发明名称 |
Piezoelectric actuator, liquid-drop ejecting head, and liquid-drop ejecting apparatus |
摘要 |
<p>A liquid drop ejecting head for ejecting liquid drops from nozzles communicating with liquid chambers includes a piezoelectric actuator including a diaphragm whose ends are fixed in a short-side direction of the diaphragm and an active element mounted on the diaphragm. The active element is contractible and extendable by a supply of a voltage to displace the diaphragm in an out-of-plane direction. The diaphragm is displaced with curvature so as to have a plurality of inflection points in the short-side direction. The active element is disposed in at least one area of an area from each of the ends of the diaphragm to a proximal inflection point of the inflection points and an area from one inflection point to another neighboring inflection point of the inflection points in a cross-section in the short-side direction of the diaphragm.</p> |
申请公布号 |
EP2123458(B1) |
申请公布日期 |
2013.09.18 |
申请号 |
EP20090251332 |
申请日期 |
2009.05.18 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
TANAKA, SHINJI;NISHIMURA, MANABU |
分类号 |
B41J2/14 |
主分类号 |
B41J2/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|