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. 01, 1999
Filed:
Apr. 29, 1998
Applicant:
Inventor:
Naoyuki Matsui, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 58 ; 430 65 ; 430131 ;
Abstract
In the manufacture of a photoconductor for electrophotography, an aluminum substrate is heated at a temperature of 430.degree. C. to 550.degree. C. for three or more hours in such a manner that the admittance of an anodic oxidation film to be formed over the aluminum substrate is within a range of 0.4 to 30 S/m2 and the anodic oxidation film has a contact angle by pure water is restricted within a range of 30.degree. to 80.degree., thus improving the heat resistance of the aluminum substrate. The resulting photoconductor for electrophotography has an adequate degree of heat resistance and can give a good image characteristic even in a high-temperature and high-humidity environment.