Patents by Inventor Yasutsugu Saijo
Yasutsugu Saijo 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: 8002268Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: GrantFiled: June 8, 2009Date of Patent: August 23, 2011Assignee: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
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Publication number: 20090243195Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: ApplicationFiled: June 8, 2009Publication date: October 1, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
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Patent number: 7559546Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: GrantFiled: March 13, 2008Date of Patent: July 14, 2009Assignee: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
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Publication number: 20080224382Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: ApplicationFiled: March 13, 2008Publication date: September 18, 2008Applicant: Canon Kabushiki KaishaInventors: SHINYA SONODA, Yasutsugu Saijo, Yoshinori Watanabe
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Patent number: 7374162Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: GrantFiled: February 8, 2006Date of Patent: May 20, 2008Assignee: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo
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Publication number: 20060157913Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: ApplicationFiled: February 8, 2006Publication date: July 20, 2006Applicant: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo
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Patent number: 7040614Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: GrantFiled: February 14, 2003Date of Patent: May 9, 2006Assignee: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
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Patent number: 6913340Abstract: The present invention provides an ink jet recording apparatus which can maintain stable recording quality by adequately removing ink remaining on discharge ports during cleaning processing of a recording head, and a cleaning mechanism portion for such a recording apparatus. After a carriage enters into a cleaning mechanism portion and a recording head is capped by a cap, when the carriage is further shifted in an advancing direction in a capping condition, one end of the cap is opened.Type: GrantFiled: May 29, 2003Date of Patent: July 5, 2005Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Tanaka, Yasutsugu Saijo
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Patent number: 6908010Abstract: The present invention relates to a driven rotary body rotating in pressure contact with and driven by a conveyance rotary body. The driven rotary body includes a shaft portion molded from a resin as an integral body, a recess positioned around a center in a longitudinal direction for parting a mold horizontally in the longitudinal direction of the driven rotary body and a roller portion positioned on each side of the recess.Type: GrantFiled: June 5, 2003Date of Patent: June 21, 2005Assignee: Canon Kabushiki KaishaInventors: Masaya Shinmachi, Yasutsugu Saijo, Tetsuhiro Nitta
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Patent number: 6783205Abstract: An ink jet recording apparatus includes a carriage for mounting a recording head for effecting recording by discharging recording ink and for moving the recording head, and a recovery unit for effecting a recovery operation with respect to the recording head. The recording apparatus is forwarded from a manufacturing factory in a condition that the recording head filled with transporting ink different from the recording ink is mounted on the carriage, and further wherein an on-arrival recovery mode executed by the recovery unit upon first usage of the recording apparatus by the user differs from a normal recovery mode executed by the recovery unit after the first usage.Type: GrantFiled: January 22, 2002Date of Patent: August 31, 2004Assignee: Canon Kabushiki KaishaInventors: Yasutsugu Saijo, Yuji Hamasaki
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Patent number: 6739714Abstract: An image forming apparatus includes a head mounting portion for mounting an ink jet recording head for discharging ink liquid having a coloring material from an ink discharge port. Also included is a process liquid storing member for storing a process liquid for condensing the coloring material in the ink liquid. A process liquid supply roller is arranged immersibly in the process liquid stored in the process liquid storing member. The process liquid supply roller does not contact a recording surface of the recording medium. A process liquid coating roller coats the recording surface with the process liquid supplied through the process liquid supply roller, the process liquid coating roller being provided so that a peripheral surface of the process liquid coating roller is contactable with the recording surface upstream of a conveyance direction of the recording medium with respect to the head mounting portion.Type: GrantFiled: November 30, 2001Date of Patent: May 25, 2004Assignee: Canon Kabushiki KaishaInventor: Yasutsugu Saijo
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Publication number: 20040007810Abstract: The present invention relates to a driven rotary body rotating in pressure contact with and driven by a conveyance rotary body, said drive rotary body comprising a shaft portion molded from a resin in a united body, a recess positioned around a center in a longitudinal direction for parting a mold horizontally in the longitudinal direction of the driven rotary body and a roller portion positioned on each side of the recess.Type: ApplicationFiled: June 5, 2003Publication date: January 15, 2004Applicant: Canon Kabushiki KaishaInventors: Masaya Shinmachi, Yasutsugu Saijo, Tetsuhiro Nitta
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Publication number: 20030227505Abstract: The present invention has an object to provide an ink jet recording apparatus which can maintain stable recording quality by adequately removing ink remaining on discharge ports during cleaning processing of a recording head, and a cleaning mechanism portion for such a recording apparatus. There is provided an ink jet recording apparatus in which, after a carriage enters into a cleaning mechanism portion and a recording head is capped by a cap, when the carriage is further shifted in an advancing direction in a capping condition, one end of the cap is opened.Type: ApplicationFiled: May 29, 2003Publication date: December 11, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Tanaka, Yasutsugu Saijo
