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. 01, 2015
Filed:
Dec. 15, 2014
Kyocera Document Solutions Inc., Osaka-shi, Osaka, JP;
Yoshinobu Yoneima, Osaka, JP;
Yuji Kamiyama, Osaka, JP;
Akihiro Watanabe, Osaka, JP;
Tamotsu Shimizu, Osaka, JP;
Shizuka Okada, Osaka, JP;
Sakae Saito, Osaka, JP;
Yasuhiro Oishi, Osaka, JP;
Chikara Ishihara, Osaka, JP;
Masashi Fujishima, Osaka, JP;
Yoshimi Shimizu, Osaka, JP;
Yasuhiro Tauchi, Osaka, JP;
Yu Sasaki, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka-shi, JP;
Abstract
A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. A resin coat layer has been formed on an outer circumferential surface of the roller main body, the resin coat layer being made of a resin material having electric conductivity. A product of resistance component Rs [Ω] and electrostatic capacitance component Cs [F] in AC impedance Z of the roller main body is in a range from 2.79×10to 6.77×10, the AC impedance Z being obtained when an AC voltage of a predetermined frequency f is applied.