Patents by Inventor MISA KAWASHIMA
MISA KAWASHIMA 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: 11982961Abstract: A fixing device includes an endless belt, a rotatable pressing member, a pad member inside of the belt, and a sliding member held by the pad member and sliding on an inner circumferential surface of the belt in a nip. The rotatable pressing member nips and feeds a recording material in the nip in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure. The sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections. A shape of a surface of the sliding layer is a curved surface and a radius of curvature R of the curved surface satisfies 300 ?m?R?850 ?m.Type: GrantFiled: February 9, 2023Date of Patent: May 14, 2024Assignee: Canon Kabushiki KaishaInventors: Hiroki Kawai, Yasuharu Toratani, Hiroshi Miyamoto, Akiyoshi Shinagawa, Ayano Ogata, Daigo Matsuura, Misa Kawashima, Masanobu Tanaka, Asuna Fukamachi
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Patent number: 11960224Abstract: A fixing device includes an endless belt, a rotatable pressing member, a pad member inside of the belt, and a sliding member held by the pad member and sliding on an inner circumferential surface of the belt in a nip. The rotatable pressing member nips and feeds a recording material in the nip in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure. The sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections. A leading end of the plurality of projections is a plane and an average roughness (Ra) of the plane satisfies 0.13 ?m?Ra?1.67 ?m.Type: GrantFiled: February 16, 2023Date of Patent: April 16, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Akiyoshi Shinagawa, Yasuharu Toratani, Hiroshi Miyamoto, Daigo Matsuura, Hiroki Kawai, Ayano Ogata, Masanobu Tanaka, Asuna Fukamachi, Misa Kawashima
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Publication number: 20230393503Abstract: A fixing apparatus includes a heating rotary member and a pressing rotary member, which form a nip portion, at which a toner image is fixed to a recording material, a mixture job is a job with a mixture of recording materials including a recording material with a first grammage and a recording material with a second grammage greater than the first grammage, one of a plurality of modes is performable in the mixture job, in which a maximum value of an amount of toner on the recording material with the first grammage is greater than a maximum value of the amount of toner on the recording material with the second grammage in the first mode whereas the maximum value on the recording material with the first grammage is equal to the maximum value on the recording material with the second grammage in the second mode.Type: ApplicationFiled: March 15, 2023Publication date: December 7, 2023Inventors: DAIGO MATSUURA, HIROKI KAWAI, AYANO OGATA, YASUHARU TORATANI, MISA KAWASHIMA
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Publication number: 20230273555Abstract: A fixing device includes an endless belt, a rotatable pressing member, a pad member inside of the belt, and a sliding member held by the pad member and sliding on an inner circumferential surface of the belt in a nip. The rotatable pressing member nips and feeds a recording material in the nip in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure. The sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections. A shape of a surface of the sliding layer is a curved surface and a radius of curvature R of the curved surface satisfies 300 µm ? R ? 850 µm.Type: ApplicationFiled: February 9, 2023Publication date: August 31, 2023Inventors: HIROKI KAWAI, YASUHARU TORATANI, HIROSHI MIYAMOTO, AKIYOSHI SHINAGAWA, AYANO OGATA, DAIGO MATSUURA, MISA KAWASHIMA, MASANOBU TANAKA, ASUNA FUKAMACHI
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Publication number: 20230273550Abstract: A fixing device includes an endless belt, a rotatable pressing member, a pad member inside of the belt, and a sliding member held by the pad member and sliding on an inner circumferential surface of the belt in a nip. The rotatable pressing member nips and feeds a recording material in the nip in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure. The sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections. A leading end of the plurality of projections is a plane and an average roughness (Ra) of the plane satisfies 0.13 ?m?Ra?1.67 ?m.Type: ApplicationFiled: February 16, 2023Publication date: August 31, 2023Inventors: AKIYOSHI SHINAGAWA, YASUHARU TORATANI, HIROSHI MIYAMOTO, DAIGO MATSUURA, HIROKI KAWAI, AYANO OGATA, MASANOBU TANAKA, ASUNA FUKAMACHI, MISA KAWASHIMA
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Publication number: 20230273554Abstract: A fixing device includes an endless belt, a rotatable pressing member contacting an outer circumferential surface of the belt, and a sliding member inside of the belt. The sliding member forms a nip portion by nipping and feeding the belt between itself and the rotatable pressing member and slides on an inner circumferential surface of the belt. The rotatable pressing member nips and feeds the recording material in the nip portion in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure. The sliding member includes a substrate extending in a widthwise direction of the belt, and the substrate is made of metal and includes a plurality of projections projecting toward the rotatable pressing member.Type: ApplicationFiled: January 30, 2023Publication date: August 31, 2023Inventors: DAIGO MATSUURA, YASUHARU TORATANI, AKIYOSHI SHINAGAWA, HIROSHI MIYAMOTO, AYANO OGATA, HIROKI KAWAI, MASANOBU TANAKA, ASUNA FUKAMACHI, MISA KAWASHIMA
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Publication number: 20230273556Abstract: A fixing device includes a fixing belt configured to heat a recording material, a pressure member configured to press the fixing belt, and a sliding member configured to be in sliding contact with an inner peripheral surface of the fixing belt and being opposed to the pressure member. The pressure member and the fixing belt form a fixing nip portion, and heat and pressure are applied to the recording material at the fixing nip portion to fix a toner image onto the recording material. The sliding member includes a plurality of protrusions on a surface of the sliding member that is in sliding contact with the inner peripheral surface of the fixing belt. The following expressions are satisfied: The fixing belt satisfies the prescribed formula.Type: ApplicationFiled: February 13, 2023Publication date: August 31, 2023Inventors: YASUHARU TORATANI, AKIYOSHI SHINAGAWA, HIROSHI MIYAMOTO, DAIGO MATSUURA, HIROKI KAWAI, AYANO OGATA, ASUNA FUKAMACHI, MASANOBU TANAKA, MISA KAWASHIMA