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US 2011/0216135 A1Published application
Liquid-ejecting head and liquid-ejecting apparatus
AssigneeSeiko Epson Corporation
InventorTakayuki YONEMURA
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Abstract
A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening and includes a piezoelectric element including a piezoelectric layer and electrodes. The piezoelectric layer contains bismuth sodium potassium titanate and satisfies the inequality 0≦Pr/Pm≦0.25 at 25° C., where Pm and Pr are the saturation polarization and remanent polarization, respectively, of the piezoelectric layer.
Claims5
A liquid-ejecting head comprising:
- a pressure-generating chamber communicating with a nozzle opening;
- and
- a piezoelectric element including a piezoelectric layer and electrodes,
- wherein the piezoelectric layer contains bismuth sodium potassium titanate and satisfies the inequality 0≦Pr/Pm≦0.25 at 25° C., where Pm and Pr are the saturation polarization and remanent polarization, respectively, of the piezoelectric layer.
1 more element
Dependencies are inferred from the claim text.