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US 8,783,831 B2Granted
Fluid ejection device having firing chamber with contoured floor
AssigneeHewlett-Packard Development Company, L.P.
InventorsPeter Mardilovich, Lawrence H. White, Erik D. Torniainen
Life of this patent
Estimating the term…
Abstract
A fluid ejection device includes a firing chamber having a chamber floor with an orifice opposite the chamber floor and a heating element partially covering the chamber floor, a region of the chamber floor being contoured to define a cavity extending into the chamber floor.
Claims15
A fluid ejection device comprising:
- a firing chamber having a chamber floor and an orifice opposite the chamber floor;
- and
- a heating element partially covering the chamber floor to define an uncovered region of the chamber floor;
- wherein the uncovered region of the chamber floor is contoured to define a cavity extending into the chamber floor.
1 more element
A fluid ejection device comprising:
- a firing chamber having a fluid inlet, an ejection orifice and a chamber floor opposite the ejection orifice, the chamber floor having a central region with a cavity formed therein;
- and
- a heating element within the firing chamber, the heating element extending around the cavity.
A fluid ejection device comprising:
- a firing chamber having a chamber floor, one or more walls and a nozzle layer with an orifice opposite the chamber floor;
- a ring-type heating element on the chamber floor, the heating element defining an inner perimeter;
- and
- a cavity defined in the chamber floor, the cavity being coextensive with the inner perimeter.
1 more element
Dependencies are inferred from the claim text.