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. 24, 1999
Filed:
Apr. 21, 1998
Applicant:
Inventors:
Robert Arnold Christiansen, Salvisa, KY (US);
Martin Victor Digirolamo, Lexington, KY (US);
Michelle Kathryn Morris, Lexington, KY (US);
Mark Meredith Trayner, Harrodsburg, KY (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4273881 ; 4273885 ; 427421 ;
Abstract
An extended wear developer sleeve coating formulation that provides optimum print quality for a toner cartridge that prints 30,000 pages. The coating formulation contains an unique coupling agent which acts to chemically bond the graphite material and the phenolic resin components of the formulation together, even at high graphite loads, to increase the cohesive strength of the coating and improve its wear resistance.