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公开(公告)号：US10705460B2
公开(公告)日：2020-07-07
申请号：US16574615
申请日：2019-09-18
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
摘要： A fixing device includes a belt, a roller, a heater, and a reflector. The belt is rotatable in a rotational direction. The roller is positioned to be in contact with an outer peripheral surface of the belt so as to form a nip between the roller and the belt. The heater is disposed within an inner circumference of the belt. The reflector is disposed within the inner circumference of the belt. The reflector includes a first portion and a second portion. The first portion is in contact with and protrudes outwardly the belt at a first region downstream with respect to the nip in the rotational direction. The second portion is configured to reflect heat generated by the heater toward an inner surface of the belt at a second region upstream with respect to the nip in the rotational direction.
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公开(公告)号：US10345744B2
公开(公告)日：2019-07-09
申请号：US15980283
申请日：2018-05-15
发明人： Kazuhiko Kikuchi , Osamu Takagi , Chie Miyauchi
摘要： A fixing device according to an embodiment includes an endless belt, a pressure element, a heating member, an adjustment mechanism, and a controller. The pressure element conveys and presses a sheet to the endless belt. The heating member is on the inner side of the belt and has a heat generating element for heating the belt. The adjustment mechanism moves the heating member or the pressure element to adjust the nip width between the heating member and the pressure element. The controller controls the adjustment mechanism so that A>B≥N is satisfied, where A is the nip width during a fixing process in which a colored material is fixed to the sheet, B is the nip width during a heating process conducted before the fixing process, and N is the length of the heat generating element in the sheet conveyance direction.
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公开(公告)号：US20180067429A1
公开(公告)日：2018-03-08
申请号：US15255296
申请日：2016-09-02
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2057
摘要： In accordance with an embodiment, a fixing belt comprises a non-magnetic metal layer and a magnetic metal layer, wherein a thickness of the magnetic metal layer is larger than that of the non-magnetic metal layer.
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公开(公告)号：US09727013B2
公开(公告)日：2017-08-08
申请号：US15350184
申请日：2016-11-14
发明人： Kazuhiko Kikuchi
CPC分类号： G03G15/2032 , G03G15/2046 , G03G15/2053 , G03G15/206 , G03G15/5029 , G03G2215/00734 , G03G2215/00738 , G03G2215/2035 , G03G2215/2061
摘要： A fixing device includes a fixing belt, a nip pad, a press roller, a driving portion, and a heat generation source. The fixing belt has an endless shape. The nip pad is located on an inner circumferential side of the fixing belt. The nip pad presses the fixing belt. The press roller presses the fixing belt along with the nip pad. The driving portion moves the press roller toward the nip pad. The heat generation source causes the fixing belt to generate heat. A control section controls an image forming section and the fixing device. The nip pad includes a protrusion. The protrusion protrudes toward an outer circumference of the fixing belt and a downstream side of the nip. The control section changes a movement amount of a protrusion to the press roller.
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25.发明授权Image forming apparatus that controls an image forming section and a fixing device 有权控制图像形成部和定影装置的图像形成装置公开(公告)号：US09523949B1
公开(公告)日：2016-12-20
申请号：US14729220
申请日：2015-06-03
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2032 , G03G15/2046 , G03G15/2053 , G03G15/206 , G03G15/5029 , G03G2215/00734 , G03G2215/00738 , G03G2215/2035 , G03G2215/2061
摘要： A fixing device includes a fixing belt, a nip pad, a press roller, a driving portion, and a heat generation source. The fixing belt has an endless shape. The nip pad is located on an inner circumferential side of the fixing belt. The nip pad presses the fixing belt. The press roller presses the fixing belt along with the nip pad. The driving portion moves the press roller toward the nip pad. The heat generation source causes the fixing belt to generate heat. A control section controls an image forming section and the fixing device. The nip pad includes a protrusion. The protrusion protrudes toward an outer circumference of the fixing belt and a downstream side of the nip. The control section changes a movement amount of a protrusion to the press roller.
