Patents by Inventor Mitsuru Hasegawa
Mitsuru Hasegawa 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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Publication number: 20210191298Abstract: A fixing device for fixing a toner image on a sheet includes a rotatable fixing belt; a heating roller training the belt around; a pressing pad of resin material provided inside of the belt; a rotatable pressing member contacting an outer peripheral surface of the belt and pressing against the pad through the belt to form a nip configured to nip and feed the sheet; a supporting metal stay supporting the pad and including a planar bottom surface faced to the pad; and projected portions integrally molded with the pad and provided along a widthwise direction of the pad, the projected portions projecting and contacting to the bottom surface such that the pad is supported by the stay. A contact area between the projections and the bottom surface is not less than 5% and not more than 40% of the area of the bottom surface.Type: ApplicationFiled: December 16, 2020Publication date: June 24, 2021Inventors: Rikiya Takemasa, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Youichi Chikugo, Mitsuru Hasegawa, Hiroki Kawai, Suguru Takeuchi, Ayano Ogata, Yasuharu Toratani
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Publication number: 20210191299Abstract: A toner image fixing device include a fixing belt; a heating roller training the belt around; a pressing pad of resin material provided inside the belt; a rotatable pressing member contacting the belt and pressing against the pad through the belt to form a nip for nipping and feeding the sheet; a supporting stay supporting the pad and including a surface contacting the pad, one of the pad and the stay being provided with a projection, and the other being provided with a recess engaged with the projection at an engaging position; and a separation plate provided without contact to the belt at a position opposed to the pad downstream of the nip in the sheet feeding direction. A distance between the engaging position and a downstream end of the pad is 0-35% of a length of the pad measured along the feeding direction.Type: ApplicationFiled: December 16, 2020Publication date: June 24, 2021Inventors: Rikiya Takemasa, Youichi Chikugo, Hidekazu Tatezawa, Kenichi Tanaka, Yutaro Tsuno, Mitsuru Hasegawa, Hiroki Kawai, Suguru Takeuchi, Ayano Ogata, Yasuharu Toratani
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Patent number: 11027338Abstract: In an embodiment, a cutting insert including a base member, a first face, a second face, a cutting edge, and a nose portion. The base member includes a coating layer on at least a part thereof. The first face has corner portions. The second face is adjacent to the first face. The cutting edge is on at least a part of the ridgeline portion of the first face and the second face, and includes first and second cutting edges. The first cutting edge is on the coating layer and has a C chamfered surface with a first width of 5 ?m to 30 ?m in the front view of the first face and a chamfer angle of 35° to 50°. The nose portion is at the corner portions between the first cutting edge and the second cutting edge.Type: GrantFiled: March 18, 2016Date of Patent: June 8, 2021Assignee: KYOCERA CorporationInventor: Mitsuru Hasegawa
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Publication number: 20210141322Abstract: A fixing device includes a rotatable fixing belt, a pad, a rotatable pressing member, a pressing member driving source, an auxiliary driving roller, and a transmission mechanism for transmitting a driving force from the pressing member during source to the auxiliary driving roller, wherein a peripheral speed of the auxiliary driving roller is faster than a peripheral speed of the pressing member, and a steering roller provided so as to stretch the fixing belt at the inner surface of the fixing belt in a position downstream of the auxiliary driving roller and upstream the pad with respect to a rotational direction of the fixing belt. The steering roller adjusts a position of the fixing belt with respect to a widthwise direction of the fixing belt by inclining the fixing belt so as to be positioned within a predetermined range.Type: ApplicationFiled: November 10, 2020Publication date: May 13, 2021Inventors: Hidekazu Tatezawa, Youichi Chikugo, Rikiya Takemasa, Kenichi Tanaka, Yutaro Tsuno, Mitsuru Hasegawa, Suguru Takeuchi, Hiroki Kawai, Yasuharu Toratani, Ayano Ogata
