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:
Jun. 06, 2023
Filed:
Sep. 01, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Keiji Karube, Ibaraki, JP;
Keisuke Abe, Kanagawa, JP;
Masahiro Takenaga, Kanagawa, JP;
Kenji Onuma, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic belt including at least a base layer and a surface layer on or above the base layer, the surface layer including a binder resin and perfluoropolyether (PFPE), having a thickness of 2 μm or more. PFPE is removed to obtain a PFPE-removed surface layer, the PFPE-removed surface layer has pores having openings at an outer surface thereof. When assuming that the PFPE-removed surface layer is a solid-surface layer, a ratio of a total volume of the pores contained in the PFPE-removed surface layer to a volume of the solid-surface layer is 8 to 25%. A ratio of a sum of areas of the openings to a unit area (1 μm) of the outer surface of the PFPE-removed surface layer is 10 to 35%, and the number of the openings per unit area (1 μm) of the outer surface of the PFPE-removed surface layer is 10 to 500.