Patents by Inventor Minoru Kawanishi
Minoru Kawanishi 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: 11447354Abstract: 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: April 16, 2020Date of Patent: September 20, 2022Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20200239256Abstract: 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: April 16, 2020Publication date: July 30, 2020Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 10662013Abstract: 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 20, 2018Date of Patent: May 26, 2020Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20190092593Abstract: 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 20, 2018Publication date: March 28, 2019Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20180009617Abstract: 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: September 21, 2017Publication date: January 11, 2018Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Patent number: 9796550Abstract: 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: March 24, 2016Date of Patent: October 24, 2017Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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Publication number: 20160200536Abstract: 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: March 24, 2016Publication date: July 14, 2016Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
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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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Patent number: 9102483Abstract: A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.Type: GrantFiled: March 18, 2013Date of Patent: August 11, 2015Assignee: Canon Kabushiki KaishaInventors: Takehito Osada, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
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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: 9022381Abstract: An image forming apparatus includes a sheet feeding device having a separation pad holding unit, a separation pad fixing unit, and a compression unit while vibration damping unit(such as a sponge member and a Mylar member) that is attached to the compression unit does not contact the separation pad holding unit and the separation pad fixing unit.Type: GrantFiled: January 7, 2014Date of Patent: May 5, 2015Assignee: Canon Kabushiki KaishaInventors: Shota Kase, Minoru Kawanishi, Hirotaka Ishii, Keisuke Fujita, Akinori Yokota
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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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Patent number: 8971730Abstract: An image forming apparatus to which a cartridge including first and second cartridge contacts is detachably mountable, includes: a guiding member for guiding the cartridge to a positioning portion provided in a main assembly of the image forming apparatus; a first main assembly contact contactable to the first cartridge contact when the cartridge is positioned partway toward the positioning portion and is positioned in the positioning portion; a second main assembly contact contactable to the second cartridge contact when the cartridge is positioned partway toward the positioning portion; a third main assembly contact contactable to the second cartridge contact only when the cartridge is positioned in the positioning portion; and a control portion for detecting presence or absence of the cartridge in the main assembly and a mounted state of the cartridge by being electrically connected with the first, second and third main assembly contacts.Type: GrantFiled: November 21, 2013Date of Patent: March 3, 2015Assignee: Canon Kabushiki KaishaInventors: Ryota Shibuya, Minoru Kawanishi
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Patent number: 8849178Abstract: A sheet detecting apparatus including: a sheet detecting member having a plurality of abutment surfaces in a peripheral direction thereof, the sheet detecting member being rotated by a conveyed sheet abutting against one of the plurality of abutment surfaces; a detection portion which operates in association with the sheet detecting member; a sensor which generates a signal based on a position of the detection portion; and an urging portion which generates an urging force for positioning the one of the plurality of abutment surfaces of the sheet detecting member in a waiting position in which the leading edge of a sheet conveyed by a conveying portion abuts against the one of the plurality of abutment surfaces, and thereafter the urging portion switching the urging force to an urging force for positioning, in the waiting position, another one of the plurality of abutment surfaces against which a succeeding sheet abuts.Type: GrantFiled: February 29, 2012Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Yohei Suzuki
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Patent number: 8807559Abstract: A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.Type: GrantFiled: September 14, 2011Date of Patent: August 19, 2014Assignee: Canon Kabushiki KaishaInventors: Takehito Osada, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
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Publication number: 20140197592Abstract: An image forming apparatus includes a sheet feeding device having a separation pad holding unit, a separation pad fixing unit, and a compression unit while vibration damping unit(such as a sponge member and a Mylar member) that is attached to the compression unit does not contact the separation pad holding unit and the separation pad fixing unit.Type: ApplicationFiled: January 7, 2014Publication date: July 17, 2014Inventors: Shota Kase, Minoru Kawanishi, Hirotaka Ishii, Keisuke Fujita, Akinori Yokota
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Publication number: 20140153936Abstract: An image forming apparatus to which a cartridge including first and second cartridge contacts is detachably mountable, includes: a guiding member for guiding the cartridge to a positioning portion provided in a main assembly of the image forming apparatus; a first main assembly contact contactable to the first cartridge contact when the cartridge is positioned partway toward the positioning portion and is positioned in the positioning portion; a second main assembly contact contactable to the second cartridge contact when the cartridge is positioned partway toward the positioning portion; a third main assembly contact contactable to the second cartridge contact only when the cartridge is positioned in the positioning portion; and a control portion for detecting presence or absence of the cartridge in the main assembly and a mounted state of the cartridge by being electrically connected with the first, second and third main assembly contacts.Type: ApplicationFiled: November 21, 2013Publication date: June 5, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Ryota Shibuya, Minoru Kawanishi
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Patent number: 8740215Abstract: A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.Type: GrantFiled: March 18, 2013Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Kenji Watanabe, Yohei Suzuki, Motohiro Furusawa, Minoru Kawanishi
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Patent number: 8727339Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.Type: GrantFiled: April 1, 2013Date of Patent: May 20, 2014Assignee: Canon Kabushiki KaishaInventors: Akira Matsushima, Yasuhiro Uchida, Shunsuke Okazaki, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
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Patent number: 8682240Abstract: A printer includes a fixing device that fixes a toner image formed on a sheet and a sheet delivery roller pair for delivering the sheet on which the toner image is fixed by the fixing device onto a sheet delivery tray placed outside of a printer main body. The printer includes a supporting member that supports an upstream edge portion of the sheet in a delivery direction delivered from the sheet delivery roller pair so that the upstream edge portion does not fall down on the sheet delivery tray. The printer includes a blower unit that blows air along a lower surface of the sheet supported by the supporting member from the upstream edge portion of the sheet in the delivery direction toward a downstream edge portion of the sheet in the delivery direction.Type: GrantFiled: March 8, 2010Date of Patent: March 25, 2014Assignee: Canon Kabushiki KaishaInventors: Taku Fukita, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa