Patents by Inventor Koichiro Kawaguchi
Koichiro Kawaguchi 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: 8485630Abstract: A device includes a conveying roller configured to convey a recording medium, a follower roller configured to press the recording medium against the conveying roller, a detector configured to detect a direction of skew of the conveyed recording medium, and a changer configured to change a state of contact between the recording medium and the conveying roller in accordance with a result of the detection by the detector such that a length of a portion of the conveying roller that is in contact with the recording medium in a conveyance direction is larger on a side toward which the recording medium is skewed than on an opposite side.Type: GrantFiled: November 12, 2010Date of Patent: July 16, 2013Assignee: Canon Kabushiki KaishaInventors: Koichiro Kawaguchi, Yasuhiko Ikeda, Toshiki Takeuchi, Kengo Nieda, Masahito Yoshida, Masato Izumi, Kenji Shigeno, Ryosuke Sato, Noriyuki Sugiyama, Takaaki Ishida
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Patent number: 8469506Abstract: A printer has a pair of a right side member (8) and a left side member (9) placed on opposite side portions of a base (53), rollers including a transport roller (3), a carriage chassis (12), a platen (2) and a feed unit. The right side member and the left side member are formed by molding a resin material. The roller, the carriage chassis, the platen and the feed unit are positioned and held with the pair of the right side member and the left side member.Type: GrantFiled: April 30, 2009Date of Patent: June 25, 2013Assignee: Canon Kabushiki KaishaInventors: Haruo Uchida, Yasuhiko Ikeda, Hiroyuki Saito, Kenji Shigeno, Koichiro Kawaguchi, Takaaki Ishida
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Patent number: 8408829Abstract: A recording apparatus includes a platen that guides a sheet, restraining members disposed on the platen at respective side edges of the sheet to restrain the side edges of the sheet from being raised, a sheet width detector that detects the width of the sheet, and a restraining member detector that detects the positions of the restraining members. At least one of the restraining members is moved in accordance with the information obtained by the sheet width detector regarding the positions of the side edges of the sheet and the information obtained by the restraining position detector regarding the positions of the restraining members.Type: GrantFiled: April 22, 2008Date of Patent: April 2, 2013Assignee: Canon Kabushiki KaishaInventors: Koichiro Kawaguchi, Kenji Kawazoe, Haruo Uchida, Nozomu Nishiberi, Yoshiaki Watanabe, Yasuyuki Asai, Mitsuru Kondo
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Patent number: 8408827Abstract: A method includes pulling out and conveying a sheet having splice portions, acquiring information relating to a position of an indentation on the sheet formed in addition to a splice portion, and performing processing on the sheet but a position corresponding to the acquired position of the indentation and its vicinity.Type: GrantFiled: June 28, 2010Date of Patent: April 2, 2013Assignee: Canon Kabushiki KaishaInventors: Toshiki Takeuchi, Yasuhiko Ikeda, Koichiro Kawaguchi, Kengo Nieda, Masahito Yoshida, Masato Izumi, Kenji Shigeno, Ryosuke Sato
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Patent number: 8393705Abstract: An apparatus includes a line-type recording head including a plurality of recording elements formed thereon, a holding unit configured to hold a sheet, a conveyance mechanism configured to convey the sheet held by the holding unit to a position of recording by the recording head, a shift mechanism capable of relatively shifting a position of the sheet in a sheet width direction with respect to the recording head while the sheet is fed from the holding unit to the recording position, and a control unit configured to control the conveyance mechanism and the shift mechanism.Type: GrantFiled: November 19, 2010Date of Patent: March 12, 2013Assignee: Canon Kabushiki KaishaInventors: Kenji Shigeno, Yasuhiko Ikeda, Masahito Yoshida, Koichiro Kawaguchi, Toshiki Takeuchi, Masato Izumi, Ryosuke Sato, Kengo Nieda
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Patent number: 8387976Abstract: A sheet conveyance apparatus includes: a guide unit for guiding the side end of the sheet; a first roller pair arranged on the downstream side of the guide unit for conveying the sheet, including a driven roller held in contact with a whole sheet in a sheet width direction; and a second roller pair having a conveyance roller arranged on the downstream side of the roller and adapted to convey the sheet, and a plurality of pinch rollers pinching the sheet in cooperation with the conveyance roller, wherein each of the plurality of pinch rollers applies to the sheet a conveyance force inclined toward a conveyance path side end, which is nearer to the pinch roller, and wherein the smaller the distance between the pinch roller and the conveyance path side end, the greater the inclination of the conveyance force thereof.Type: GrantFiled: June 5, 2012Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Kengo Nieda, Koichiro Kawaguchi, Toshiki Takeuchi, Ryosuke Sato, Shigeru Toriihara
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Publication number: 20130010043Abstract: In a first step, a sheet is conveyed in a direction, whereby a leading end portion of the sheet is fed to a position between a decurl roller and a decurl pinch roller, which are in positions spaced apart from each other. In a second step, the leading end portion of the sheet is curved and held by causing the decurl pinch roller to come close to or press against the decurl roller. In a third step, the leading end portion of the sheet is withdrawn from between the decurl roller and the decurl pinch roller by conveying the sheet in a direction opposed to the conveying direction. After executing the first to third steps, the sheet is conveyed in the conveying direction through the first step while the sheet is curved by the decurl roller.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Masahito Yoshida, Yasuhiko Ikeda, Kenji Shigeno, Koichiro Kawaguchi, Toshiki Takeuchi, Masato Izumi, Kengo Nieda, Ryosuke Sato
