Invention Grant
- Patent Title: Fixing member, method for producing the same, fixing apparatus, and electrophotographic image forming apparatus
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Application No.: US17937710Application Date: 2022-10-03
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Publication No.: US12001158B2Publication Date: 2024-06-04
- Inventor: Naoko Kasai , Yohei Miyauchi , Masatsugu Toyonori , Yasuharu Notoya , Hiroki Muramatsu , Tomoyo Miyakai , Yoshiharu Seki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: CANON U.S.A., INC. IP Division
- Priority: JP 21163709 2021.10.04 JP 22102216 2022.06.24
- Main IPC: G03G15/20
- IPC: G03G15/20 ; B32B1/08 ; B32B27/30 ; B32B33/00 ; B32B37/04

Abstract:
A fixing member having an endless belt shape or a roller shape includes a base layer and a surface layer. The surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and has a pore communicating with an opening of an outer surface thereof. Perfluoropolyether is contained in at least a part of the pores. A ratio (E″(1)/E″(2)) is 0.60 to 1.00, where E″(1) is an average value of loss elastic moduli E″ of the surface layer in a direction orthogonal to a circumferential direction of the fixing member measured at a frequency of 10 Hz at 100 to 150° C., and E″(2) is an average value of loss elastic moduli E″ of the surface layer in a direction orthogonal to the circumferential direction of the fixing member measured at a frequency of 10 Hz at 100 to 150° C. after removal of the perfluoropolyether contained in the pore.
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