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).

  • Patent number: 8002268
    Abstract: 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: Grant
    Filed: June 8, 2009
    Date of Patent: August 23, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
  • Publication number: 20090243195
    Abstract: 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: Application
    Filed: June 8, 2009
    Publication date: October 1, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
  • Patent number: 7559546
    Abstract: 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: Grant
    Filed: March 13, 2008
    Date of Patent: July 14, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
  • Publication number: 20080224382
    Abstract: 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: Application
    Filed: March 13, 2008
    Publication date: September 18, 2008
    Applicant: Canon Kabushiki Kaisha
    Inventors: SHINYA SONODA, Yasutsugu Saijo, Yoshinori Watanabe
  • Patent number: 7374162
    Abstract: 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: Grant
    Filed: February 8, 2006
    Date of Patent: May 20, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo
  • Publication number: 20060157913
    Abstract: 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: Application
    Filed: February 8, 2006
    Publication date: July 20, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo
  • Patent number: 7040614
    Abstract: 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: Grant
    Filed: February 14, 2003
    Date of Patent: May 9, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
  • Patent number: 6913340
    Abstract: 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: Grant
    Filed: May 29, 2003
    Date of Patent: July 5, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Tanaka, Yasutsugu Saijo
  • Patent number: 6908010
    Abstract: 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: Grant
    Filed: June 5, 2003
    Date of Patent: June 21, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaya Shinmachi, Yasutsugu Saijo, Tetsuhiro Nitta
  • Patent number: 6783205
    Abstract: 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: Grant
    Filed: January 22, 2002
    Date of Patent: August 31, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasutsugu Saijo, Yuji Hamasaki
  • Patent number: 6739714
    Abstract: 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: Grant
    Filed: November 30, 2001
    Date of Patent: May 25, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasutsugu Saijo
  • Publication number: 20040007810
    Abstract: 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: Application
    Filed: June 5, 2003
    Publication date: January 15, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Masaya Shinmachi, Yasutsugu Saijo, Tetsuhiro Nitta
  • Publication number: 20030227505
    Abstract: 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: Application
    Filed: May 29, 2003
    Publication date: December 11, 2003
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroyuki Tanaka, Yasutsugu Saijo
  • Publication number: 20030160381
    Abstract: 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: Application
    Filed: February 14, 2003
    Publication date: August 28, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe
  • Patent number: 6550890
    Abstract: 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: Grant
    Filed: September 28, 1999
    Date of Patent: April 22, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasutsugu Saijo
  • Patent number: 6523929
    Abstract: 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: Grant
    Filed: February 22, 2001
    Date of Patent: February 25, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoichi Kan, Yasutsugu Saijo, Masahito Yoshida, Nozomu Nishiberi, Masaya Shinmachi
  • Publication number: 20020130920
    Abstract: 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: Application
    Filed: September 28, 1999
    Publication date: September 19, 2002
    Inventor: YASUTSUGU SAIJO
  • Publication number: 20020097292
    Abstract: 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: Application
    Filed: January 22, 2002
    Publication date: July 25, 2002
    Applicant: Canon Kabushiki Kaisha
    Inventors: Yasutsugu Saijo, Yuji Hamasaki
  • Publication number: 20020054198
    Abstract: 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: Application
    Filed: November 30, 2001
    Publication date: May 9, 2002
    Inventor: Yasutsugu Saijo
  • Patent number: 6341858
    Abstract: 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: Grant
    Filed: December 8, 1995
    Date of Patent: January 29, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasutsugu Saijo