Patent ID: 6481831
Filing Date: 2002-11-19
Classification: B41J

Abstract:
A fluid ejection apparatus comprising:an insulative dielectric; first and second conductors fabricated on the insulative dielectric, the first and second conductors having a chamber formed therebetween, the first and second conductors each having a width; a dielectric material fabricated on the first and second conductors and on the insulative dielectric in the chamber; a first via formed in the dielectric material to expose a portion of the first conductor, the first via having sloped side walls; a second via formed in the dielectric material to expose a portion of the second conductor, the second via having sloped side walls; a resistive material layer formed within the first and second vias and on the dielectric material between the first and second vias, the resistive material layer having a length at least as long as a distance between the first and second vias in the dielectric material; a passivation material layer formed onto the dielectric material and onto the resistive material layer; and a cavitation material layer formed onto the dielectric material and onto the passivation layer.