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US 7,125,731 B2Granted
Drop generator for ultra-small droplets
AssigneeHewlett-Packard Development Company, L.P.
InventorsCharles C Haluzak, Kenneth E. Trueba, Terry E McMahon, Donald W Schulte
Life of this patent
Estimating the term…
Abstract
A drop generator includes a substrate, and a mandrel that is disposed on the substrate for shaping the drop generator chamber. The mandrel is covered by the orifice member and thereafter removed.
Claims18
A method of making a drop generator, comprising:
- providing a substrate having an inlet opening;
- applying removable material on the substrate and in the inlet opening;
- shaping some of the removable material to define a chamber region;
- forming an orifice member on the substrate to cover substantially all of the removable material but for an orifice in the orifice member;
- and
- removing the removable material from the chamber region and the inlet opening to form a chamber having an inlet.
3 more elements
A method of making a drop generator including:
- applying removable material on a substrate;
- shaping some of the removable material to define a chamber region;
- forming an orifice member on the substrate to cover the removable material;
- making an orifice in the orifice member by planarizing the orifice member;
- and
- removing the removable material from the substrate so that a chamber remains.
3 more elements
Dependencies are inferred from the claim text.