Patent ID: 8925835
Filing Date: 2015-01-06
Classification: B41J,Y10T

Abstract:
1. A device, comprising: a substrate; a first dielectric layer on the substrate; a chamber having a first surface and a second surface defined by the first dielectric layer, the second surface being opposite to the first surface; a first heater element positioned in the first dielectric layer and configured to heat the chamber from the second surface; a metal layer overlying the first dielectric layer, the metal layer having a first thickness, the metal layer being closer to the first surface of the chamber than to the second surface of the chamber; a nozzle through the metal layer exposing the chamber; a protection layer overlying the metal layer and on walls of the nozzle, the protection layer having a second thickness at least two times smaller than the first thickness; and an inlet path in the substrate, through the first dielectric layer, the inlet path in fluid communication with the chamber, the nozzle, and a surrounding environment.