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：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：US20220206421A1

公开(公告)日：2022-06-30

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

IPC: G03G15/20

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.

公开(公告)号：US20220206420A1

公开(公告)日：2022-06-30

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：US20240160137A1

公开(公告)日：2024-05-16

申请号：US18543983

申请日：2023-12-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yohei Miyauchi ,  Masatsugu Toyonori ,  Naoko Kasai ,  Yasuharu Notoya ,  Hiroki Muramatsu ,  Tomoyo Miyakai

IPC: G03G15/20

CPC classification number: G03G15/2057

Abstract: A fixing member having a base layer and a surface layer, wherein the surface layer includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and having at least one pore communicating with an opening on an outer surface thereof. A composition containing perfluoropolyether and a fluoropolymer is contained in at least a part of the at least one pore. The fluoropolymer has a particular repeating unit composed of perfluoropolyether, and at least one structure selected from the group consisting of a T unit of siloxane and a Q unit of siloxane.

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：US20220187741A1

公开(公告)日：2022-06-16

申请号：US17544754

申请日：2021-12-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Midai Suzuki ,  Akeshi Asaka ,  Koji Sato ,  Noriaki Kobayashi ,  Megumi Uchino ,  Akira Okano ,  Toshiyuki Yoshida ,  Naoko Kasai ,  Atsushi Hori

IPC: G03G15/16

Abstract: The crystallinity of a thermoplastic resin is 8% or more and 25% or less, the average primary particle size of carbon black is 10 nm or more and 30 nm or less, the content of the carbon black is 15.0 parts by mass or more and 30.0 parts by mass or less with respect to 100 parts by mass of an intermediate transfer belt, and (Li+Lo+Lc)/3≤100 nm, where Li, Lo, and Lc are values of an L-function indicating a dispersibility of the carbon black with respect to the thermoplastic resin in an inner peripheral surface region of the intermediate transfer belt, in an outer peripheral surface region, and in a central region that is a central portion of the intermediate transfer belt in a thickness direction of the intermediate transfer belt, respectively.

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

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

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.