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公开(公告)号：US12070925B2
公开(公告)日：2024-08-27
申请号：US17554192
申请日：2021-12-17
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroki Muramatsu , Ryo Ishifuji , Yohei Miyauchi , Yasuharu Notoya , Yusuke Baba , Masaaki Takahashi , Naoko Kasai
CPC classification number: B32B27/285 , B32B1/08 , B32B27/304 , B32B33/00 , G03G15/2057 , B32B2260/02 , B32B2260/046 , B32B2307/514 , B32B2433/00
Abstract: Provided is a fixing rotating member capable of maintaining high toner releasability over longer periods of time than in conventional instances and that is capable of maintaining abrasion resistance against paper; the fixing rotating member comprises a base layer, an elastic layer, and a surface layer, in this order; the surface layer containing a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer and a perfluoropolyether; the tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer having pores formed therein; the surface layer has pores with openings at a first surface thereof, and constituting an outer surface of the fixing rotating member; at least part of the pores containing the perfluoropolyether; a content of the perfluoropolyether in the surface layer is 20 mass % to 60 mass %; and a degree of orientation A of molecules of the tetrafluoroethylene-perfluoroalkyl vinyl ether in a direction perpendicular to a circumferential direction of the surface layer is 35 to 75%.
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公开(公告)号：US20230031844A1
公开(公告)日：2023-02-02
申请号：US17869642
申请日：2022-07-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroto Sugimoto , Naoki Akiyama , Yasuhiro Miyahara , Noriaki Kobayashi , Hiroki Muramatsu , Akeshi Asaka
IPC: G03G15/20
Abstract: A fixing belt includes a base member containing a metal, a sliding layer containing a filler and formed on a base member inner side, and a separation layer formed on a base member outer side. Assume that (i) a sliding layer cross section is obtained by cutting the sliding layer along a sliding layer thickness direction and is divided into sections each having a length that is the same as a sliding layer thickness in a direction perpendicular to the thickness direction, and (ii) a ratio of a filler area to a sliding layer area in each cross section sections is an area ratio. A period coefficient is calculated using the formula (Ave% - Min%)/Ave%, where an average of area ratios of filler areas in all the sections is Ave% and a minimum of the area ratios is Min%, and the calculated period coefficient is 0.6 or more.
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公开(公告)号：US11137707B2
公开(公告)日：2021-10-05
申请号：US16444216
申请日：2019-06-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Akeshi Asaka , Naoki Akiyama , Hiroto Sugimoto , Hiroki Muramatsu , Yasuhiro Miyahara , Noriaki Kobayashi
Abstract: A fixing apparatus includes an endless belt, and a pressing member including a base body and an elastic layer formed on the base body. A plurality of pore portions connected to each other are provided in the elastic layer. In a case where a binary image is generated from a three-dimensional image of the elastic layer, a threshold value X μm corresponding to opening processing with which a number of pores derived from the pore portions takes a maximum value is obtained, and then pores derived from the pore portions in the elastic layer are extracted by performing opening processing with a threshold value of 2X μm, an average value of angles θ is 120° or larger and smaller than 150°.
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公开(公告)号：US20160101952A1
公开(公告)日：2016-04-14
申请号：US14877039
申请日：2015-10-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kenjiro Sugaya , Osamu Sugino , Hiroki Muramatsu , Masahiro Tsujibayashi , Michiaki Endo , Teppei Nagata , Rikiya Takemasa
CPC classification number: B65H5/06 , B65H5/062 , B65H2301/511 , B65H2301/51232 , B65H2601/51
Abstract: A sheet conveying apparatus includes a sheet conveying path through which a sheet is conveyed, and a burr pushing portion provided on the sheet conveying path and pushing down a burr, formed at one side edge in a width direction orthogonal to a sheet conveying direction of the sheet, in the width direction. The burr pushing portion includes a contact portion coming into contact with the burrs while inclining with respect to the side edge of the sheet conveyed thereto.
Abstract translation: 片材输送装置包括片材输送路径，通过该片材输送路径，以及设置在片材输送路径上并向下压毛刺的毛刺推动部，该毛刺推动部形成在与片材输送方向正交的宽度方向的一个侧边缘处 片材，宽度方向。 毛刺推动部分包括与毛刺接触的接触部分，同时相对于输送到其上的片材的侧边倾斜。
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公开(公告)号：US20140248071A1
公开(公告)日：2014-09-04
申请号：US14279545
申请日：2014-05-16
Applicant: CANON KABUSHIKI KAISHA
Inventor： Katsuhisa Matsunaka , Yutaka Arai , Jun Miura , Jiro Ishizuka , Shuichi Tamura , Ryo Yashiro , Hiroto Sugimoto , Naoki Akiyama , Kenji Hashimoto , Yasuhiro Miyahara , Hiroki Muramatsu , Koji Sato
IPC: G03G15/20
CPC classification number: G03G15/2057 , G03G15/2017
Abstract: Provided is a fixing device whose required heat generation amount can be obtained with a smaller amount of a microwave absorbing material, hence start-up (warm-up) time for achieving fixable temperature of the fixing device can be shortened without impairing characteristics such as flexibility, releasing property, durability. The fixing device comprises: a heating member; a pressurizing member; and a microwave generating unit, the fixing device being configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member, wherein: the heating member includes a heat generating layer for generating heat with microwave generated by the microwave generating unit; and the heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 μm, and in Raman spectrum, an absorption peak resulting from graphite structure.
