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. 31, 1999
Filed:
Jun. 19, 1998
Yoichi Nakamura, Nagano, JP;
Kazumi Egota, Nagano, JP;
Seizo Kitagawa, Nagano, JP;
Naoki Itoh, Nagano, JP;
Fuji Electric Co., Ltd, , JP;
Abstract
An electrophotographic photoconductor includes a conductive substrate having a photoconductive film thereon. The photoconductive film includes a layer containing a charge transport agent and a phosphonite compound, which acts as an antioxidant. Preferably, the phosphonite compound is diarylarylphosphonite. The layer that contains the charge transport preferably contains from 0.005 to 10 weight % of diarylarylphosphonite. The diarylarylphosphonite is preferably a compound selected from the group consisting of bis(2,4-di-tert-butylphenyl)phenylphosphonite, bis(2,6-di-tert-butylphenyl)phenylphosphonite and bis(2,6-di-tert-butyl-4-methylphenyl)phenylphosphonite.