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:
Oct. 04, 2016
Filed:
Sep. 24, 2014
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventors:
Steven E. Ready, Los Altos, CA (US);
Terrance L. Stephens, Canby, OR (US);
David L. Knierim, Wilsonville, OR (US);
David Alan Tence, Tualatin, OR (US);
Assignees:
XEROX CORPORATION, Norwalk, CT (US);
PALO ALTO RESEARCH CENTER INCORPORATION, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/04506 (2013.01); B41J 2/0451 (2013.01); B41J 2/04581 (2013.01); B41J 2002/14354 (2013.01);
Abstract
Systems and methods for sensing degradation of a piezoelectric actuator in a print head. One or more electrical pulses may be transmitted to the piezoelectric actuator that cause the piezoelectric actuator to bend, thereby creating a pressure wave. The pressure wave may be sensed and converted into an electrical signal. The electrical signal may be compared to a reference signal.