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:
May. 19, 2015
Filed:
Oct. 14, 2011
Applicants:
James M. Gardner, Corvallis, OR (US);
Peter J. Fricke, Corvallis, OR (US);
Mark A. Hunter, Portland, OR (US);
Inventors:
James M. Gardner, Corvallis, OR (US);
Peter J. Fricke, Corvallis, OR (US);
Mark A. Hunter, Portland, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/15 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
B41J 2/0455 (2013.01); B41J 2/04541 (2013.01); B41J 2/04548 (2013.01); B41J 2/0458 (2013.01); B41J 2/04581 (2013.01);
Abstract
A method and apparatus supply electrical current to a firing actuator of a printhead die across a high side switching transistor in a source follower arrangement and supply a regulated voltage, that is no greater than a concurrent voltage at a drain of the HSS transistor, to a gate of the high side switching transistor.