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:
Sep. 07, 2021
Filed:
Oct. 14, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Masaki Yamada, Numazu, JP;
Yuichi Kikuchi, Suntou-gun, JP;
Tetsuo Hino, Yamato, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Takumi Furukawa, Susono, JP;
Hiroaki Watanabe, Odawara, JP;
Kenya Terada, Suntou-gun, JP;
Yuya Tomomizu, Ichikawa, JP;
Toshimitsu Nakazawa, Toride, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An electrophotographic developing member includes an electro-conductive support and an electro-conductive layer provided on the support, wherein the electro-conductive layer has a matrix containing a first rubber and a plurality of domains dispersed in the matrix, and the domain contains a second rubber and an electronic conductive agent and when a frequency is log-log-plotted on a horizontal axis and an impedance is log-log-plotted on a vertical axis with respect to an impedance measured by applying an alternating current voltage having an amplitude of 1 V on the electro-conductive layer while changing a frequency between 1.0×10Hz to 1.0×10Hz under a specific environment, an inclination of an impedance on a high frequency side is −0.8 or more and −0.3 or less and an impedance on a low frequency side is 1.0×10Ω to 1.0×10Ω.