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. 17, 1993
Filed:
Sep. 05, 1991
Applicant:
Inventors:
Robin E Berman, Rochester, NY (US);
Mark A Scheuer, Williamson, NY (US);
Daniel W MacDonald, Farmington, NY (US);
Carl B Hurwitch, Rochester, NY (US);
David G Wilcox, Macedon, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03G / ;
U.S. Cl.
CPC ...
430 30 ; 430 42 ; 430 54 ; 430 31 ; 355246 ;
Abstract
Infra-Red Densitometer (IRD) readings are utilized to check the efficiency of two-pass cleaning of the black toner patch in a tri-level imaging apparatus. The IRD examines the background patch of the tri-level image and declares a machine fault if excessive toner is detected.