| 发明名称 | Liquid-ejecting head and liquid-ejecting apparatus | ||
| 摘要 | 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. | ||
| 申请公布号 | US8789927(B2) | 申请公布日期 | 2014.07.29 |
| 申请号 | US201113040627 | 申请日期 | 2011.03.04 |
| 申请人 | Seiko Epson Corporation | 发明人 | Yonemura Takayuki |
| 分类号 | B41J2/015;H01L41/00;H02N2/00 | 主分类号 | B41J2/015 |
| 代理机构 | Workman Nydegger | 代理人 | Workman Nydegger |
| 主权项 | 1. A piezoelectric element comprising: a piezoelectric layer; and a pair of electrodes associated with the piezoelectric layer, 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, and wherein the piezoelectric layer contains bismuth sodium potassium titanate represented by the following formula: {x[(Bia,Na1-a)TiO3]-(1-x)[(Bib,K1-b)TiO3]}where, 0.4<a<0.6, 0.4<b≦0.6, and 0.5≦x≦0.85. | ||
| 地址 | Tokyo JP | ||