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Publication number: 20030160381Abstract: A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.Type: ApplicationFiled: February 14, 2003Publication date: August 28, 2003Applicant: Canon Kabushiki KaishaInventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
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Patent number: 6550890Abstract: An ink jet printing apparatus including a cap for capping ink orifices provided on a head face of an ink jet print head, an in-cap absorbing body disposed in the cap, the in-cap absorbing body not contacting the head face during capping by the cap, and a suction means for sucking ink from the ink orifices through the cap. The in-cap absorbing body has an end surface which is nearest to the head face during capping by the cap and a lower surface which is farther from the head face during capping by the cap than the end surface, and the cap has a space formed along substantially an entire circumference of a head engagement portion of the cap between the end surface of the in-cap absorbing body and the head engagement portion of the cap.Type: GrantFiled: September 28, 1999Date of Patent: April 22, 2003Assignee: Canon Kabushiki KaishaInventor: Yasutsugu Saijo
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Patent number: 6523929Abstract: According to an image forming apparatus, a simple arrangement is used to switch the transmission of drive forces, produced by drive sources that are used in common by multiple drive mechanisms, without depending on the movement of a carriage, for example. The drive force produced by a line feed (LF) motor to drive feed rollers is transmitted to a pump cam in a recovery system via a pendulum drive force transmission mechanism, which is provided at one end close to the feed rollers. And the drive force produced by another motor to drive paper supply rollers is transmitted via the same pendulum drive force transmission mechanism to the paper supply rollers, or to a blade holder and a cap holder in the recovery system. Therefore, the transmission of the drive forces can be switched by controlling the rotational directions of the motors.Type: GrantFiled: February 22, 2001Date of Patent: February 25, 2003Assignee: Canon Kabushiki KaishaInventors: Shoichi Kan, Yasutsugu Saijo, Masahito Yoshida, Nozomu Nishiberi, Masaya Shinmachi
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Publication number: 20020130920Abstract: An ink jet printing apparatus includes a cap for capping a head face of an ink jet print head and an ejection performance recovery device for recovering an ink ejection performance of the ink jet print head by drawing ink out of ink orifices of the print head with the print head capped by the cap. An in-cap absorbing body is installed in the cap and a space is formed along almost an entire circumference of a head engagement portion of the cap between ends of that surface of the in-cap absorbing body which is nearest to the head face and the head engagement surface of the cap.Type: ApplicationFiled: September 28, 1999Publication date: September 19, 2002Inventor: YASUTSUGU SAIJO
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Publication number: 20020097292Abstract: The present invention provides an ink jet recording apparatus comprising a carriage for mounting a recording head for effecting recording by discharging recording ink and for moving the recording head, and recovery means for effecting a recovery operation with respect to the recording head, and wherein the recording apparatus is forwarded from a manufacturing factory in a condition that the recording head filled with transporting ink different from the recording ink is mounted on the carriage, and further wherein an on-arrival recovery mode executed by the recovery means upon first usage of the recording apparatus by the user differs from a normal recovery mode executed by the recovery means after the first usage.Type: ApplicationFiled: January 22, 2002Publication date: July 25, 2002Applicant: Canon Kabushiki KaishaInventors: Yasutsugu Saijo, Yuji Hamasaki
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Publication number: 20020054198Abstract: An image formation apparatus includes a carriage for moving an ink jet recording head relatively with respect to a recording medium to discharge ink containing coloring materials in it from the ink discharge ports, means for applying to the recording medium the processing liquid that coheres the coloring materials in ink. This means for applying the processing liquid is arranged to be in contact with the recording medium and apply the processing liquid to the recording medium before ink to be discharged from the recording head of the ink jet recording head. This application means is mounted on the carriage. With such structure, images are formed on the recording medium, while the processing liquid and ink are caused to react upon each other thereon, thus obtaining the uniform images in good quality and condition.Type: ApplicationFiled: November 30, 2001Publication date: May 9, 2002Inventor: Yasutsugu Saijo
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Patent number: 6341858Abstract: An image formation apparatus includes a carriage for moving an ink jet recording head relatively with respect to a recording medium to discharge ink containing coloring materials in it from the ink discharge ports, means for applying to the recording medium the processing liquid that coheres the coloring materials in ink. This means for applying the processing liquid is arranged to be in contact with the recording medium and apply the processing liquid to the recording medium before ink to be discharged from the recording head of the ink jet recording head. This application means is mounted on the carriage. With such structure, images are formed on the recording medium, while the processing liquid and ink are caused to react upon each other thereon, thus obtaining the uniform images in good quality and condition.Type: GrantFiled: December 8, 1995Date of Patent: January 29, 2002Assignee: Canon Kabushiki KaishaInventor: Yasutsugu Saijo