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:
Oct. 11, 2022
Filed:
Jul. 30, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Sosuke Yamaguchi, Chiba, JP;
Shohei Urushihara, Mishima, JP;
Kazuaki Nagaoka, Susono, JP;
Ryo Sugiyama, Mishima, JP;
Minoru Nakamura, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided an electrophotographic member capable of causing less fog in an H/H environment even when used in a torque-reduced image forming apparatus. The member comprises an electro-conductive substrate, an electro-conductive layer thereon and insulating parts, the member having a surface having an electrical insulating first region and an electro-conductive second region, the first region and the second region being adjacent to each other, a total area of the second region in a square region put on an outer surface of the member is 30% to 80% of an area of the square region; two or more of the 200 straight lines drawn in the square region at an interval of 5 μm pass the second region at least once, and, the number of line segment LS having a length of 200 μm or more is 5% or less of the total number of the line segment LS.