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. 02, 2016
Filed:
Oct. 13, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Shuhei Tokiwa, Tokyo, JP;
Kazunari Hagiwara, Yokohama, JP;
Tatsuaki Orihara, Tokyo, JP;
Makoto Fukatsu, Suntou-gun, JP;
Atsushi Nakamoto, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a developer carrying member which depends on a sheet-passing speed to a small extent while maintaining satisfactory developability, and can stably suppress a fogging amount with time. The developer carrying member includes: an electro-conductive mandrel; and an electro-conductive elastic layer, in which: the elastic layer contains a resin j, an electro-semiconductive particle p, and an electro-conductive particle c; and when an electroconductivity of the resin j is defined as σ, a dielectric constant of the resin j is defined as ∈, an electroconductivity of the electro-semiconductive particle p is defined as σand a dielectric constant of the electro-semiconductive particle p is defined as ∈, σ, ∈, σ, and ∈satisfy relationships represented by the following formulae (1) and (2), σ, ∈, σand ∈being calculated by an AC impedance method.σ<σ<0.05 S/cm  (1)∈<∈  (2)