Patent ID: 6701593
Filing Date: 2004-03-09
Classification: B41J,Y10T

Abstract:
A process for producing a piezoelectric inkjet printhead, comprising:forming a plurality of lower electrodes on a substrate; forming a piezoelectric layer on the substrate and the lower electrodes; forming a plurality of upper electrodes on the piezoelectric layer; forming a first photosensitive polymer layer on the upper electrodes and the piezoelectric layer; removing a portion of the first photosensitive polymer layer to form a plurality of chamber walls that define a plurality of ink chambers, wherein each of the ink chambers has at least a lower electrode and an upper electrode; forming a second photosensitive polymer layer on top of the chamber walls; and removing a portion of the second photosensitive layer to form a top film having a plurality of ink inlets and a plurality of ink outlets, wherein each of the ink chambers has an ink inlet and an ink outlet.