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:
Jan. 30, 2001
Filed:
Nov. 01, 1999
Applicant:
Inventors:
Masao Isoda, Tokyo, JP;
Hirokazu Ando, Tokyo, JP;
Takao Mizutani, Tokyo, JP;
Masayuki Suzuki, Tokyo, JP;
Assignee:
Oki Data Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25F 5/02 ;
U.S. Cl.
CPC ...
B25F 5/02 ;
Abstract
A semiconductive roller has an electrically conductive shaft, a roller provided on the shaft formed of silicone rubber with carbon contained therein. The silicone rubber is also added olefin oil and zinc oxide. A method is used for manufacturing a semiconductive roller formed of an electrically conductive shaft. The method includes carrying out a first vulcanization where the semiconductive roller is shaped into a roller and carrying out a second vulcanization where the semiconductive roller is heated at 200° C. for substantially four hours.