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:
Nov. 24, 2015
Filed:
Apr. 19, 2012
Applicant:
Kianoush Naeli, Corvallis, OR (US);
Inventor:
Kianoush Naeli, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/05 (2006.01); B41J 2/14 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14201 (2013.01); B41J 2/14233 (2013.01); B41J 2/175 (2013.01); B41J 2202/12 (2013.01);
Abstract
A printhead or other fluid handling device includes a firing chamber. Plural actuators are configured to cause fluid to be drawn into or ejected from the firing chamber. The actuators can also cause fluid to circulate within the firing chamber without appreciable fluid flow out of or into the firing chamber. Electronic signals independently control the respective actuators in accordance with various operating modes. Problems associated with fluid drying, separation of constituents within the fluid and other phenomenon are reduced or eliminated accordingly.