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:
Aug. 04, 2020
Filed:
Nov. 04, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Wataru Moriai, Suntou-gun, JP;
Minoru Nakamura, Mishima, JP;
Toru Ishii, Mishima, JP;
Kazutoshi Ishida, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The developing member has an electroconductive substrate, and an elastic layer having a mono-layer structure on the substrate as a surface layer, wherein the elastic layer has a thickness of T μm and a volume resistivity of 1.0×10Ω·cm to 1.0×10Ω·cm, and includes a first resin as a main binder; and the elastic layer further includes a second resin having a structural unit represented by Formula (1), in a region extending toward a first surface from a second surface by a depth of t μm, where the first surface is defined as a surface of the elastic layer on a side facing the substrate, and the second surface is defined as a surface thereof opposite to the first surface, wherein in the region, a concentration of ether bonds is higher on the second surface side than on the first surface side (provided that T>t):