Patents by Inventor Shigeo Murayama
Shigeo Murayama 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: 9327930Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: GrantFiled: February 19, 2015Date of Patent: May 3, 2016Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20150166284Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: ApplicationFiled: February 19, 2015Publication date: June 18, 2015Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 8991819Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: GrantFiled: November 25, 2013Date of Patent: March 31, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20140077441Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: ApplicationFiled: November 25, 2013Publication date: March 20, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 8616548Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: GrantFiled: December 4, 2012Date of Patent: December 31, 2013Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 8342519Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: GrantFiled: October 13, 2010Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20110089628Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.Type: ApplicationFiled: October 13, 2010Publication date: April 21, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 7677556Abstract: A holding member is rotatably axially supported to the apparatus main body, holds the sheet feeding unit to a rotational edge, and moves the sheet feeding unit to one of a sheet feeding position and a standby position and a gear train. By transferring the rotation of the opening/closing operation of the feed tray to the holding member through the gear train so that the sheet feeding unit is moved along with the opening/closing operation of the feed tray.Type: GrantFiled: February 21, 2007Date of Patent: March 16, 2010Assignee: Canon Kabushiki KaishaInventors: Shigeo Murayama, Kenichi Nakao
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Patent number: 7643785Abstract: An image heating device includes a pressure-changing mechanism configured to change pressure applied to a heating nip. A cam of the pressure-changing mechanism acting on a pressure-applying mechanism is attached to a rotating shaft of a conveying roller that conveys recording materials. With this, an increase in the cost of the device can be regulated.Type: GrantFiled: March 26, 2007Date of Patent: January 5, 2010Assignee: Canon Kabushiki KaishaInventors: Hideyuki Matsubara, Kazunari Nishimoto, Shigeo Murayama, Takao Kawazu
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Patent number: 7315706Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position. The process cartridge includes a movable operation member movable relative to a cartridge frame, wherein when the process cartridge is inserted into the main assembly of the apparatus, the movable operation member is engageable with a fixed engageable member fixed in the main assembly of the apparatus to move relative to the cartridge frame, and is engageable with a displaceable engaging portion of the displaceable member to move the output contact from the retracted position to the electrical connecting position; and an input electrical contact for receiving a voltage for enabling the process device by engagement with the output contact moved to the electrical connecting position.Type: GrantFiled: November 30, 2006Date of Patent: January 1, 2008Assignee: Canon Kabushiki KaishaInventors: Toru Oguma, Shigeo Murayama, Daisuke Abe, Hideyuki Matsubara
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Publication number: 20070223977Abstract: An image heating device includes a pressure-changing mechanism configured to change pressure applied to a heating nip. A cam of the pressure-changing mechanism acting on a pressure-applying mechanism is attached to a rotating shaft of a conveying roller that conveys recording materials. With this, an increase in the cost of the device can be regulated.Type: ApplicationFiled: March 26, 2007Publication date: September 27, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hideyuki Matsubara, Kazunari Nishimoto, Shigeo Murayama, Takao Kawazu
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Publication number: 20070222143Abstract: A holding member is rotatably axially supported to the apparatus main body, holds the sheet feeding unit to a rotational edge, and moves the sheet feeding unit to one of a sheet feeding position and a standby position and a gear train. By transferring the rotation of the opening/closing operation of the feed tray to the holding member through the gear train so that the sheet feeding unit is moved along with the opening/closing operation of the feed tray.Type: ApplicationFiled: February 21, 2007Publication date: September 27, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Shigeo MURAYAMA, Kenichi NAKAO
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Patent number: 7215901Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The main assembly includes an output contact movable between electrical connecting and retracted positions, a displaceable member for moving the output contact, and an elastic function member for elastically urging the displaceable member to urge the output contact toward the retracted position. The cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a movable operation member engageable with a main-assembly fixed engageable member and with the displaceable member to move the output contact from the retracted to the electrical connecting position against the bias of the elastic function member, in interrelation with the movement of the displaceable member, after the engagement with the fixed engageable member when the cartridge is inserted into the main assembly. The cartridge also includes an input electrical contact.Type: GrantFiled: July 12, 2006Date of Patent: May 8, 2007Assignee: Canon Kabushiki KaishaInventors: Daisuke Abe, Toru Oguma, Shigeo Murayama, Hideyuki Matsubara
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Publication number: 20070092285Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position. The process cartridge includes a movable operation member movable relative to a cartridge frame, wherein when the process cartridge is inserted into the main assembly of the apparatus, the movable operation member is engageable with a fixed engageable member fixed in the main assembly of the apparatus to move relative to the cartridge frame, and is engageable with a displaceable engaging portion of the displaceable member to move the output contact from the retracted position to the electrical connecting position; and an input electrical contact for receiving a voltage for enabling the process device by engagement with the output contact moved to the electrical connecting position.Type: ApplicationFiled: November 30, 2006Publication date: April 26, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Toru Oguma, Shigeo Murayama, Daisuke Abe, Hideyuki Matsubara
