Patents by Inventor Tadahisa Sugiyama
Tadahisa Sugiyama 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: 11966187Abstract: A feeding apparatus includes a feeding unit, an ion generating unit and a controller. The ion generating unit irradiates the sheet fed by the feeding unit with the ion. The controller acquires an information on the fed sheet and to controls the ion generating unit. The controller operates the ion generating unit in a case that the information of the sheet is a first information, and does not operate the ion generating unit in a case that the information of the sheet is a second information.Type: GrantFiled: June 2, 2022Date of Patent: April 23, 2024Assignee: Canon Kabushiki KaishaInventor: Tadahisa Sugiyama
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Patent number: 11586131Abstract: An image forming apparatus includes an endless image bearing belt, a first roller, a second roller, a rotatable member, a holding member, a feeding unit, and a guiding member. The guiding member is provided on a side downstream of the feeding unit and upstream of a transfer nip with respect to a recording material feeding direction at a position opposing a stretching portion stretched by the first roller and the second roller of the image bearing belt and guides a recording material, to the transfer nip, fed by the feeding unit. The guiding member is fixed to the holding member.Type: GrantFiled: February 11, 2022Date of Patent: February 21, 2023Assignee: Canon Kabushiki KaishaInventors: Naoki Hashimoto, Yutaka Nishimura, Shoko Fujiwara, Tadahisa Sugiyama, Atsushi Takada
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Patent number: 11586130Abstract: An image forming apparatus includes an endless image bearing belt, a first roller, a second roller, a rotatable member, a feeding unit, a first guiding member, and a second material guiding member. The second guiding member is fixed to the first guiding member so as to form a feeding path of a recording material with an interval between the second guiding member and the first guiding member.Type: GrantFiled: February 11, 2022Date of Patent: February 21, 2023Assignee: Canon Kabushiki KaishaInventors: Yutaka Nishimura, Tadahisa Sugiyama, Naoki Hashimoto, Shoko Fujiwara, Atsushi Takada
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Publication number: 20220397858Abstract: A feeding apparatus includes a feeding unit, an ion generating unit and a controller. The ion generating unit irradiates the sheet fed by the feeding unit with the ion. The controller acquires an information on the fed sheet and to controls the ion generating unit. The controller operates the ion generating unit in a case that the information of the sheet is a first information, and does not operate the ion generating unit in a case that the information of the sheet is a second information.Type: ApplicationFiled: June 2, 2022Publication date: December 15, 2022Inventor: Tadahisa Sugiyama
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Publication number: 20220269193Abstract: An image forming apparatus includes an endless image bearing belt, a first roller, a second roller, a rotatable member, a feeding unit, a first recording material guiding member, and a second recording material guiding member. The second recording material guiding member is fixed to the first recording material guiding member so as to form a feeding path of a recording material with an interval between itself and the first recording material guiding member.Type: ApplicationFiled: February 11, 2022Publication date: August 25, 2022Inventors: Yutaka Nishimura, Tadahisa Sugiyama, Naoki Hashimoto, Shoko Fujiwara, Atsushi Takada
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Publication number: 20220269194Abstract: An image forming apparatus includes an endless image bearing belt, a first roller, a second roller, a rotatable member, a holding member, a feeding unit, and a guiding member. The guiding member is provided on a side downstream of the feeding unit and upstream of the transfer nip with respect to a recording material feeding direction at a position opposing a stretching portion stretched by the first roller and the second roller for from the image bearing belt and guides a recording material, to the transfer nip, fed by the feeding unit. The guiding member is fixed to the holding portion.Type: ApplicationFiled: February 11, 2022Publication date: August 25, 2022Inventors: Naoki Hashimoto, Yutaka Nishimura, Shoko Fujiwara, Tadahisa Sugiyama, Atsushi Takada
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Patent number: 10948855Abstract: An image forming apparatus includes a fixing device arranged downstream of a transfer portion and configured to fix a toner image on a sheet; a regulation member arranged upstream of the fixing device and configured to regulate the sheet; a rotary shaft configured to rotatably support the regulation member; an urging member configured to urge the regulation member so as to bring a tip end portion of the regulation member into contact with the transfer portion at a contact portion; and an openable and closable member provided on a main body to open an opening portion, wherein the tip end portion can be rotated from a side opposite to the rotary shaft to a side of the rotary shaft with respect to a straight line extending from the contact portion and contacting the fixing device.Type: GrantFiled: January 2, 2020Date of Patent: March 16, 2021Assignee: Canon Kabushiki KaishaInventor: Tadahisa Sugiyama
