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:
May. 05, 2020
Filed:
Feb. 20, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Yuji Sakurai, Susono, JP;
Minoru Nakamura, Mishima, JP;
Ryo Sugiyama, Mishima, JP;
Kazutoshi Ishida, Mishima, JP;
Hiroshi Morishita, Tsukuba, JP;
Kenta Matsunaga, Susono, JP;
Kentarou Nakamura, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The developing member includes a substrate, and an electroconductive layer on the substrate, wherein the electroconductive layer has electrically insulating domains on an outer surface thereof, the domains being independent from each other, the developing member has an outer surface including a surface of the electroconductive layer and surfaces of the domains, and wherein, when each of the domains is orthographically projected onto the surface of the electroconductive layer, defining respective areas of projected images of the domains as S, and defining respective areas of convex envelopes of the projected images as H, at least one domain satisfies the relation represented by 0.05≤S/H≤0.80.