Patents by Inventor Shohei Tsuzaki
Shohei Tsuzaki 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: 20240126193Abstract: An image forming apparatus includes a first rotatable member, a second rotatable member, an air nozzle, and a pipe. The pipe includes a portion provided in a range overlapping with the first rotatable member and making one reciprocation or more in a case that when a direction crossing a feeding direction of a recording material fed in a nip is a widthwise direction of the first rotatable member, the pipe is viewed in a direction perpendicular to the widthwise direction.Type: ApplicationFiled: September 5, 2023Publication date: April 18, 2024Inventors: YASUHARU TORATANI, SHUTARO SAITO, KEISUKE YOSHIDA, YUYA YAMADA, TAKU ASHIDA, ASUNA FUKAMACHI, SHOHEI TSUZAKI, YUSUKE YAMAGUCHI, HIROSHI MIYAMOTO
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Publication number: 20240126194Abstract: An image forming apparatus includes a first rotatable member, a second rotatable member, an air nozzle, and a pipe. The pipe includes a portion extending along a widthwise direction of the first rotatable member perpendicular to a recording material feeding direction.Type: ApplicationFiled: September 12, 2023Publication date: April 18, 2024Inventors: SHUTARO SAITO, KEISUKE YOSHIDA, YUYA YAMADA, TAKU ASHIDA, ASUNA FUKAMACHI, YUSUKE YAMAGUCHI, SHOHEI TSUZAKI, HIROSHI MIYAMOTO, YASUHARU TORATANI
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Publication number: 20240126197Abstract: An image forming apparatus includes a reception unit to receive a job, heating and pressing rotary members to form a nip portion, and a spraying member having a nozzle and a cylinder. The nozzle discharges air to the heating rotary member and a recording material. During a period after the reception unit receives the job and before a leading edge of a first sheet of the recording material reaches the nip portion, the spraying member performs a spraying operation of spraying air in an amount greater than or equal to a predetermined amount. The air that the spraying member sprays on the first sheet of the recording material during the job is higher in temperature than the air that the spraying member sprays during the period after the reception unit receives the job and before the leading edge of the first sheet of the recording material reaches the nip portion.Type: ApplicationFiled: October 12, 2023Publication date: April 18, 2024Inventors: SHOHEI TSUZAKI, ASUNA FUKAMACHI, YUSUKE YAMAGUCHI, HIROSHI MIYAMOTO, YASUHARU TORATANI, KEISUKE YOSHIDA, SHUTARO SAITO, YUYA YAMADA, TAKU ASHIDA
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Patent number: 11022920Abstract: An image forming apparatus includes a control unit configured to perform a rubbing mode in which a rubbing rotatable member moves from a separation position to an abutment position in a state where a fixing belt is in a stop state. The control unit is configured to control a contact-and-separation mechanism in the rubbing mode such that if a predetermined temperature to which the fixing belt is heated is a first temperature, the rubbing rotatable member moves from the abutment position to the separation position at a timing when a first time has elapsed since the rubbing rotatable member abutted against the surface of the fixing belt, and if the predetermined temperature is a second temperature higher than the first temperature, the rubbing rotatable member moves from the abutment position to the separation position at a timing when a second time shorter than the first time has elapsed.Type: GrantFiled: December 20, 2019Date of Patent: June 1, 2021Assignee: Canon Kabushiki KaishaInventors: Takeshi Kozuma, Keisuke Yoshida, Asuna Fukamachi, Shohei Tsuzaki
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Patent number: 10859953Abstract: An image fixing device for fixing an image on a sheet includes a rotatable fixing film, a heater, a rotatable pressing member, a holding member, and a metal sheet. The heater is provided on an inner surface of the fixing belt. The rotatable pressing member is provided in contact with an outer peripheral surface of the film to press against the heater through the film, thus forming a nip configured to nip and feed the sheet. The holding member includes a guide portion configured to guide the rotation of the fixing film and to hold the heater. The metal sheet covers the heater and an area of guide portion slidable relative to an inner surface of the fixing film. The metal sheet has a thermal conductivity ?10W/(m·° C.) and has a thickness more than 0 ?m and not more than 50 ?m.Type: GrantFiled: October 29, 2019Date of Patent: December 8, 2020Assignee: Canon Kabushiki KaishaInventors: Asuna Fukamachi, Shohei Tsuzaki, Keisuke Yoshida, Takeshi Kozuma
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Publication number: 20200218179Abstract: An image forming apparatus includes a control unit configured to perform a rubbing mode in which a rubbing rotatable member moves from a separation position to an abutment position in a state where a fixing belt is in a stop state. The control unit is configured to control a contact-and-separation mechanism in the rubbing mode such that if a predetermined temperature to which the fixing belt is heated is a first temperature, the rubbing rotatable member moves from the abutment position to the separation position at a timing when a first time has elapsed since the rubbing rotatable member abutted against the surface of the fixing belt, and if the predetermined temperature is a second temperature higher than the first temperature, the rubbing rotatable member moves from the abutment position to the separation position at a timing when a second time shorter than the first time has elapsed.Type: ApplicationFiled: December 20, 2019Publication date: July 9, 2020Inventors: Takeshi Kozuma, Keisuke Yoshida, Asuna Fukamachi, Shohei Tsuzaki