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Publication number: 20130010026Abstract: A recording apparatus to record an image on a recording medium using a recording head includes a first conveying roller, a second conveying roller, and a controller. The first conveying roller is positioned upstream of the recording head in a conveying direction and the second conveying roller is positioned downstream of the recording head in the conveying direction. In response to a first conveying mode being selected, the controller performs a rotational phase control in which the controller controls rotational phases of the first conveying roller and the second conveying roller such that the recording medium is conveyed by predetermined sections of circumferences of the first conveying roller and the second conveying roller when a trailing end of the recording medium passes the first conveying roller. In response to the second conveying mode being selected, the controller does not perform the rotational phase control.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Minoru Teshigawara, Jun Yasutani, Takeshi Yazawa, Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshiro Yoshiike, Shuichi Tokuda
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Publication number: 20120268516Abstract: A recording apparatus has a controller that controls a conveying roller and a discharge roller for conveying a recording medium. The controller controls the rotation phases of the conveying roller and the discharge roller when the recording medium leaves the conveying roller before the recording medium enters the conveying roller.Type: ApplicationFiled: July 6, 2012Publication date: October 25, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshirou Yoshiike, Jun Yasutani, Shuichi Tokuda
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Patent number: 8295758Abstract: In a first step, a sheet is conveyed in a direction, whereby a leading end portion of the sheet is fed to a position between a decurl roller and a decurl pinch roller, which are in positions spaced apart from each other. In a second step, the leading end portion of the sheet is curved and held by causing the decurl pinch roller to come close to or press against the decurl roller. In a third step, the leading end portion of the sheet is withdrawn from between the decurl roller and the decurl pinch roller by conveying the sheet in a direction opposed to the conveying direction. After executing the first to third steps, the sheet is conveyed in the conveying direction through the first step while the sheet is curved by the decurl roller.Type: GrantFiled: October 25, 2010Date of Patent: October 23, 2012Assignee: Canon Kabushiki KaishaInventors: Masahito Yoshida, Yasuhiko Ikeda, Kenji Shigeno, Koichiro Kawaguchi, Toshiki Takeuchi, Masato Izumi, Kengo Nieda, Ryosuke Sato
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Patent number: 8286960Abstract: A recording apparatus includes a conveying roller and an ejection roller for conveying a recording medium. The recording apparatus also includes a controller which controls the conveying roller and the ejection roller. The controller selectively performs a conveyance control process for the rollers when the recording medium leaves the conveying roller.Type: GrantFiled: August 19, 2009Date of Patent: October 16, 2012Assignee: Canon Kabushiki KaishaInventors: Minoru Teshigawara, Jun Yasutani, Takeshi Yazawa, Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshiro Yoshiike, Shuichi Tokuda
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Publication number: 20120242037Abstract: A sheet conveyance apparatus includes: a guide unit for guiding the side end of the sheet; a first roller pair arranged on the downstream side of the guide unit for conveying the sheet, including a driven roller held in contact with a whole sheet in a sheet width direction; and a second roller pair having a conveyance roller arranged on the downstream side of the roller and adapted to convey the sheet, and a plurality of pinch rollers pinching the sheet in cooperation with the conveyance roller, wherein each of the plurality of pinch rollers applies to the sheet a conveyance force inclined toward a conveyance path side end, which is nearer to the pinch roller, and wherein the smaller the distance between the pinch roller and the conveyance path side end, the greater the inclination of the conveyance force thereof.Type: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kengo Nieda, Koichiro Kawaguchi, Toshiki Takeuchi, Ryosuke Sato, Shigeru Toriihara
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Publication number: 20120206520Abstract: A recording apparatus includes a recording head, a roller configured to convey a recording medium, an acquisition unit configured to acquire information about a conveyance amount for conveying the recording medium per a predetermined rotation amount of the roller, a recording timing generation unit configured to generate a plurality of timing signals for performing recording for one raster line according to a rotation of the roller during one rotation thereof, and a drive signal generation unit configured to generate a drive reference signal for performing the recording for the one raster line on the recording medium at a predetermined interval based on the conveyance amount information and the timing signal.Type: ApplicationFiled: February 7, 2012Publication date: August 16, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kengo Nieda, Kazuya Koizumi, Satoshi Azuma, Koichiro Kawaguchi, Toshiki Takeuchi, Shigeru Toriihara
