Hydrophobically coated printhead
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
Estimating the term…
Abstract
A printhead comprising a plurality of nozzles formed on a substrate is provided. Each nozzle comprises a nozzle chamber, a nozzle opening defined in a roof of the nozzle chamber and an actuator for ejecting ink through the nozzle opening. At least part of an ink ejection face of the printhead is hydrophobic relative to the inside surfaces of each nozzle chamber. An advantage of this arrangement is that the hydrophobic ink ejection surface assists in ink ejection and minimizes cross-contamination by flooding between adjacent nozzles.
Claims20
A printhead comprising a plurality of nozzles formed on a substrate, each nozzle comprising a nozzle chamber, a nozzle opening defined in a roof of the nozzle chamber and an actuator for ejecting ink through the nozzle opening,
- wherein at least part of an ink ejection face of the printhead is hydrophobic relative to the inside surfaces of each nozzle chamber.
The printhead of claim 20, wherein the hydrophobizing compound is a silyl monochloride.
Dependencies are inferred from the claim text.