Substantially planar ejection actuators and methods relating thereto
AssigneeLexmark International, Inc.
InventorsRobert Wilson Cornell, Yimin Guan, Burton Lee Joyner, II
Life of this patent
Estimating the term…
Abstract
A substantially planar fluid ejection actuator and methods for manufacturing substantially planar fluid ejection actuators for micro-fluid ejection heads. One such fluid ejection actuator includes a conductive layer adjacent to a substrate that is configured to define an anode segment spaced apart from a cathode segment. A thermal barrier segment is disposed between the anode and cathode segments. A substantially planar surface is defined by the anode segment, and the thermal barrier segment. A resistive layer is applied adjacent to the substantially planar surface.
Claims15
A micro-fluid ejection head for a micro-fluid ejection device, the head comprising a fluid ejection actuator disposed on a substrate, and a nozzle member having nozzles adjacent to the substrate for expelling droplets of fluid from one or more nozzles in the nozzle member upon activation of the ejection actuator, wherein the fluid ejection actuator comprises a substantially planer ejection actuator provided by a conductive layer adjacent to the substrate configured to have an anode segment spaced apart from a cathode segment, a thermal barrier segment between the anode segment and cathode segment, wherein the anode segment, cathode segment, and the thermal barrier segment provide a substantially planar surface;
- and a resistive layer adjacent to the substantially planar surface.
A substantially planar resistive fluid ejection actuator, comprising a conductive layer adjacent to a substrate, the conductive layer configured to have an anode segment spaced apart from a cathode segment, a thermal barrier segment disposed between the anode segment and cathode segment, wherein the anode segment, cathode segment and the thermal barrier segment define a substantially planar surface and a resistive layer adjacent to the substantially planar surface.
A method for manufacturing a resistive fluid ejection actuator, comprising:
- configuring a conductive layer adjacent to a support substrate to have an anode segment spaced apart from a cathode segment with a well therebetween,
- applying a thermal barrier layer within the well and over the anode segment and cathode segment;
- removing at least a portion of the thermal barrier layer to expose the anode segment and cathode segment and to define a thermal barrier segment within the well, wherein the anode segment, cathode segment, and the thermal barrier segment provide a substantially planar surface;
- and
- applying a resistive layer adjacent to the planar surface to provide a fluid ejection actuator.
Dependencies are inferred from the claim text.