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Patent number: 10955775Abstract: An image fixing device includes a rotatable fixing belt, a pressing roller, a nip forming member, a heating roller, a cooling fan, a temperature sensor, and a controller. The nip forming member contacts an inner surface of the fixing belt to sandwich the fixing belt between the pressing roller to form a nip. The heating roller stretches the fixing belt. The cooling fan cools the fixing belt and is opposite to the belt at a position downstream of the heating roller and upstream of the nip forming member in the rotational movement direction of the fixing belt. The temperature sensor detects a temperature of the fixing belt and is provided at a position downstream of the cooling fan and upstream of the nip. The controller controls the power supplied to the heater on the basis of an output of the temperature sensor.Type: GrantFiled: July 30, 2019Date of Patent: March 23, 2021Assignee: Canon Kabushiki KaishaInventors: Hiroki Kawai, Mitsuru Hasegawa, Asuna Fukamachi, Akiyoshi Shinagawa, Suguru Takeuchi
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Patent number: 10871735Abstract: A fixing device including a fixing belt having a maximum curvature in a rotational direction of the fixing belt. The number of times the fixing belt is bent when a temperature of the fixing belt is equal to or lower than a glass transition temperature of the fixing belt surface material is controlled to operate within a specified range.Type: GrantFiled: October 30, 2019Date of Patent: December 22, 2020Assignee: Canon Kabushiki KaishaInventors: Hiroki Kawai, Mitsuru Hasegawa, Suguru Takeuchi
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Patent number: 10845742Abstract: An image forming apparatus includes a fixing unit and a control unit. The fixing unit includes a rotating endless belt, a rotary member, a heating member, a driving unit, and a separation member arranged facing a circumference of the endless belt and configured to separate the recording material, after passing through the nip portion, from the endless belt. The control unit is configured to control the driving unit such that the endless belt stops along with an end of a fixing processing and rotates when a temperature of the endless belt passes a glass transition temperature of the endless belt from higher than the glass transition temperature of the endless belt to lower than the glass transition temperature of the endless belt.Type: GrantFiled: March 18, 2020Date of Patent: November 24, 2020Assignee: Canon Kabushiki KaishaInventors: Hiroki Kawai, Mitsuru Hasegawa, Suguru Takeuchi
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Patent number: 10831140Abstract: An image forming apparatus includes an image forming portion capable of forming a toner image on an envelope including a flap; a stacking portion configured to stack the envelope; a fixing portion configured to fix the toner image on the envelope; a display portion configured to display information; and a controller configured to control the display portion so that when a double-side mode in which the images are formed on the double sides of the envelope is selected, a stacking method in which the envelope is stacked on the stacking portion so as to fix the image on a flap-formed side when the envelope first passes through the fixing portion is displayed at the display portion.Type: GrantFiled: October 21, 2019Date of Patent: November 10, 2020Assignee: Canon Kabushiki KaishaInventors: Daigo Matsuura, Yasuharu Chiyoda, Shigeru Tanaka, Mitsuru Hasegawa, Yusuke Yamaguchi, Shigeru Hirano
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Publication number: 20200310309Abstract: An image forming apparatus includes a fixing unit and a control unit. The fixing unit includes a rotating endless belt, a rotary member, a heating member, a driving unit, and a separation member arranged facing a circumference of the endless belt and configured to separate the recording material, after passing through the nip portion, from the endless belt. The control unit is configured to control the driving unit such that the endless belt stops along with an end of a fixing processing and rotates when a temperature of the endless belt passes a glass transition temperature of the endless belt from higher than the glass transition temperature of the endless belt to lower than the glass transition temperature of the endless belt.Type: ApplicationFiled: March 18, 2020Publication date: October 1, 2020Inventors: Hiroki Kawai, Mitsuru Hasegawa, Suguru Takeuchi
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Publication number: 20200133174Abstract: A maximum curvature in a rotational direction of a fixing belt and the number of times of bendings when a temperature of the fixing belt is equal to or lower than a glass transition temperature of the fixing belt surface material are specified, and the fixing belt controlled to operate within the specified range.Type: ApplicationFiled: October 30, 2019Publication date: April 30, 2020Inventors: Hiroki Kawai, Mitsuru Hasegawa, Suguru Takeuchi
