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:
Jun. 08, 2010
Filed:
Jan. 05, 2007
Tadayuki Oshima, Atsugi, JP;
Hiroki Furubayashi, Atsugi, JP;
Taisuke Tokuwaki, Sagamihara, JP;
Tadaaki Hattori, Hadano, JP;
Toshio Kojima, Isehara, JP;
Makoto Nakamura, Ebina, JP;
Yutaka Narita, Sagamihara, JP;
Tadayuki Oshima, Atsugi, JP;
Hiroki Furubayashi, Atsugi, JP;
Taisuke Tokuwaki, Sagamihara, JP;
Tadaaki Hattori, Hadano, JP;
Toshio Kojima, Isehara, JP;
Makoto Nakamura, Ebina, JP;
Yutaka Narita, Sagamihara, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention provides a conductive memberwith a superior durability by controlling an electric resistance value of an electric resistance adjusting layerwithin a semi conductive range, preventing an ion conductive material from bleeding out of the electric resistance adjusting layerto avoid improper charging and avoiding strength decreasing of a weld portion of the electric resistance adjusting layer and an electric resistance value fluctuation. The electric resistance adjusting layeris made from a resin composition prepared by melting and kneading a thermoplastic resin, a high molecular ion conductive material containing an alkali metal salt and a graft copolymer which has an affinity for both the thermoplastic resin and the high molecular ion conductive material.