Patent ID: 8746850

Claim:
A method for forming an inkjet printhead, comprising: forming a back end subassembly comprising an external manifold configured to receive liquid ink; forming a front end assembly comprising an aperture plate having a plurality of nozzles therein; forming a substrate assembly using a method comprising: forming a substrate having at least one resistive heater trace; and forming a deflectable diaphragm over the substrate such that an air gap is located between the substrate and the deflectable diaphragm; attaching the back end subassembly to the substrate assembly using a first adhesive layer; and attaching the front end subassembly to the substrate assembly using a second adhesive layer, wherein the back end subassembly, the substrate assembly, and the front end subassembly together provide an ink port configured for the flow of liquid ink from the external manifold to one of the plurality of nozzles and the at least one heater trace is configured to heat liquid ink flowing from the external manifold to one of the plurality of nozzles.