Patent ID: 7326357
Filing Date: 2008-02-05
Classification: B41J,Y10T

Abstract:
1. A method of fabricating an inkjet printhead integrated circuit comprising the steps of: etching a circuitry layer to define first regions; depositing first thermally expandable material over the circuitry layer and the first regions; etching the first thermally expandable material and the circuitry layer to define second regions having via holes; forming heaters at the second regions electrically contacting the circuitry layer through the via holes; depositing second thermally expandable material on the heaters; forming a nozzle at each second region by etching the first and second thermally expandable material to define an arm suspended at one end from the circuitry layer and an inkjet port in the suspended end of the arm, each arm being formed to have one of the heaters embedded in the first and second thermally expandable material such that uneven expansion is caused upon heating resulting in displacement of the arm and associated inkjet port relative to the circuitry layer; and forming channels aligned with the nozzles by etching a substrate carrying the circuitry layer.