Patent ID: 11872757
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 6:
7. A three dimensional (3D) fabrication system comprising:
an agent delivery device;
an array of microwave energy emitters, each of the microwave energy emitters including:
a tip that focuses microwave energy emitted from the microwave energy emitter onto a respective area adjacent to and beneath the tip when microwave energy is emitted through the tip;
a resonator, wherein the tip is attached to the resonator;
a coaxial feed that is separated from the resonator by a gap and wherein the resonator is capacitively coupled to the coaxial feed; and

a controller to:
control the agent delivery device to deliver a coalescing agent onto locations of a build material layer including build material that is to be coalesced based on a slice of a 3D object model; and
control the array of microwave energy emitters to emit energy onto the build material layer.