Patents by Inventor Takeaki Nakano
Takeaki Nakano 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: 9242470Abstract: An apparatus includes a recording head arranged so as to oppose a sheet moving in a first direction, in which a plurality of first nozzle chips and a plurality of second nozzle chips each having a nozzle array are arranged as different arrays in a second direction crossing the first direction, and in which the first nozzle chips and the second nozzle chips adjacent to each other are shifted from each other in the second direction, a first suction unit opposed to the first nozzle chips and configured to suction ink from a part of the nozzle arrays included in the first nozzle chips, a second suction unit opposed to the second nozzle chips and configured to suction ink from a part of the nozzle arrays included in the second nozzle chips, a suction holder configured to retain the first suction unit and the second suction unit, and a movement mechanism configured to cause relative movement between the recording head and the suction holder in the second direction, wherein the first suction unit and the second suctType: GrantFiled: November 15, 2010Date of Patent: January 26, 2016Assignee: Canon Kabushiki KaishaInventors: Seiji Suzuki, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Susumu Hirosawa, Takeaki Nakano
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Patent number: 8950838Abstract: An inkjet recording apparatus stabilizes an ink discharge amount of a line head, while suppressing an ink supply amount of a circulation route, thereby performing high quality image recording. The inkjet recording apparatus includes a first flow path configured to supply ink from an ink tank to a first discharge port group, a second flow path configured to supply ink from the ink tank to a second discharge port group, and a control unit configured to control an ink supply amount of at least one of the first flow path and the second flow path according to the passing position of a recording medium with respect to the line head.Type: GrantFiled: October 24, 2012Date of Patent: February 10, 2015Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Tanaka, Yuji Kanome, Yoshiaki Suzuki, Masahiro Sugimoto, Seiji Suzuki, Susumu Hirosawa, Takeaki Nakano
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Patent number: 8876251Abstract: An apparatus includes a supply unit having a humidifying portion that supplies humidified gas near a nozzle array of a line-type recording head. In correspondence to displacement of the recording head in a direction of the nozzle array, at least one of an introducing direction and an introducing position of the supplied humidified gas can be changed.Type: GrantFiled: October 1, 2010Date of Patent: November 4, 2014Assignee: Canon Kabushiki KaishaInventors: Masahiro Sugimoto, Akira Kida, Susumu Hirosawa, Takeaki Nakano, Hiroyuki Tanaka, Seiji Suzuki, Yoshiaki Suzuki, Yuji Kanome
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Patent number: 8833903Abstract: An inkjet recording apparatus may include a recording unit, an ink receiver, and a control unit. The recording unit records an image on a sheet by causing a recording head including a plurality of nozzle arrays to reciprocate along a surface of the sheet in a direction in which the plurality of nozzle arrays is arranged. The ink receiver receives ink ejected outside the sheet in preliminary ejection from the recording head. Depending on a recording region on the sheet and which of the plurality of nozzle arrays is or are to be used for recording, the control unit determines a reversing position at which the recording head is reversed in direction of the reciprocation such that all of the plurality of nozzle arrays pass over the ink receiver in a single scan included in the reciprocation.Type: GrantFiled: July 28, 2011Date of Patent: September 16, 2014Assignee: Canon Kabushiki KaishaInventors: Akiyoshi Sahara, Yasufumi Ogasawara, Takeaki Nakano
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Patent number: 8833902Abstract: An apparatus includes a recording head having a sealing portion arranged in proximity to nozzle arrays and protruding beyond a nozzle surface. A wiper unit configured to wipe the nozzle surface of the recording head has a first wiper blade and a second wiper blade, and the first wiper blade is arranged to be inclined by an angle ?1 (?1>0) with respect to a direction orthogonal to the wiping direction within a plane parallel to the nozzle surface, while the second wiper blade is arranged to be inclined by an angle ?2 (?2<0) with respect to the direction orthogonal to the wiping direction within the plane.Type: GrantFiled: November 8, 2010Date of Patent: September 16, 2014Assignee: Canon Kabushiki KaishaInventors: Takaya Sato, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Seiji Suzuki, Susumu Hirosawa, Takeaki Nakano
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Patent number: 8608298Abstract: Provided is a printing apparatus in which bubbles in a print head are easily removed. The printing apparatus includes a first one-way valve disposed between the pump and the ink tank in the collection channel, the first one-way valve allowing movement of ink from the pump to the ink tank and blocking movement of ink from the ink tank to the pump; a circulation channel that connects the ink tank to the collection channel at a position between the pump and the first one-way valve, the circulation channel enabling circulation of ink from the ink tank, through the print head, and to the ink tank; and a second one-way valve disposed in the circulation channel, the second one-way valve allowing movement of ink from the ink tank to the pump and blocking movement of ink from the pump to the ink tank.Type: GrantFiled: April 14, 2011Date of Patent: December 17, 2013Assignee: Canon Kabushiki KaishaInventors: Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Seiji Suzuki, Masahiro Sugimoto, Takeaki Nakano, Susumu Hirosawa
