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.

公开(公告)号：US10534297B2

公开(公告)日：2020-01-14

申请号：US16426498

申请日：2019-05-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jun Miura ,  Yutaka Arai ,  Takeshi Suzuki ,  Akeshi Asaka ,  Shigeaki Takada ,  Masaaki Takahashi ,  Yo Imaizumi

IPC: G03G15/20 ,  B05D1/30

Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.

公开(公告)号：US12019381B2

公开(公告)日：2024-06-25

申请号：US18059921

申请日：2022-11-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yusuke Baba ,  Masaaki Takahashi ,  Masahiro Takenaga ,  Takeshi Suzuki ,  Masayuki Onuma ,  Kaoru Okamoto

IPC: G03G15/16

CPC classification number: G03G15/1605 ,  G03G15/162

Abstract: An electrophotographic member includes a base layer, an elastic layer, and a surface layer stacked in this order. The surface layer contains a fluorine resin and a fluorine rubber, the fluorine rubber is contained at a proportion of 0.5 parts by mass or more and 1.0 parts by mass or less with respect to 1 part by mass of the fluorine resin, and the surface layer further contains a compound represented by formula (1):

CH3(CH2)m—O—((CH2)lO)n—OH  (1)

In formula (1), m, l, and n each independently represent an integer of 1 or more.

公开(公告)号：US11561495B2

公开(公告)日：2023-01-24

申请号：US17554211

申请日：2021-12-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Naoko Kasai ,  Yohei Miyauchi ,  Yasuharu Notoya ,  Takuji Oishi ,  Yasuhiro Miyahara ,  Masaaki Takahashi ,  Yusuke Baba ,  Hiroki Muramatsu ,  Ryo Ishifuji

IPC: G03G15/20

Abstract: A pressing rotating member comprising a base layer, an elastic layer and a surface layer, in this order, the surface layer having pores, wherein when placing an observation region of 8 μm long×11 μm wide at a cross section of the surface layer in a thickness direction of the surface layer—a direction perpendicular to a circumferential direction of the pressing rotating member, a degree of orientation f of the pores observed in the observation region is 0.20 or higher, and an orientation angle Φ of the pores observed in the observation region is 0° to 10°.

公开(公告)号：US20220390885A1

公开(公告)日：2022-12-08

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

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.

公开(公告)号：US20220206419A1

公开(公告)日：2022-06-30

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

IPC: G03G15/20

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%.

公开(公告)号：US10353330B2

公开(公告)日：2019-07-16

申请号：US15926028

申请日：2018-03-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jun Miura ,  Yutaka Arai ,  Takeshi Suzuki ,  Akeshi Asaka ,  Shigeaki Takada ,  Masaaki Takahashi ,  Yo Imaizumi

IPC: G03G15/20 ,  B05D1/30

Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.

公开(公告)号：US09063491B2

公开(公告)日：2015-06-23

申请号：US14283866

申请日：2014-05-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Katsuhisa Matsunaka ,  Kazuo Kishino ,  Masaaki Takahashi ,  Katsuya Abe

IPC: G03G15/20

CPC classification number: G03G15/2057 ,  G03G2215/2035

Abstract: The present invention is directed to providing a fixing member that has a flexible surface and that can supply a larger amount of heat to a material to be recorded and a toner in a shorter period of time. The fixing member comprises a substrate, an elastic layer and a releasing layer, wherein thermal effusivity in a depth region from a surface of the releasing layer is 1.5 [kJ/(m2·K·sec0.5)] or more, the depth region corresponding to a thermal diffusion length when an alternating-current temperature wave having a frequency of 10 Hz is applied to the surface of the releasing layer, and a surface micro rubber hardness is 85 degrees or less.

Abstract translation: 本发明旨在提供一种具有柔性表面并且可以在更短时间内向要记录的材料和调色剂提供更大量的热量的固定构件。 固定构件包括基板，弹性层和释放层，其中从剥离层的表面的深度区域的热效率为1.5 [kJ /（m2·K·sec·0.5）]以上，深度区域 对于脱离层的表面施加具有10Hz的频率的交流温度波，表面微橡胶硬度为85度以下时的热扩散长度。

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

IPC: B32B27/28 ,  B32B1/08 ,  B32B27/30 ,  B32B33/00 ,  G03G15/20

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%.

公开(公告)号：US20190105888A1

公开(公告)日：2019-04-11

申请号：US16213767

申请日：2018-12-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takeshi Suzuki ,  Yutaka Arai ,  Masaaki Takahashi ,  Shigeaki Takada ,  Akeshi Asaka ,  Yukio Sasame ,  Masayuki Onuma

IPC: B32B37/12 ,  B29D99/00 ,  G03G15/20

Abstract: One end portion of a resin tube kept in a diameter expanded state by a plurality of diameter expanding claws is disengaged from the diameter expanding claws and is shifted onto an outer peripheral surface of a die by applying a pressing force toward the other end portion of the resin tube to an end surface of the one end portion of the resin tube.