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:
Dec. 30, 2025
Filed:
Apr. 25, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Koji Takahashi, Chiba, JP;
Yasuo Kojima, Chiba, JP;
Motoya Yamada, Chiba, JP;
Masayuki Shinozuka, Chiba, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an electrophotographic photosensitive member including: a support; and a photosensitive layer, wherein the support has a surface formed of Al and/or an Al alloy, wherein the surface of the support comprises Al crystal grains having: (α) a plane at −15° or more and less than +15° with respect to a {001} orientation; (β) a plane at −15° or more and less than +15° with respect to a {101} orientation; and (γ) a plane at −15° or more and less than +15° with respect to a {111} orientation, and wherein the ratio of an area occupied by the Al crystal grain having the (γ) is 10% or less, and the value of the ratio of an area occupied by the Al crystal grain having the (α) to an area occupied by the Al crystal grain having the (β) is more than 4/6 and less than 6/4.