminary driving that rotates the DC motor to each target stop phase by driving and stopping the DC motor, configured to acquire a difference value between the target stop phase and an actual stop phase for each target stop phase, and configured to drive the DC motor so that the driven member is repeatedly moved and stopped in the operation of the driven member and to perform control so that, based on the difference value acquired by the acquisition unit, electric power is supplied to the DC motor in a phase corresponding to a stop position of the driven member.Type: ApplicationFiled: August 2, 2010Publication date: February 10, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Ryoji Kanoyadani, Hideyuki Kido, Tomofumi Nishida, Nobutsune Kobayashi, Shinichi Yukiura
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Publication number: 20090040560Abstract: An image reading apparatus comprising a conveying unit configured to convey a document; a reading unit configured to read an image of the document conveyed by the conveying unit; a storage unit configured to store data of the image read by the reading unit; a transfer unit configured to transfer the data stored in the storage unit to an external unit during a reading operation of the reading unit; and a reading control unit configured to control the reading unit to perform or stop the reading operation according to a threshold value related to a free space available for storing the data in the storage unit.Type: ApplicationFiled: August 7, 2008Publication date: February 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Shinichi Yukiura, Kuniaki Sato