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:
Jul. 28, 1992
Filed:
Jul. 26, 1990
Applicant:
Inventors:
Jeffrey J Folkins, Rochester, NY (US);
Samuel W Ing, Webster, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355264 ; 118652 ; 355215 ; 355261 ;
Abstract
An apparatus in which a developer unit of an electrophotographic printing machine has a plurality of wires which trap contaminants before reaching electrode wires positioned between a donor roller and a photoconductive surface. In addition, a circuit determines when defects and deletions are caused by contaminants spacing the electrode wires from the donor roller.