Fluid ejection devices
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael G. GROH, Bo SONG, Veronica Frances Burnett KRIM
Life of this patent
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Abstract
A fluid ejection device can include a nozzle plate incorporating a non-coplanar surface. The non-coplanar surface can include a hydrophilic region of a hydrophilic material having a water contact angle from about 50° to about 90° and a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160°.
Claims15
A fluid ejection device comprising, a nozzle plate including a non-coplanar surface including a hydrophilic region of hydrophilic material having a water contact angle from about 50° to about 90° and a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160°.
A method of manufacturing a fluid ejection device comprising:
- adhering a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160° onto a nozzle plate of a fluid ejection device, wherein the nozzle plate includes a hydrophilic material having a water contact angle from about 50° to about 90°;
- and
- forming a non-coplanar surface relative to the hydrophobic coating, the non-coplanar surface having a hydrophilic region of the hydrophilic material.
A fluid ejection system, comprising:
- a fluid ejection device including a nozzle plate with a non-coplanar surface having a hydrophilic region of hydrophilic material having a water contact angle from about 50° to about 90° and a hydrophobic coating including a hydrophobic material having a water contact angle from about 91° to about 160°;
- and
- a fluid reservoir fluidly coupled to a firing chamber of the fluid ejection device, wherein the fluid reservoir is loaded or loadable with an ink composition.
Dependencies are inferred from the claim text.