发明授权
- 专利标题： Piezoelectric actuator and ink-jet head, and ink-jet recorder
- 专利标题（中）： 压电致动器和喷墨头，以及喷墨记录器
-
申请号： US10497348申请日： 2003-01-14
-
公开(公告)号： US07264340B2公开(公告)日： 2007-09-04
- 发明人: Takanori Nakano , Shogo Matsubara , Shintaro Hara , Kazuo Nishimura , Masaichiro Tatekawa , Masakazu Tanahashi , Hiroyuki Matsuo
- 申请人： Takanori Nakano , Shogo Matsubara , Shintaro Hara , Kazuo Nishimura , Masaichiro Tatekawa , Masakazu Tanahashi , Hiroyuki Matsuo
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2002-005830 20020115
- 国际申请： PCT/JP03/00187 WO 20030114
- 国际公布： WO03/061024 WO 20030724
- 主分类号： B41J2/045
- IPC分类号： B41J2/045
摘要：
A piezoelectric actuator is constructed by forming a common electrode 27 of Cr, a piezoelectric layer 29 of Pb(Zr,Ti)O3, a cover layer 31 of BaTiO3, and an individual electrode 33 of Pt in this order into a laminate. The thickness of the piezoelectric layer 29 in the lamination direction (T1) and the thickness of the cover layer 31 in the lamination direction (T2) satisfy the relationship of 0.08≦T2/T1≦1. The relative dielectric constant of the piezoelectric layer 29 (εr1) and the relative dielectric constant of the cover layer 31 (εr2) satisfy the relationship of εr2/εr1≧0.2.
公开/授权文献
信息查询
IPC分类:
