US 12,070,925 B2
Fixing rotating member, fixing apparatus and electrophotographic image forming apparatus, and method for producing fixing rotating member
Hiroki Muramatsu, Tokyo (JP); Ryo Ishifuji, Ibaraki (JP); Yohei Miyauchi, Tokyo (JP); Yasuharu Notoya, Tokyo (JP); Yusuke Baba, Kanagawa (JP); Masaaki Takahashi, Kanagawa (JP); and Naoko Kasai, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 17, 2021, as Appl. No. 17/554,192.
Claims priority of application No. 2020-217922 (JP), filed on Dec. 25, 2020; and application No. 2021-186416 (JP), filed on Nov. 16, 2021.
Prior Publication US 2022/0206419 A1, Jun. 30, 2022
Int. Cl. B32B 27/28 (2006.01); B32B 1/08 (2006.01); B32B 27/30 (2006.01); B32B 33/00 (2006.01); G03G 15/20 (2006.01)
CPC B32B 27/285 (2013.01) [B32B 1/08 (2013.01); B32B 27/304 (2013.01); B32B 33/00 (2013.01); G03G 15/2057 (2013.01); B32B 2260/02 (2013.01); B32B 2260/046 (2013.01); B32B 2307/514 (2013.01); B32B 2433/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fixing rotating member comprising 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 surface layer having pores with openings at a first surface thereof, and constituting an outer surface of the fixing rotating member, and
at least part of the pores containing the perfluoropolyether,
wherein a content of the perfluoropolyether in the surface layer is 20 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%.