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Patent number: 7162176Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position. The process cartridge includes a movable operation member movable relative to a cartridge frame, wherein when the process cartridge is inserted into the main assembly of the apparatus, the movable operation member is engageable with a fixed engageable member fixed in the main assembly of the apparatus to move relative to the cartridge frame, and is engageable with a displaceable engaging portion of the displaceable member to move the output contact from the retracted position to the electrical connecting position; and an input electrical contact for receiving a voltage for enabling the process device by engagement with the output contact moved to the electrical connecting position.Type: GrantFiled: September 30, 2005Date of Patent: January 9, 2007Assignee: Canon Kabushiki KaishaInventors: Toru Oguma, Shigeo Murayama, Daisuke Abe, Hideyuki Matsubara
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Publication number: 20060251443Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The main assembly includes an output contact movable between electrical connecting and retracted positions, a displaceable member for moving the output contact, and an elastic function member for elastically urging the displaceable member to urge the output contact toward the retracted position. The cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a movable operation member engageable with a main-assembly fixed engageable member and with the displaceable member to move the output contact from the retracted to the electrical connecting position against the bias of the elastic function member, in interrelation with the movement of the displaceable member, after the engagement with the fixed engageable member when the cartridge is inserted into the main assembly. The cartridge also includes an input electrical contact.Type: ApplicationFiled: July 12, 2006Publication date: November 9, 2006Applicant: Canon Kabushiki KaishaInventors: Daisuke Abe, Toru Oguma, Shigeo Murayama, Hideyuki Matsubara
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Patent number: 7130557Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The main assembly includes an output contact movable between electrical connecting and retracted positions, a displaceable member for moving the output contact, and an elastic function member for elastically urging the displaceable member to urge the output contact toward the retracted position. The cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a movable operation member engageable with a main-assembly fixed engageable member and with the displaceable member to move the output contact from the retracted to the electrical connecting position against the bias of the elastic function member, in interrelation with the movement of the displaceable member, after the engagement with the fixed engageable member when the cartridge is inserted into the main assembly. The cartridge also includes an input electrical contact.Type: GrantFiled: December 9, 2004Date of Patent: October 31, 2006Assignee: Canon Kabushiki KaishaInventors: Daisuke Abe, Toru Oguma, Shigeo Murayama, Hideyuki Matsubara
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Publication number: 20060029416Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position. The process cartridge includes a movable operation member movable relative to a cartridge frame, wherein when the process cartridge is inserted into the main assembly of the apparatus, the movable operation member is engageable with a fixed engageable member fixed in the main assembly of the apparatus to move relative to the cartridge frame, and is engageable with a displaceable engaging portion of the displaceable member to move the output contact from the retracted position to the electrical connecting position; and an input electrical contact for receiving a voltage for enabling the process device by engagement with the output contact moved to the electrical connecting position.Type: ApplicationFiled: September 30, 2005Publication date: February 9, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Toru Oguma, Shigeo Murayama, Daisuke Abe, Hideyuki Matsubara
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Patent number: 6993264Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position. The process cartridge includes a movable operation member movable relative to a cartridge frame, wherein when the process cartridge is inserted into the main assembly of the apparatus, the movable operation member is engageable with a fixed engageable member fixed in the main assembly of the apparatus to move relative to the cartridge frame, and is engageable with a displaceable engaging portion of the displaceable member to move the output contact from the retracted position to the electrical connecting position; and an input electrical contact for receiving a voltage for enabling the process device by engagement with the output contact moved to the electrical connecting position.Type: GrantFiled: December 31, 2003Date of Patent: January 31, 2006Assignee: Canon Kabushiki KaishaInventors: Toru Oguma, Shigeo Murayama, Daisuke Abe, Hideyuki Matsubara
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Publication number: 20050214019Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The main assembly includes an output contact movable between electrical connecting and retracted positions, a displaceable member for moving the output contact, and an elastic function member for elastically urging the displaceable member to urge the output contact toward the retracted position. The cartridge includes an electrophotographic photosensitive drum, a process device actable on the drum, and a movable operation member engageable with a main-assembly fixed engageable member and with the displaceable member to move the output contact from the retracted to the electrical connecting position against the bias of the elastic function member, in interrelation with the movement of the displaceable member, after the engagement with the fixed engageable member when the cartridge is inserted into the main assembly. The cartridge also includes an input electrical contact.Type: ApplicationFiled: December 9, 2004Publication date: September 29, 2005Applicant: Canon Kabushiki KaishaInventors: Daisuke Abe, Toru Oguma, Shigeo Murayama, Hideyuki Matsubara