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. 27, 2014
Filed:
Dec. 29, 2010
Deane A. Gardner, Cupertino, CA (US);
Andreas Bibl, Los Altos, CA (US);
Deane A. Gardner, Cupertino, CA (US);
Andreas Bibl, Los Altos, CA (US);
FUJIFILM Corporation, Tokyo, JP;
Abstract
Fluid ejection apparatuses and processes for making the same are disclosed. An apparatus for ejecting fluid droplets includes a substrate having a plurality of flow paths formed therein, each flow path including a respective pumping chamber and a respective nozzle, and the respective nozzle being configured to eject fluid droplets through a first surface of the substrate in response to actuation of the respective pumping chamber; and an actuation assembly including a drive electrode layer over a second surface of the substrate opposite to the first surface, a piezoelectric layer over the drive electrode layer, and a reference electrode layer over the piezoelectric layer, the drive electrode layer being patterned to define an individually controllable drive electrode over each of two or more pumping chambers in the substrate, and the reference electrode layer including a continuous reference electrode spanning the two or more pumping chambers in the substrate.