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:
Jul. 10, 2001
Filed:
Aug. 12, 1999
Hiroyuki Miura, Minamiashigara, JP;
Hiroyuki Kataoka, Minamiashigara, JP;
Hiroshi Takayama, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A charging member has a conductive core, a conductive elastic layer formed on the surface of the conductive core, and a wearing surface layer to be used also as a resistance controlling layer formed on the surface of the conductive elastic layer, and comprising a surface layer-forming resin and a resistance controlling conductive filler, developing conductivity by electron conduction and having a specific wearing amount of 5.0×10,(mm,/N·km) or more, the charging member capable of preventing deterioration of the charging performance of a charging member caused by contamination of the surface layer of the charging member, and maintaining stable and satisfactory uniform charging property and image quality for a long period of time, and always keeping the surface clean by positively wearing the surface layer of the charging member.