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. 10, 2014
Filed:
Jan. 18, 2012
Applicants:
Matthew Thomas Martinkovic, Lexington, KY (US);
Benjamin John Goebel, Woodbury, MN (US);
Inventors:
Matthew Thomas Martinkovic, Lexington, KY (US);
Benjamin John Goebel, Woodbury, MN (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image forming apparatus includes a charge roller with improved resistance to defects from prolonged periods of nonuse. The charge roller includes an outermost coating layer including a coating material and filler particles. The filler particles have an average particle size larger than an average thickness of the outermost coating layer in a portion without the filler particles. Furthermore, the filler particles are harder and have a higher glass transition temperature than the coating material.