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:
Mar. 11, 2025
Filed:
Mar. 04, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Nobuhiro Nakamura, Shizuoka, JP;
Tomohito Ishida, Shizuoka, JP;
Shuhei Iwasaki, Kanagawa, JP;
Hiroyuki Watanabe, Shizuoka, JP;
Fumiyuki Hiyama, Shizuoka, JP;
Shuntaro Watanabe, Kanagawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In an electrophotographic photosensitive member, wrinkles have a convex portion in which a linear shape portion having a length of 50 μm or longer exists, the linear shape portion is parallel to any one of L1 to L150 and L1651 to L1800, and each of L1 to L1800 intersects with the convex portion at a plurality of places, and at least two of the places have different intersection angles; and when height information of the wrinkles is subjected to a frequency analysis, and a two-dimensional power spectrum is obtained, a one-dimensional radial distribution function has at least one local maximum value, and when an angular distribution is calculated from the spectrum at a frequency of the local maximum value, the power values have a particular relationship.