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

Claim 11:
12. A method comprising:
determining, by a controller, locations on a build material layer that are to receive a coalescing agent;
controlling, by the controller, a carriage supporting an agent delivery device and an array of microwave energy emitters to be moved across the build material layer;
controlling, by the controller, the agent delivery device to selectively deliver coalescing agent onto the determined locations on the build material layer as the carriage is moved across the build material layer; and
controlling, by the controller, the microwave energy emitters in the array of microwave energy emitters to emit microwave energy onto the build material layer as the carriage is moved across the build material layer, wherein each of the microwave energy emitters includes a resonator having 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 tips wherein the resonator is capacitively coupled to a coaxial feed that is separated from the resonator by a gap.