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:
Nov. 17, 2020
Filed:
Oct. 16, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Tatsuya Ikezue, Toride, JP;
Kumiko Takizawa, Saitama, JP;
Ikuyo Kuroiwa, Tokyo, JP;
Kan Tanabe, Matsudo, JP;
Tsuyoshi Shimada, Kashiwa, JP;
Haruhiko Mitsuda, Nagareyama, JP;
Takanori Ueno, Nagareyama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The electrophotographic photosensitive member includes an undercoat layer and a surface layer on or above a support in this order, in which the undercoat layer contains metal oxide particles and a specific binder resin, the surface layer contains a charge transporting substance, fluororesin particles, and a specific binder resin, an arithmetic average roughness Ra of a surface of the undercoat layer is 0.15 μm or less, a refractive index (a) of the metal oxide particles and a refractive index (b) of the binder resin contained in the undercoat layer satisfy a specific relationship, and a refractive index (c) of the binder resin contained in the surface layer and a refractive index (d) of the fluororesin particles satisfy a specific relationship.