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Patent number: 8523345Abstract: An apparatus includes a humidifying unit that generates humidified gas, a drying unit that dries ink applied to a sheet by a recording unit, a first duct that supplies gas discharged from the drying unit to at least one of the humidifying unit and the recording unit, and a second duct that supplies the humidified gas generated by the humidifying unit to the recording unit.Type: GrantFiled: October 12, 2010Date of Patent: September 3, 2013Assignee: Canon Kabushiki KaishaInventors: Yoshiaki Suzuki, Yuji Kanome, Seiji Suzuki, Hiroyuki Tanaka, Takeaki Nakano, Masahiro Sugimoto, Susumu Hirosawa
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Patent number: 8454118Abstract: A supply unit is provided to supply humidified gas near a nozzle array of a line-type recording head. The flow-rate distribution of the supplied humidified gas in a direction of the nozzle array is changeable in accordance with a conveying region where a sheet is conveyed while opposing the nozzle array.Type: GrantFiled: October 1, 2010Date of Patent: June 4, 2013Assignee: Canon Kabushiki KaishaInventors: Akira Kida, Masahiro Sugimoto, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Seiji Suzuki, Takeaki Nakano, Susumu Hirosawa
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Patent number: 8356880Abstract: In order to efficiently perform preliminary ejection of ink at a bend of an ink circulation passage, the number of preliminary ejections of a nozzle group located on the outer side of the bend is set larger than the number of preliminary ejections of a nozzle group located in the middle of the bend.Type: GrantFiled: February 23, 2011Date of Patent: January 22, 2013Assignee: Canon Kabushiki KaishaInventors: Susumu Hirosawa, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Seiji Suzuki, Takeaki Nakano
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Publication number: 20120044290Abstract: An inkjet recording apparatus may include a recording unit, an ink receiver, and a control unit. The recording unit records an image on a sheet by causing a recording head including a plurality of nozzle arrays to reciprocate along a surface of the sheet in a direction in which the plurality of nozzle arrays is arranged. The ink receiver receives ink ejected outside the sheet in preliminary ejection from the recording head. Depending on a recording region on the sheet and which of the plurality of nozzle arrays is or are to be used for recording, the control unit determines a reversing position at which the recording head is reversed in direction of the reciprocation such that all of the plurality of nozzle arrays pass over the ink receiver in a single scan included in the reciprocation.Type: ApplicationFiled: July 28, 2011Publication date: February 23, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Akiyoshi Sahara, Yasufumi Ogasawara, Takeaki Nakano
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Publication number: 20110279525Abstract: An apparatus includes a recording head having nozzle chips arranged in a staggered configuration along a second direction that intersects a first direction in which a sheet is conveyed, a first suction portion corresponding to a first row of nozzle chips in the staggered configuration, and a second suction portion corresponding to a second row of nozzle chips. The first suction portion and the second suction port are in a positional relationship in which they are displaced in the second direction so as to correspond to displacement between a first nozzle chip in the first row and its neighboring second nozzle chip in the second row in the second direction. The apparatus further includes a positioning member having a plurality of reference surfaces for use in positioning the recording head at different locations in a third direction that intersects the first direction and the second direction.Type: ApplicationFiled: December 8, 2010Publication date: November 17, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Seiji Suzuki, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Susumu Hirosawa, Takeaki Nakano
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Publication number: 20110254903Abstract: Provided is a printing apparatus in which bubbles in a print head are easily removed. The printing apparatus includes a first one-way valve disposed between the pump and the ink tank in the collection channel, the first one-way valve allowing movement of ink from the pump to the ink tank and blocking movement of ink from the ink tank to the pump; a circulation channel that connects the ink tank to the collection channel at a position between the pump and the first one-way valve, the circulation channel enabling circulation of ink from the ink tank, through the print head, and to the ink tank; and a second one-way valve disposed in the circulation channel, the second one-way valve allowing movement of ink from the ink tank to the pump and blocking movement of ink from the pump to the ink tank.Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Seiji Suzuki, Masahiro Sugimoto, Takeaki Nakano, Susumu Hirosawa
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Publication number: 20110211018Abstract: In order to efficiently perform preliminary ejection of ink at a bend of an ink circulation passage, the number of preliminary ejections of a nozzle group located on the outer side of the bend is set larger than the number of preliminary ejections of a nozzle group located in the middle of the bend.Type: ApplicationFiled: February 23, 2011Publication date: September 1, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Susumu Hirosawa, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Seiji Suzuki, Takeaki Nakano