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Publication number: 20200218182Abstract: An image forming apparatus, including: a fixing device arranged downstream of a transfer portion and configured to fix a toner image on a sheet; a regulation member arranged upstream of the fixing device and configured to regulate the sheet; a rotary shaft configured to rotatably support the regulation member; an urging member configured to urge the regulation member so as to bring a tip end portion of the regulation member into contact with the transfer portion at a contact portion; and an openable and closable member provided to a main body to open an opening portion, wherein the tip end portion can be rotated from a side opposite to the rotary shaft to a side of the rotary shaft with respect to a straight line extending from the contact portion and contacting the fixing device.Type: ApplicationFiled: January 2, 2020Publication date: July 9, 2020Inventor: Tadahisa Sugiyama
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Publication number: 20190039848Abstract: It is desirable to improve alignment of sheets discharged to a stack tray without increasing the size and cost of the apparatus. A stacking portion which is sloped so that a downstream side is higher than an upstream side in a sheet conveyance direction and on which a sheet discharged by a discharging portion is stacked and a plurality of rotation members which protrudes from an upper face of the stacking portion are provided. At least one of the plurality of rotation members rotates only in a direction opposite to the sheet conveyance direction.Type: ApplicationFiled: July 25, 2018Publication date: February 7, 2019Inventor: Tadahisa Sugiyama
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Patent number: 10073406Abstract: An image forming apparatus includes a main body, a moving part supported movably relative to the main body, a support portion provided in the main body to support the moving part movably, a rack provided in one of the main body and the moving part and having a rack gear, a damper gear provided in the other of the main body and the moving part to be meshed with the rack gear, a damper configured to apply resistance force to rotation of the damper gear, and a restricting portion provided in the other of the main body and the moving part to be in contact with an abutting portion extending along the rack gear in the rack, the restricting portion restricting a position of the rack to prevent the rack gear from separating from the damper gear.Type: GrantFiled: July 14, 2015Date of Patent: September 11, 2018Assignee: Canon Kabushiki KaishaInventors: Tadahisa Sugiyama, Shigeo Doi
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Patent number: 10029869Abstract: A sheet conveyance apparatus includes a rotation unit including a shaft portion and configured to rotate by being pushed by a sheet conveyed, a sensor configured to generate a signal according to a position of the rotation unit in a rotational direction, a first supporting portion configured to rotatably support the shaft portion, a second supporting portion configured to rotatably support the shaft portion, an elastic portion connected to the shaft portion, and configured to extend in an axial direction of the shaft portion, and be elastically deformable in a direction intersecting with the axial direction of the shaft portion, a regulation portion configured to regulate a movement of the rotation unit supported by the first supporting portion and the second supporting portion in the axial direction of the shaft portion by contacting the elastic portion.Type: GrantFiled: January 20, 2016Date of Patent: July 24, 2018Assignee: Canon Kabushiki KaishaInventor: Tadahisa Sugiyama
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Patent number: 10025259Abstract: An image forming apparatus includes a main body, a door unit, and a loading portion that applies a load affecting movement of the door unit. The loading portion includes a rotating member, a damper unit, and an arm portion, which engages with the rotating member to extend and retract along an arc. The damper unit applies the load to the moving door unit such that, when a first arm member of the arm portion is engaged with the rotating member, the door unit can move to a first position at a first opening angle, and when a second arm member of the arm portion is engaged with the rotating member, the door unit can move to a second position at a second opening angle which is greater than the first opening angle. The first and second arm members move relative to each other with movement of the door unit.Type: GrantFiled: October 6, 2015Date of Patent: July 17, 2018Assignee: Canon Kabushiki KaishaInventors: Shigeo Doi, Tadahisa Sugiyama
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Patent number: 9896291Abstract: A sheet conveying apparatus includes a first conveying portion conveying a sheet, a second conveying portion including an abutment portion against which a front end of the sheet conveyed by the first conveying portion abuts and conveying the sheet, a curved guide including a curved portion and forming a curved sheet conveying path between the first and second conveying portions, and a moving portion disposed to overlap widthwise with the curved portion and movable between a projecting position where the moving portion projects to the sheet conveying path and a recede position where the moving portion recedes. The moving portion is moved to from the projecting position to the recede position by being pressed by the sheet as the sheet is conveyed by the first conveying portion in a state in which the front end of the sheet abuts against the abutment portion.Type: GrantFiled: August 21, 2015Date of Patent: February 20, 2018Assignee: Canon Kabushiki KaishaInventor: Tadahisa Sugiyama
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Patent number: 9766586Abstract: A door is held in an open condition by locking a stopper member whose one end is turnably supported by an apparatus body. The stopper member is composed of a base member having a project portion and a turning shaft portion supported by a printer body, and a reinforcing member. The reinforcing member is joined with the base member by a joining mechanism such that, in a case when a force of predetermined magnitude is applied to the door in opening the door, the base member is broken and the reinforcing member holds the door by supporting the project portion and the turning shaft portion of the broken base member.Type: GrantFiled: September 28, 2015Date of Patent: September 19, 2017Assignee: Canon Kabushiki KaishaInventors: Shigeo Doi, Tadahisa Sugiyama
