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. 24, 2003
Filed:
Apr. 03, 2002
Antonio S. Cruz-Uribe, Corvallis, OR (US);
Naoto A. Kawamura, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid ejection device includes a substrate, a stack of thin film layers and a further substrate. The substrate has a first surface and a second surface, and defines a fluid supply conduit. The stack of thin film layers has a first surface and a second surface, with the first surface of the stack of thin film layers being affixed to the second surface of the substrate. In one embodiment, the stack of thin film layers includes at least one ink energizing element, and defines a plurality of fluid filter openings that are in fluid communication with the fluid supply conduit of the substrate. The fluid filter openings function as a fluid. The further substrate has a first surface coupled to the second surface of the stack of thin film layers, and an exterior second surface. The further substrate defines at least one firing chamber positioned over the at least one fluid energizing element of the stack of thin film layers, with the firing chamber opening through a nozzle aperture in the exterior surface of the further substrate.