Abstract translation: 提供了一种定影装置，其能够用较少量的微波吸收材料获得所需的发热量，因此可以缩短用于实现定影装置的可固定温度的启动（预热）时间，而不会损害诸如柔性的特性 ，释放性能，耐用性。 定影装置包括：加热构件; 加压构件; 微波发生单元，所述定影装置被配置为通过使所述记录材料通过所述加热构件和所述加压构件之间形成的辊隙而将未定影调色剂固定在记录材料上，其中：所述加热构件包括用于产生 用微波产生单元产生的微波加热; 并且发热层含有平均纤维直径为80-150nm，平均纤维长度为6-10μm的拉曼光谱，由石墨结构产生的吸收峰的高分子化合物和碳纤维。
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Patent Agency Ranking
公开(公告)号：US12235602B2
公开(公告)日：2025-02-25
申请号：US18484639
申请日：2023-10-11
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroki Muramatsu , Noriaki Kobayashi , Tomoyo Miyakai , Ryo Ishifuji
IPC: G03G15/20
Abstract: A fixing belt having an endless shape includes a base layer having an endless shape, an elastic layer on an outer peripheral surface of the base layer, and a surface layer on an outer peripheral surface of the elastic layer, the elastic layer containing a rubber and fillers dispersed in the rubber, the fillers containing heat conductive fillers, an entire thickness of the elastic layer is from 100 μm to 3,000 μm, a content ratio of the fillers with respect to the entirety of the elastic layer being 35% by volume or more, a content ratio of the fillers in a region A being less than 35% by volume with respect to the region A, and the entirety of the elastic layer having a thermal conductivity of 0.4 W/(m·K) or more in a thickness direction thereof.
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公开(公告)号：US11644777B2
公开(公告)日：2023-05-09
申请号：US17826632
申请日：2022-05-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryo Ishifuji , Hiroki Muramatsu , Yasuharu Notoya , Yohei Miyauchi , Naoko Kasai , Yusuke Baba , Masaaki Takahashi
IPC: G03G15/20
CPC classification number: G03G15/2064
Abstract: Provided is a pressurizing member including a substrate, an elastic layer on the substrate, and a surface layer on the elastic layer, the surface layer containing a fluorine resin, wherein the surface layer has a surface resistivity of 1×1011[Ω/□] or less at a temperature of 25° C. when applying a DC voltage of 500 V, and a thermal conductivity λ in a thickness direction of the surface layer is 0.093 [W/(m·K)] or less.
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公开(公告)号：US20200019100A1
公开(公告)日：2020-01-16
申请号：US16444216
申请日：2019-06-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Akeshi Asaka , Naoki Akiyama , Hiroto Sugimoto , Hiroki Muramatsu , Yasuhiro Miyahara , Noriaki Kobayashi
Abstract: A fixing apparatus includes an endless belt, and a pressing member including a base body and an elastic layer formed on the base body. A plurality of pore portions connected to each other are provided in the elastic layer. In a case where a binary image is generated from a three-dimensional image of the elastic layer, a threshold value X μm corresponding to opening processing with which a number of pores derived from the pore portions takes a maximum value is obtained, and then pores derived from the pore portions in the elastic layer are extracted by performing opening processing with a threshold value of 2X μm, an average value of angles θ is 120° or larger and smaller than 150°.
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公开(公告)号：US20180046117A1
公开(公告)日：2018-02-15
申请号：US15670179
申请日：2017-08-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroki Muramatsu , Toshinori Nakayama , Kota Arimoto , Masayuki Tamaki , Yusuke Yamaguchi , Ryo Yashiro , Matsutaka Maeda , Yuji Kitano , Yoshihito Oshima
CPC classification number: G03G15/2003 , G03G15/1615 , G03G15/162 , G03G15/2057 , G03G2215/2035
Abstract: Provided is an endless belt-shaped electrophotographic member having a superior durability. The member comprises an endless belt-shaped substrate and a surface layer, the surface layer comprising an ionizing radiation crosslinked product of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), the surface layer is formed by irradiation of electron beam to a resin layer, the resin layer comprising the PFA, the surface layer has a universal hardness HU at 200° C. of 18 N/mm2≦HU≦40 N/mm2, and when a degree of orientation of the PFA in the resin layer in a direction orthogonal to the circumferential direction of the substrate is defined as Ri, and a degree of orientation of the crosslinked PFA in the surface layer in the direction orthogonal to the circumferential direction of the substrate is defined as Rf, Ri and Rf satisfy a relationship represented by expression (1): Ri×0.8≦Rf≦Ri (1).
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公开(公告)号：US12059874B2
公开(公告)日：2024-08-13
申请号：US17554231
申请日：2021-12-17
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yohei Miyauchi , Yasuharu Notoya , Naoko Kasai , Yusuke Baba , Masaaki Takahashi , Hiroki Muramatsu , Ryo Ishifuji
CPC classification number: B32B27/304 , B32B1/08 , B32B27/285 , B32B33/00 , G03G15/2057 , B32B2260/02 , B32B2260/046 , B32B2433/00
Abstract: A fixing rotating member comprising a base layer, an elastic layer and a surface layer, in this order, the surface layer containing PFA and PFPE, and having pores with openings at a first surface; at least part of the pores containing the PFPE, wherein when after removing the PFPE in the pores, placing a first observation region on the first surface, defining a ratio of a sum of areas of the openings in the first observation region relative to an area of the first observation region as P1; and placing a second observation region in a cross section of the surface layer, and defining a ratio of a sum of areas of the pores in the second observation region relative to an area of the second observation region as P2, P2/P1 is 1.3 or higher.
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