摘要翻译： 定影装置包括定影带，压区，压辊，驱动部和发热源。 定影带有一个无尽的形状。 夹持垫位于定影带的内周侧。 夹持垫压固定带。 压辊与定位带一起按压定影带。 驱动部分使压辊朝向夹持板移动。 发热源导致定影带产生热量。 控制部控制图像形成部和定影装置。 压区包括突起。 突出部朝向定影带的外周和辊隙的下游侧突出。 控制部将突起的移动量变更为压辊。
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公开(公告)号：US20140314457A1
公开(公告)日：2014-10-23
申请号：US14227043
申请日：2014-03-27
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G2215/2035
摘要： According to one embodiment, a fixing device includes an endless heat generating section including a conductive layer, a magnetic-flux generating section configured to generate a magnetic flux and generate an induction current in the conduction layer, a first magnetic-flux regulating section having a first magnetic flux concentration force and configured to regulate the magnetic flux of the magnetic flux generating section, a second magnetic-flux regulating section arranged adjacent to the first magnetic-flux regulating section, having a second magnetic flux concentration force larger than the first magnetic flux concentration force, and configured to regulate the magnetic flux of the magnetic-flux generating section, and an auxiliary heat generating section including a magnetic body arranged in a position opposed to the magnetic-flux generating section via the heat generating section, the position being a region extending across the first magnetic-flux regulating section and the second magnetic-flux regulating section.
摘要翻译： 根据一个实施例，一种固定装置包括一个包括导电层的环形发热部分，一个磁通量产生部分，被配置成产生一个磁通并在导电层中产生一个感应电流;一个第一磁通量调节部分， 第一磁通量集中力并且被配置为调节磁通量产生部分的磁通量;第二磁通量调节部分，布置成与第一磁通量调节部分相邻，具有大于第一磁通量的第二磁通量集中力 集中力，并且被配置为调节磁通量产生部分的磁通量;以及辅助发热部分，其包括经由发热部分布置在与磁通量产生部分相对的位置的磁体，该位置是 区域延伸穿过第一磁通量调节部分和第二磁通量 d磁通量调节部。
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公开(公告)号：US11709447B2
公开(公告)日：2023-07-25
申请号：US17868540
申请日：2022-07-19
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/205 , G03G15/2053 , G03G15/2064
摘要： According to an embodiment, a heater unit includes a substrate. A first heating element is on a first side of the substrate. A second heating element is on a second side of the substrate. A first wiring is on the first side of the substrate and connected to the first heating element. A first electrode is on the first side of the substrate and connected to the first heating element. A second wiring is on the second side of the substrate and connected to the second heating element. A second electrode is on the second side of the substrate and connected to the second heating element via the second wiring. A portion of the second heating element overlaps a first portion of the first heating element.
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公开(公告)号：US11656565B2
公开(公告)日：2023-05-23
申请号：US17707883
申请日：2022-03-29
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2042
摘要： An image forming apparatus includes a fixing unit including a fixing belt having a surface to which a lubricant is applied, a heater contacting the surface and including heating elements arranged along a width direction of the belt and including first end second end heating elements and a central heating element, and a pressing roller capable of pressing and rotating the belt, a power supply configured to supply power to the heating elements, and a controller configured to determine a first amount of power to be supplied to the central heating element and a second amount of power to be supplied to each end heating element such that the first amount is greater than the second amount, and control the power supply to supply the first and second amounts to the central heating element and each end heating element before controlling the pressing roller to rotate.
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公开(公告)号：US11614703B2
公开(公告)日：2023-03-28
申请号：US17667430
申请日：2022-02-08
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
摘要： A heating apparatus includes a cylindrical film and a pressing element that rotates with the cylindrical film and forms a nip with the cylindrical film. A medium is conveyed through the nip from an upstream side to a downstream side. The apparatus further includes a guide member arranged inside the cylindrical film and contacting the cylindrical film, and a substrate arranged inside the cylindrical film and on which a heating element is disposed. A downstream end of the substrate is located downstream of a downstream end of the nip.
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公开(公告)号：US11314187B2
公开(公告)日：2022-04-26
申请号：US17210877
申请日：2021-03-24
发明人： Kazuhiko Kikuchi
IPC分类号： G03G15/20
摘要： A fixing device includes a belt, a roller, a heater, a reflector board, a stay, and a thermally-conductive member. The belt is rotatable in a rotational direction. The roller is positioned to be in contact with an outer surface of the belt so as to form a nip between the roller and the belt. The heater is configured to heat an inner surface of the belt. The reflector board is configured to reflect heat generated by the heater toward the inner surface of the belt. The stay is in contact with the reflector board. The thermally-conducive member is thermally connected between the belt and at least one of the reflector board and the stay. The thermally-conducive member includes a first portion that is in contact with the belt at a first region downstream with respect to the nip in the rotational direction.
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