发明名称 |
Ink-jet recording head with piezoelectric device and method for manufacturing the same |
摘要 |
<p>A piezoelectric device for an ink jet print head that has a greater displacement at a low drive voltage. The ink-jet recording head comprises vibration plate, on which is mounted one or more piezoelectric devices that change the volumes of pressure chambers upon application of a voltage. The device is mounted at least on one face of a pressure chamber substrate that is to be filled with ink. Such piezoelectric device (4) a second piezoelectric layer (42) having a piezoelectric constant g of a constant value or higher; and a first piezoelectric layer (41) having a dielectric constant of a specific value or higher. Since the piezoelectric constant d of the piezoelectric device correlates with the product of the largest piezoelectric constant g and the largest dielectric device of the piezoelectric devices, a piezoelectric constant d larger than in the conventional case, i.e., having a greater displacement, can be obtained. <IMAGE></p> |
申请公布号 |
EP0877430(A3) |
申请公布日期 |
1999.12.08 |
申请号 |
EP19980105341 |
申请日期 |
1998.03.24 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
QIU, HONG;MORIYA, SOHICHI;KAMEI, HIROYUKI;SUMI, KOJI |
分类号 |
B41J2/045;B41J2/055;B41J2/135;B41J2/14;B41J2/16;C04B35/49;C04B35/493;H01L41/09;H01L41/187;H01L41/318;H01L41/39;(IPC1-7):H01L41/09 |
主分类号 |
B41J2/045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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