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:
Jun. 02, 2015
Filed:
Apr. 03, 2013
Applicant:
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Inventors:
Norine Chang, Menlo Park, CA (US);
David Matthew Johnson, San Francisco, CA (US);
Scott J. Limb, Palo Alto, CA (US);
John S. Paschkewitz, San Carlos, CA (US);
Eric J. Shrader, Belmont, CA (US);
Assignee:
PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/135 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14 (2013.01); Y10T 29/49401 (2015.01); B41J 2/1621 (2013.01); B41J 2/14209 (2013.01); B41J 2002/14225 (2013.01); B41J 2202/07 (2013.01);
Abstract
An inkjet printhead includes an oleophobic membrane arranged at a location that allows the oleophobic membrane to simultaneously vent air from an ink flow channel of the printhead and to retain ink within the ink flow channel. The oleophobic membrane includes a metal structure having a nanostructured surface and low-surface energy coating disposed on the metal structure.