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公开(公告)号：US12055878B2
公开(公告)日：2024-08-06
申请号：US18308633
申请日：2023-04-27
发明人： Kazuhiko Kikuchi , Sasuke Endo , Masaya Tanaka , Ryota Saeki , Kiyotaka Murakami , Kousei Miyashita , Ryosuke Kojima , Yohei Doi , Yuki Kawashima , Eiji Shinohara
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064
摘要： A heating device includes a rotatable film, a heater disposed inside the film and including a substrate that extends along a first direction and having two surfaces opposite to each other, and a heater element on one of the surfaces of the substrate, and a heat conductor including a first portion contacting the other surface of the substrate, and a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the other surface of the substrate. A width of the second portion is wider than the heater element in the second direction.
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2.发明授权公开(公告)号：US11982959B2
公开(公告)日：2024-05-14
申请号：US18332772
申请日：2023-06-12
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2042 , G03G15/2053
摘要： A heating device includes a substrate, one or more heating elements arranged along the substrate, a heat conductor contacting the substrate, a plurality of thermometers each configured to measure a temperature of the heat conductor, and a plurality of thermostats each configured to measure a temperature of the heat conductor and interrupt electrical power supplied to the heating elements. The thermometers and the thermostats are alternately arranged in a longitudinal direction of the substrate.
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公开(公告)号：US11966177B2
公开(公告)日：2024-04-23
申请号：US17727807
申请日：2022-04-25
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2053 , G03G15/2064
摘要： An image forming apparatus includes a fixing unit including a heater including a first surface and a second surface opposite to the first surface, a fixing belt having a surface to which a lubricant is applied and contacting the first surface through the lubricant, a heat conductor contacting the second surface, and a pressing roller capable of pressing and rotating the fixing belt, a power supply configured to supply electric power to the heater, a first thermometer configured to measure temperature of the heat conductor, and a controller configured to determine a first amount of electric power to be supplied to the heater based on the temperature of the heat conductor, and control the power supply to supply the determined first amount of electric power to the heater, before controlling the pressing roller to start rotation.
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公开(公告)号：US11774887B2
公开(公告)日：2023-10-03
申请号：US17591560
申请日：2022-02-02
发明人： Yohei Doi , Eiji Shinohara , Kazuhiko Kikuchi , Sasuke Endo , Masaya Tanaka , Ryota Saeki , Kousei Miyashita , Ryosuke Kojima , Yuki Kawashima , Kiyotaka Murakami
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2053 , G03G2215/2025
摘要： An image processing apparatus includes a fixing unit including a fixing belt, and a heater configured to heat the fixing belt and including a substrate and a heating layer that is formed on the substrate, and a controller configured to, upon detecting an absence of a current flowing through the fixing belt, control the heater to not generate heat.
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公开(公告)号：US11669033B2
公开(公告)日：2023-06-06
申请号：US17696786
申请日：2022-03-16
发明人： Kazuhiko Kikuchi , Sasuke Endo , Masaya Tanaka , Ryota Saeki , Kiyotaka Murakami , Kousei Miyashita , Ryosuke Kojima , Yohei Doi , Yuki Kawashima , Eiji Shinohara
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064
摘要： A heating device includes a rotatable film, a heater including a substrate that extends along a first direction and having two surfaces opposite to each other, and a heater element on one of the surfaces of the substrate, and a heat conductor having first and second surfaces and including a first portion contacting the other surface of the substrate, and a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the other surface of the substrate. A thickness of the first portion of the heat conductor from the first surface to the second surface is greater than a thickness of the second portion from the first surface to the second surface.
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公开(公告)号：US11520262B2
公开(公告)日：2022-12-06
申请号：US17320425
申请日：2021-05-14
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
摘要： According to one embodiment, a fixing device, includes a fixing member having a first surface configured to be pressed against a recording medium and a heater on a second surface of the fixing member. A first heat conducting member contacts aback surface side of the heater, and a second heat conducting member is provided to be moveable between a first state, in which the second heat conducting member is in contact with the first heat conducting member and the second surface of the fixing member, and a second state, in which the second heat conducting member is contacting the first heat conducting member, but separated from the second surface of the fixing member.
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公开(公告)号：US11281132B2
公开(公告)日：2022-03-22
申请号：US16921861
申请日：2020-07-06
发明人： Kiyotaka Murakami , Kazuhiko Kikuchi , Sasuke Endo , Masaya Tanaka , Ryota Saeki , Kousei Miyashita , Ryosuke Kojima , Yohei Doi , Yuki Kawashima , Eiji Shinohara
摘要： A fixing unit or device that can be used in an image forming apparatus includes a first heater element that is formed of a material that increases in electrical resistance with increases in temperature. A controller of the fixing unit is configured to vary a duty ratio of electric power applied to the first heater element during a start-up operation in which the temperature of the first heater element is raised to a target operating temperature. By varying the duty ratio during the start-up operation, changes in the resistance of the first heater element with the heating can be compensated. For example, the duty ratio can be increased during the course of the start-up to achieve the target operating temperature faster.
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公开(公告)号：US11106167B2
公开(公告)日：2021-08-31
申请号：US16868269
申请日：2020-05-06
发明人： Kazuhiko Kikuchi , Osamu Takagi , Chie Miyauchi
IPC分类号： G03G15/20
摘要： A heater includes a heat generating element and a protective layer. The protective layer covers the heat generating element, and at least part of a surface thereof has a convex surface that is convex toward the heat generating element.
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公开(公告)号：US11073776B2
公开(公告)日：2021-07-27
申请号：US16574628
申请日：2019-09-18
发明人： Eiji Shinohara , Kazuhiko Kikuchi , Sasuke Endo , Masaya Tanaka , Ryota Saeki , Kousei Miyashita , Ryosuke Kojima , Yohei Doi , Yuki Kawashima , Kiyotaka Murakami
摘要： An image forming apparatus includes a heater, a fixing device, and a controller. The heater includes a heat generator that generates heat when the heater is turned on. The fixing device may fix a developer image on a surface of an image forming medium using the heat from the heat generator. The controller detects a voltage of a power supply for supplying electric power to the heater, and determines an occurrence of an abnormality in the heater if a voltage drop amount at the time the heater is turned on as compared to a case in which the heater is turned off is smaller than a first threshold value.
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公开(公告)号：US10061239B2
公开(公告)日：2018-08-28
申请号：US15459108
申请日：2017-03-15
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/206 , G03G15/2064 , G03G2215/2032 , G03G2215/2035 , G03G2215/2041
摘要： A fixing device according to an embodiment includes a first rotator, a belt, and a second rotator. The belt forms a nip by abutting onto a surface of the first rotator. The second rotator is disposed to abut onto an inner circumferential surface of the belt. The second rotator presses the belt against the first rotator such that the dynamic frictional force between the inner circumferential surface of the belt and the second rotator becomes equal to or smaller than 0.98 N.
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