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Publication number: 20200133184Abstract: An image forming apparatus includes an image forming portion capable of forming a toner image on an envelope including a flap; a stacking portion configured to stack the envelope; a fixing portion configured to fix the toner image on the envelope; a display portion configured to display information; and a controller configured to control the display portion so that when the double-side mode in which the images are formed on the double sides of the envelope is selected, a stacking method in which the envelope is stacked on the stacking portion so as to fix the image on a flap-formed side when the envelope first passes through the fixing portion is displayed at the display portion.Type: ApplicationFiled: October 21, 2019Publication date: April 30, 2020Inventors: Daigo Matsuura, Yasuharu Chiyoda, Shigeru Tanaka, Mitsuru Hasegawa, Yusuke Yamaguchi, Shigeru Hirano
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Patent number: 10627751Abstract: An image heating apparatus includes a fixing member, a pressing member, a fan, and a controller. When a mixed job including a first image forming step for continuously forming images on recording materials having a first basis weight and including a second image forming step, subsequent to the first image forming step, for continuously forming the images on recording materials having a second basis weight is executed, the controller switches, before a final recording material in the first image forming step completely passes through the nip, the operation of the fan to an operation of the fan for making a temperature of the pressing member higher than the temperature of the pressing member when the images are formed on the recording materials having the first basis weight.Type: GrantFiled: June 7, 2019Date of Patent: April 21, 2020Assignee: Canon Kabushiki KaishaInventors: Mitsuru Hasegawa, Akiyoshi Shinagawa, Asuna Fukamachi, Suguru Takeuchi, Hiroki Kawai
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Patent number: 10576218Abstract: A syringe includes a barrel, a plunger, an injection needle, and an injection needle safety instrument. The injection needle safety instrument has a base portion fixed to the barrel, a cover portion which can cover a pointed end of a needle tube of the injection needle, and a hinge portion which pivotably couples the base portion and the cover portion. The cover portion is constructed to be pivotable between a first position at which the cover portion is held to the base portion as a first locked portion is locked by a locking portion of the base portion and a second position at which the cover portion covers the pointed end of the needle tube and is held to the injection needle as a second locked portion is locked to the same. The cover portion is tilted toward the barrel in the first position.Type: GrantFiled: February 12, 2015Date of Patent: March 3, 2020Assignee: NIPRO CORPORATIONInventor: Mitsuru Hasegawa
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Patent number: 10578999Abstract: An image forming apparatus includes an image formation unit, an image heating unit, a placement unit, and a control unit. The image heating unit heats an image formed by image formation unit on the recording material that was placed on the placement unit. If an envelope is placed on the placement unit with a flap of the envelope in a direction perpendicular to a conveyance direction of a recording material, the control unit executed control to automatically execute two-sided printing on the envelope such that images formed on a first and a surface of the envelope are heated by the image heating unit. If an envelope is placed on the placement unit with a flap of the envelope in the conveyance direction of the recording material, the control unit executes control to inhibit execution of two-sided printing on the envelope.Type: GrantFiled: July 11, 2019Date of Patent: March 3, 2020Assignee: Canon Kabushiki KaishaInventors: Shigeru Hirano, Shigeru Tanaka, Yasuharu Chiyoda, Daigo Matsuura, Mitsuru Hasegawa, Yusuke Yamaguchi
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Patent number: 10576215Abstract: A pre-filled syringe includes: a cylindrical container, a front end-side gasket; a rear end-side gasket; an intermediate gasket partitioning an inside of the cylindrical container into a front chamber and a rear chamber; a plunger; a medical drug contained in the front chamber, and a liquid drug contained in the rear chamber. In a state where the plunger is pushed in, a bypass portion included in the cylindrical container faces a groove portion provided in the intermediate gasket, thereby allowing communication between the front chamber and the rear chamber therethrough, so that the medical drug and the liquid drug are mixed, and a liquid mixture is discharged. The pre-filled syringe further includes a movement limiting mechanism for limiting movement of the plunger such that a tail end of the rear end-side gasket does not reach the bypass portion.Type: GrantFiled: November 5, 2014Date of Patent: March 3, 2020Assignee: NIPRO CORPORATIONInventors: Mitsuru Hasegawa, Minoru Honda
