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:
Nov. 09, 1999
Filed:
Apr. 21, 1998
Yoshitomo Masuda, Hamura, JP;
Gaku Yakushiji, Kodaira, JP;
Yasushi Inoue, Fujisawa, JP;
Minoru Satoyoshi, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Disclosed is an electric charging member for charging a body to be charged by bringing the electric charging member in contact with the body to be charged and applying a voltage between the electric charging member and the body to be charged, including: an elastic layer; and a covering layer formed on the outer side of the elastic member directly or through another layer; wherein the covering layer is formed of a coating having a storage modulus (G') in a range of 1.times.10.sup.7 dyn/cm.sup.2 or less, and also having tan .delta., expressed by a ratio (G'/G') of a loss modulus (G') to the storage modulus (G'), in a range of 0.01 to 0.4. The electric charging member is allowed to suppress occurrence of compressive deformation and to reduce noise due to electrification.