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. 19, 2022
Filed:
Apr. 13, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Tomohito Ishida, Shizuoka, JP;
Nobuhiro Nakamura, Shizuoka, JP;
Shuhei Iwasaki, Kanagawa, JP;
Hiroyuki Watanabe, Shizuoka, JP;
Tatsuya Yamaai, Kanagawa, JP;
Yuka Ishiduka, Shizuoka, JP;
Yota Ito, Tokyo, JP;
Takeshi Murakami, Kanagawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an electrophotographic photosensitive drum that achieves both of a reduction in torque of the electrophotographic photosensitive drum at the time of its cleaning and an improvement in image transferability. The electrophotographic photosensitive drum includes: a support; and a photosensitive layer arranged on the support, the electrophotographic photosensitive drum having arranged on an outer surface thereof at least two structure groups having different appearance periods, wherein when, out of the two structure groups, a group including structures having a smaller appearance period is defined as a first structure group, and a group including structures having a larger appearance period is defined as a second structure group, a height of the first structure group is lower than a height of the second structure group.