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Publication number: 20200133179Abstract: An image fixing device for fixing an image on a sheet includes a rotatable fixing film; a heater provided on an inner surface of the fixing belt; a rotatable pressing member provided in contact with an outer peripheral surface of the film to press against the heater through the film, thus forming a nip configured to nip and feed the sheet; a holding member including a guide portion configured to guide the rotation of the fixed in the field and to hold the heater; and a metal sheet which covers the heater and an area of guide portion slidable relative to the film and which is slidable on an inner surface of the film. The metal sheet has a thermal conductivity ?10 W/(m·° C.) and has a thickness more than 0 ?m and not more than 50 ?m.Type: ApplicationFiled: October 29, 2019Publication date: April 30, 2020Inventors: Asuna Fukamachi, Shohei Tsuzaki, Keisuke Yoshida, Takeshi Kozuma
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Patent number: 10564578Abstract: A fixing device includes a rotating unit, a heating unit configured to heat the rotating unit, and a pressure member configured to nip a recording material between the rotating unit and the pressure member and to convey the recording material. A control portion is configured to change the rotating unit from a rotating state to a halt state. A setting portion is configured to set a heating temperature of the heating unit in the rotating state according to information of a basis weight of the recording material. In addition, a determining portion is configured to determine whether or not a heating operation of the heating unit in the halt state is to be performed according to the information of the basis weight of the recording material.Type: GrantFiled: March 13, 2019Date of Patent: February 18, 2020Assignee: Canon Finetech Nisca Inc.Inventors: Akihiro Maeda, Shohei Tsuzaki, Hiroshi Morita
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Publication number: 20200033778Abstract: An image heating apparatus includes an endless belt, a rotary member configured to form a nip portion with the endless belt, regulating members for regulating the endless belt from moving in a longitudinal direction by being in contact with longitudinal ends of the endless belt, and a sheet-like heating member. The heating member includes a heat transfer member in contact with the inner surface of the endless belt, and a heating portion located on an opposite side from a side, of the heating member, in contact with the inner surface of the endless belt across the heat transfer member. Both end portions of the heat transfer member are disposed at the same location or outside of both end portions of the heating portion in the longitudinal direction and are disposed inside of both end portions of the rotary member in the longitudinal direction.Type: ApplicationFiled: June 20, 2019Publication date: January 30, 2020Inventors: Shigeru Hirano, Ikuo Nakamoto, Shigeru Tanaka, Akihiro Maeda, Yusuke Yamaguchi, Shohei Tsuzaki, Kenji Endo, Shinsuke Takahashi
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Patent number: 10545442Abstract: An image heating apparatus includes an endless belt, a rotary member configured to form a nip portion with the endless belt, regulating members for regulating the endless belt from moving in a longitudinal direction by being in contact with longitudinal ends of the endless belt, and a sheet-like heating member. The heating member includes a heat transfer member in contact with the inner surface of the endless belt, and a heating portion located on an opposite side from a side, of the heating member, in contact with the inner surface of the endless belt across the heat transfer member. Both end portions of the heat transfer member are disposed at the same location or outside of both end portions of the heating portion in the longitudinal direction and are disposed inside of both end portions of the rotary member in the longitudinal direction.Type: GrantFiled: June 20, 2019Date of Patent: January 28, 2020Assignee: Canon Kabushiki KaishaInventors: Shigeru Hirano, Ikuo Nakamoto, Shigeru Tanaka, Akihiro Maeda, Yusuke Yamaguchi, Shohei Tsuzaki, Kenji Endo, Shinsuke Takahashi
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Publication number: 20190212680Abstract: A fixing device includes a rotating unit, a heating unit configured to heat the rotating unit, and a pressure member configured to nip a recording material between the rotating unit and the pressure member and to convey the recording material. A control portion is configured to change the rotating unit from a rotating state to a halt state. A setting portion is configured to set a heating temperature of the heating unit in the rotating state according to information of a basis weight of the recording material. In addition, a determining portion is configured to determine whether or not a heating operation of the heating unit in the halt state is to be performed according to the information of the basis weight of the recording material.Type: ApplicationFiled: March 13, 2019Publication date: July 11, 2019Inventors: Akihiro Maeda, Shohei Tsuzaki, Hiroshi Morita
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Patent number: 10274877Abstract: A fixing device includes a rotating unit, a heating unit configured to heat the rotating unit, and a pressure member configured to nip a recording material between the rotating unit and the pressure member and to convey the recording material. In addition, a control portion is configured to variably control, when the rotating unit is changed from a rotating state to a halt state, a heating temperature of the heating unit in the halt state according to the heating temperature of the heating unit in the rotating state.Type: GrantFiled: September 20, 2017Date of Patent: April 30, 2019Assignee: Canon Finetech Nisca Inc.Inventors: Akihiro Maeda, Shohei Tsuzaki, Hiroshi Morita
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Publication number: 20180088501Abstract: Disclosed is a fixing device, including: a rotating unit; a heating unit configured to heat the rotating unit; a pressure member configured to nip a recoding material between the rotating unit and the pressure member and to convey the recoding material; and a control portion configured to variably control, when the rotating unit is changed from a rotating state to a halt state, a heating temperature of the heating unit in the halt state according to a heating temperature of the heating unit in the rotating state.Type: ApplicationFiled: September 20, 2017Publication date: March 29, 2018Inventors: Akihiro Maeda, Shohei Tsuzaki, Hiroshi Morita