The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2024
Filed:
Dec. 17, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yohei Miyauchi, Tokyo, JP;
Yasuharu Notoya, Tokyo, JP;
Naoko Kasai, Kanagawa, JP;
Yusuke Baba, Kanagawa, JP;
Masaaki Takahashi, Kanagawa, JP;
Hiroki Muramatsu, Tokyo, JP;
Ryo Ishifuji, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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 P; 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 P, P/Pis 1.3 or higher.