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. 05, 2015
Filed:
Jul. 20, 2010
Applicants:
Jun Zeng, Sunnyvale, CA (US);
Michael H. Lee, San Jose, CA (US);
Henryk Birecki, Palo Alto, CA (US);
Inventors:
Jun Zeng, Sunnyvale, CA (US);
Michael H. Lee, San Jose, CA (US);
Henryk Birecki, Palo Alto, CA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/02 (2006.01); B41J 2/07 (2006.01); B41J 2/03 (2006.01);
U.S. Cl.
CPC ...
B41J 2/03 (2013.01); B41J 2/02 (2013.01); B41J 2002/022 (2013.01);
Abstract
Ink jet printers, ink stream modulators, and methods to generate droplets from an ink stream are disclosed. An example method to generate droplets from an ink stream includes generating a stream of ink with an inkjet nozzle and modulating the stream of ink into a plurality of droplets by generating an alternating electrical field having a frequency based on a permittivity of the ink to cause a dielectrophoretic effect.