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Patent number: 9488211Abstract: a fastened structure comprising: a first member provided with a female screw; a second member provided with an opening; and a male screw fastening the first member and the second member with each other and including a male screw portion, and a head portion having a bearing surface, wherein the male screw portion is threaded in the female screw through the opening of the second member, wherein the second member is provided with a substantially circular folded portion including a curved surface defining the opening and including a free end having an edge pressed against the bearing surface of the male screw.Type: GrantFiled: June 21, 2013Date of Patent: November 8, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Tadahisa Sugiyama, Tsuyoshi Nagasaki
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Publication number: 20160214816Abstract: A sheet conveyance apparatus includes a rotation unit including a shaft portion and configured to rotate by being pushed by a sheet conveyed, a sensor configured to generate a signal according to a position of the rotation unit in a rotational direction, a first supporting portion configured to rotatably support the shaft portion, a second supporting portion configured to rotatably support the shaft portion, an elastic portion connected to the shaft portion, and configured to extend in an axial direction of the shaft portion, and be elastically deformable in a direction intersecting with the axial direction of the shaft portion, a regulation portion configured to regulate a movement of the rotation unit supported by the first supporting portion and the second supporting portion in the axial direction of the shaft portion by contacting the elastic portion.Type: ApplicationFiled: January 20, 2016Publication date: July 28, 2016Inventor: Tadahisa Sugiyama
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Publication number: 20160102488Abstract: A loading portion applying a load to a movement of an opening/closing unit include an arm portion engaged with the rotating member to cause the rotating member to be rotated according to the movement of the opening/closing unit, the arm portion includes a first arm member that includes a first engagement portion to be engaged with the rotating member and a second arm member that includes a second engagement portion to be engaged with the rotating member, and the first arm member move relatively to the second arm member in conjunction with an opening/closing operation of the opening/closing unit.Type: ApplicationFiled: October 6, 2015Publication date: April 14, 2016Inventors: Shigeo Doi, Tadahisa Sugiyama
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Publication number: 20160098007Abstract: A door is held in an open condition by locking a stopper member whose one end is turnably supported by an apparatus body. The stopper member is composed of a base member having a project portion and a turning shaft portion supported by a printer body, and a reinforcing member. The reinforcing member is joined with the base member by a joining mechanism such that, in a case when a force of predetermined magnitude is applied to the door in opening the door, the base member is broken and the reinforcing member holds the door by supporting the project portion and the turning shaft portion of the broken base member.Type: ApplicationFiled: September 28, 2015Publication date: April 7, 2016Inventors: Shigeo Doi, Tadahisa Sugiyama
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Publication number: 20160060058Abstract: A sheet conveying apparatus includes a first conveying portion conveying a sheet, a second conveying portion including an abutment portion against which a front end of the sheet conveyed by the first conveying portion abuts and conveying the sheet, a curved guide including a curved portion and forming a curved sheet conveying path between the first and second conveying portions, and a moving portion disposed to overlap widthwise with the curved portion and movable between a projecting position where the moving portion projects to the sheet conveying path and a recede position where the moving portion recedes. The moving portion is moved to from the projecting position to the recede position by being pressed by the sheet as the sheet is conveyed by the first conveying portion in a state in which the front end of the sheet abuts against the abutment portion.Type: ApplicationFiled: August 21, 2015Publication date: March 3, 2016Inventor: Tadahisa Sugiyama
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Publication number: 20160018780Abstract: An image forming apparatus includes a main body, a moving part supported movably relative to the main body, a support portion provided in the main body to support the moving part movably, a rack provided in one of the main body and the moving part and having a rack gear, a damper gear provided in the other of the main body and the moving part to be meshed with the rack gear, a damper configured to apply resistance force to rotation of the damper gear, and a restricting portion provided in the other of the main body and the moving part to be in contact with an abutting portion extending along the rack gear in the rack, the restricting portion restricting a position of the rack to prevent the rack gear from separating from the damper gear.Type: ApplicationFiled: July 14, 2015Publication date: January 21, 2016Inventors: Tadahisa Sugiyama, Shigeo Doi