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Publication number: 20200041940Abstract: An image fixing device includes a rotatable fixing belt; a pressing roller forming a nip for feeding a sheet; a nip forming member contacted to an inner surface of the fixing belt to sandwich the fixing belt between the pressing roller to form the nip; a heating roller stretching the fixing belt; a cooling fan, for cooling the fixing belt, provided opposed to the belt at a position downstream of the heating roller and upstream of the nip forming member in the rotational movement direction of the fixing belt; a temperature sensor, for detecting a temperature of the fixing belt, provided at the position downstream of the cooling fan and upstream of the nip; and a controller for controlling power supply to the heater on the basis of an output of the temperature sensor.Type: ApplicationFiled: July 30, 2019Publication date: February 6, 2020Inventors: Hiroki Kawai, Mitsuru Hasegawa, Asuna Fukamachi, Akiyoshi Shinagawa, Suguru Takeuchi
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Publication number: 20200033772Abstract: An image forming apparatus includes an image formation unit, an image heating unit, a placement unit, and a control unit. The image heating unit heats an image formed by image formation unit on the recording material that was placed on the placement unit. If an envelope is placed on the placement unit with a flap of the envelope in a direction perpendicular to a conveyance direction of a recording material, the control unit executed control to automatically execute two-sided printing on the envelope such that images formed on a first and a surface of the envelope are heated by the image heating unit. If an envelope is placed on the placement unit with a flap of the envelope in the conveyance direction of the recording material, the control unit executes control to inhibit execution of two-sided printing on the envelope.Type: ApplicationFiled: July 11, 2019Publication date: January 30, 2020Inventors: Shigeru Hirano, Shigeru Tanaka, Yasuharu Chiyoda, Daigo Matsuura, Mitsuru Hasegawa, Yusuke Yamaguchi
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Publication number: 20190377287Abstract: An image heating apparatus includes a fixing member, a pressing member, a fan, and a controller. When a mixed job including a first image forming step for continuously forming images on recording materials having a first basis weight and including a second image forming step, subsequent to the first image forming step, for continuously forming the images on recording materials having a second basis weight is executed, the controller switches, before a final recording material in the first image forming step completely passes through the nip, the operation of the fan to an operation of the fan for making a temperature of the pressing member higher than the temperature of the pressing member when the images are formed on the recording materials having the first basis weight.Type: ApplicationFiled: June 7, 2019Publication date: December 12, 2019Inventors: Mitsuru Hasegawa, Akiyoshi Shinagawa, Asuna Fukamachi, Suguru Takeuchi, Hiroki Kawai
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Patent number: 10241433Abstract: An image forming apparatus includes a reading configured to read a shape of a sheet to be used for image formation, and an original sheet carrying an original image, and an image forming portion configured to form a toner image, corresponding to the original image read by the reading portion, on the sheet to be used for image formation. A fixing portion is configured to fix the toner image, formed by the image forming portion, to the sheet to be used for image formation. In addition, a controller is configured to control a fixing condition of the fixing portion in accordance with the shape of the sheet to be used for image formation read by the reading portion.Type: GrantFiled: March 23, 2018Date of Patent: March 26, 2019Assignee: Canon Kabushiki KaishaInventors: Shigeru Tanaka, Yasuharu Chiyoda, Daigo Matsuura, Mitsuru Hasegawa, Yusuke Yamaguchi, Shigeru Hirano
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Publication number: 20180284633Abstract: An image forming apparatus includes a reading portion for reading a shape of a first sheet, said reading portion having a function of reading a second sheet carrying an original image; an image forming portion for forming a toner image corresponding to the original image read by said reading portion; a fixing portion for fixing the toner image formed by said image forming portion; and a controller for controlling a fixing condition of said fixing portion in accordance with the shape of the first sheet read by said reading portion.Type: ApplicationFiled: March 23, 2018Publication date: October 4, 2018Inventors: Shigeru Tanaka, Yasuharu Chiyoda, Daigo Matsuura, Mitsuru Hasegawa, Yusuke Yamaguchi, Shigeru Hirano