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. 25, 2015
Filed:
Mar. 31, 2014
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventor:
William H. Wayman, Ontario, NY (US);
Assignee:
Xerox Corporation, Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/393 (2006.01); B41J 2/32 (2006.01); B33Y 30/00 (2015.01); B41J 11/00 (2006.01);
U.S. Cl.
CPC ...
B41J 29/393 (2013.01); B41J 2/32 (2013.01); B33Y 30/00 (2014.12); B41J 11/0095 (2013.01);
Abstract
An apparatus detects inoperative inkjets during printing operations. The apparatus includes a supply of thermal substrate that is exposed to heat to darken the substrate. The thermal substrate is printed with materials ejected from a printhead to form a test pattern. The contrast between the ejected materials and the exposed thermal substrate are imaged by an optical sensor to generate image data that are analyzed to identify inoperative inkjets.