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Publication number: 20120206550Abstract: A sheet conveying apparatus coveys a sheet while nipping the sheet between a conveyance roller and a pinch roller. The pinch roller includes a first roller portion and a second roller portion adjacent to each other in a rotational axial direction thereof. The pinch roller further includes a mechanism configured to change a difference between a pressing force that the first roller portion applies to the conveyance roller and a pressing force that the second roller portion applies to the conveyance roller.Type: ApplicationFiled: February 10, 2012Publication date: August 16, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toshiki Takeuchi, Koichiro Kawaguchi, Shigeru Toriihara, Kengo Nieda
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Patent number: 8235492Abstract: A recording apparatus has a controller that controls a conveying roller and a discharge roller for conveying a recording medium. The controller controls the rotation phases of the conveying roller and the discharge roller when the recording medium leaves the conveying roller before the recording medium enters the conveying roller.Type: GrantFiled: August 18, 2009Date of Patent: August 7, 2012Assignee: Canon Kabushiki KaishInventors: Hiroyuki Saito, Takaaki Ishida, Koichiro Kawaguchi, Toshirou Yoshiike, Jun Yasutani, Shuichi Tokuda
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Publication number: 20120194613Abstract: A printing apparatus includes a print head for inkjet printing, and a guide disposed opposing the print head and configured to guide a back surface of a sheet being conveyed in a first direction. The back surface is a reverse surface of a surface being printed. The printing apparatus further includes a receiving unit disposed opposing the print head and configured to receive ink outside the sheet being conveyed, and a mechanism configured to change a position of the guide in a second direction relative to the receiving unit being fixed, according to a size of the sheet to be used. The second direction crosses the first direction.Type: ApplicationFiled: January 11, 2012Publication date: August 2, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Koichiro Kawaguchi, Toshiki Takeuchi, Kengo Nieda, Shigeru Toriihara
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Patent number: 8215638Abstract: A sheet conveyance apparatus includes: a guide unit for guiding the side end of the sheet; a first roller pair arranged on the downstream side of the guide unit for conveying the sheet, including a driven roller held in contact with a whole sheet in a sheet width direction; and a second roller pair having a conveyance roller arranged on the downstream side of the roller and adapted to convey the sheet, and a plurality of pinch rollers pinching the sheet in cooperation with the conveyance roller, wherein each of the plurality of pinch rollers applies to the sheet a conveyance force inclined toward a conveyance path side end, which is nearer to the pinch roller, and wherein the smaller the distance between the pinch roller and the conveyance path side end, the greater the inclination of the conveyance force thereof.Type: GrantFiled: December 10, 2010Date of Patent: July 10, 2012Assignee: Canon Kabushiki KaishaInventors: Kengo Nieda, Koichiro Kawaguchi, Toshiki Takeuchi, Ryosuke Sato, Shigeru Toriihara
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Publication number: 20120133719Abstract: A printing apparatus includes: a upstream roller pair arranged on the upstream side of a printing head with respect to a direction in which a sheet is conveyed; and a downstream roller pair arranged on the downstream side of the printing head with respect to the direction, wherein each of the upstream roller pair and the downstream roller pair includes a first roller and a second roller configured to hold the sheet therebetween. In both of the upstream roller pair and the downstream roller pair, a rotation shaft of the second roller is provided to be situated on the downstream side of a rotation shaft of the first roller with respect to the direction.Type: ApplicationFiled: November 23, 2011Publication date: May 31, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Shigeru Toriihara, Kengo Nieda, Toshiki Takeuchi, Koichiro Kawaguchi, Ryosuke Sato
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Publication number: 20120098190Abstract: A sheet conveyance apparatus includes: a guide unit for guiding the side end of the sheet; a first roller pair arranged on the downstream side of the guide unit for conveying the sheet, including a driven roller held in contact with a whole sheet in a sheet width direction; and a second roller pair having a conveyance roller arranged on the downstream side of the roller and adapted to convey the sheet, and a plurality of pinch rollers pinching the sheet in cooperation with the conveyance roller, wherein each of the plurality of pinch rollers applies to the sheet a conveyance force inclined toward a conveyance path side end, which is nearer to the pinch roller, and wherein the smaller the distance between the pinch roller and the conveyance path side end, the greater the inclination of the conveyance force thereof.Type: ApplicationFiled: December 10, 2010Publication date: April 26, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kengo Nieda, Koichiro Kawaguchi, Toshiki Takeuchi, Ryosuke Sato, Shigeru Toriihara
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Patent number: D675948Type: GrantFiled: March 8, 2011Date of Patent: February 12, 2013Assignee: Hochiki CorporationInventors: Koichiro Kawaguchi, Hidetaka Irumano, Manabu Matsumoto, Masashi Arikawa