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Publication number: 20110115863Abstract: An apparatus includes a humidifying unit that generates humidified gas, a drying unit that dries ink applied to a sheet by a recording unit, a first duct that supplies gas discharged from the drying unit to at least one of the humidifying unit and the recording unit, and a second duct that supplies the humidified gas generated by the humidifying unit to the recording unit.Type: ApplicationFiled: October 12, 2010Publication date: May 19, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Yoshiaki Suzuki, Yuji Kanome, Seiji Suzuki, Hiroyuki Tanaka, Takeaki Nakano, Masahiro Sugimoto, Susumu Hirosawa
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Publication number: 20110115846Abstract: An apparatus includes a recording head arranged so as to oppose a sheet moving in a first direction, in which a plurality of first nozzle chips and a plurality of second nozzle chips each having a nozzle array are arranged as different arrays in a second direction crossing the first direction, and in which the first nozzle chips and the second nozzle chips adjacent to each other are shifted from each other in the second direction, a first suction unit opposed to the first nozzle chips and configured to suction ink from a part of the nozzle arrays included in the first nozzle chips, a second suction unit opposed to the second nozzle chips and configured to suction ink from a part of the nozzle arrays included in the second nozzle chips, a suction holder configured to retain the first suction unit and the second suction unit, and a movement mechanism configured to cause relative movement between the recording head and the suction holder in the second direction, wherein the first suction unit and the second suctType: ApplicationFiled: November 15, 2010Publication date: May 19, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Seiji Suzuki, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Susumu Hirosawa, Takeaki Nakano
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Publication number: 20110109689Abstract: An apparatus includes a supply unit having a humidifying portion that supplies humidified gas near a nozzle array of a line-type recording head. In correspondence to displacement of the recording head in a direction of the nozzle array, at least one of an introducing direction and an introducing position of the supplied humidified gas can be changed.Type: ApplicationFiled: October 1, 2010Publication date: May 12, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Sugimoto, Akira Kida, Susumu Hirosawa, Takeaki Nakano, Hiroyuki Tanaka, Seiji Suzuki, Yoshiaki Suzuki, Yuji Kanome
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Publication number: 20110109691Abstract: An apparatus includes a recording head having a sealing portion arranged in proximity to nozzle arrays and protruding beyond a nozzle surface. A wiper unit configured to wipe the nozzle surface of the recording head has a first wiper blade and a second wiper blade, and the first wiper blade is arranged to be inclined by an angle ?1 (?1>0) with respect to a direction orthogonal to the wiping direction within a plane parallel to the nozzle surface, while the second wiper blade is arranged to be inclined by an angle ?2 (?2<0) with respect to the direction orthogonal to the wiping direction within the plane.Type: ApplicationFiled: November 8, 2010Publication date: May 12, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Takaya Sato, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Masahiro Sugimoto, Seiji Suzuki, Susumu Hirosawa, Takeaki Nakano
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Publication number: 20110109690Abstract: A supply unit is provided to supply humidified gas near a nozzle array of a line-type recording head. The flow-rate distribution of the supplied humidified gas in a direction of the nozzle array is changeable in accordance with a conveying region where a sheet is conveyed while opposing the nozzle array.Type: ApplicationFiled: October 1, 2010Publication date: May 12, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Akira Kida, Masahiro Sugimoto, Yuji Kanome, Hiroyuki Tanaka, Yoshiaki Suzuki, Seiji Suzuki, Takeaki Nakano, Susumu Hirosawa
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Patent number: 7889380Abstract: When the time period is night, processing advances to step S13 to set the initialization speed of a line feed motor to the first speed (v1), and to step S15 to execute initialization operation of the line feed motor at the first speed (v1). When the time period is morning or daytime, the processing advances to step S12 to detect a cover open/closed state. When the cover is open, the processing advances to step S13 to set the initialization speed of the line feed motor to the first speed (v1). When the cover is closed, the processing advances to step S14 to set the initialization speed of the line feed motor to the second speed (v2) which is higher than the first speed (v1). The processing advances to step S15 to execute initialization operation of the line feed motor at the second speed (v2).Type: GrantFiled: August 13, 2003Date of Patent: February 15, 2011Assignee: Canon Kabushiki KaishaInventors: Tetsushi Kohno, Masaya Kikuta, Norio Shimura, Takeaki Nakano, Hirokazu Kameda, Masaaki Endo, Shigehi Abe, Manabu Kuchiki, Masanori Echigo, Munetaka Yamaguchi
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Publication number: 20080058979Abstract: Web is in the form of two web rolls, each of which is obtained by winding the web in a roll. The web of a selected one of the two web rolls is configured to be threaded into a transport route of a printing press by causing a holder to hold a forward edge portion of the web, and by thus moving the holder by drive of a motor while causing the web to be rotated and unwound by a corresponding one of motors. Before threading the web into the transport route, the diameter of the selected one of the web rolls is measured in order to calculate the transport speed of the web or the speed at which the web is unwound from the corresponding one of the web rolls so that the speed at which the web is threaded should be adequate.Type: ApplicationFiled: August 29, 2007Publication date: March 6, 2008Inventor: Takeaki NAKANO