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. 06, 2000
Filed:
Oct. 29, 1996
Applicant:
Inventors:
William Hargis Barton, Nicholasville, KY (US);
Alan Stirling Campbell, Lexington, KY (US);
Martin Victor DiGirolamo, Lexington, KY (US);
Donald Wayne Stafford, Richmond, KY (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399176 ; 361221 ; 361225 ; 361230 ; 399 50 ; 399117 ; 399313 ; 399 31 ; 428 341 ; 428375 ; 428379 ; 428383 ; 428 369 ;
Abstract
A charge roller has a steel shaft and conductive outer cylindrical body which is formed by curing with heat a blend comprised of epichlorohydrin rubber, mineral-oil-free zinc oxide dispersion, stearic acid as a lubricant, accelerators and a sulfur donor. The roller has a long useful life and does not express oil while inactive.