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:
Jul. 23, 2024
Filed:
Apr. 14, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Shuhei Iwasaki, Kanagawa, JP;
Tomohito Ishida, Shizuoka, JP;
Nobuhiro Nakamura, Shizuoka, JP;
Hiroyuki Watanabe, Shizuoka, JP;
Tatsuya Yamaai, Kanagawa, JP;
Yuka Ishiduka, Shizuoka, JP;
Yota Ito, Tokyo, JP;
Takeshi Murakami, Kanagawa, JP;
CANON KABU SHIKI KAISHA, Tokyo, JP;
Abstract
There is provided an electrophotographic photosensitive member having drum shape, the electrophotographic photosensitive member including a support and a photosensitive layer, wherein an outer surface of the electrophotographic photosensitive member has wrinkles, and when an observation region having square form with one side of 100 μm is placed at an arbitrary position on the outer surface, a line that passes through a central point of the observation region and is parallel to a circumferential direction of the electrophotographic photosensitive member is defined as a first reference line L1, and 3,599 reference lines obtained by rotating the first reference line L1 at every 0.1° around the central point are defined as L2 to L3,600, respectively, each of L1 to L3,600 intersects with convex portions of the wrinkles at a plurality of locations and has at least two different intersection angles selected from the plurality of locations.