发明申请
- 专利标题： Liquid-detecting device and liquid container with the same
- 专利标题（中）： 液体检测装置和液体容器相同
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申请号： US10529491申请日： 2004-02-10
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公开(公告)号： US20060170718A1公开(公告)日： 2006-08-03
- 发明人: Tomoaki Takahashi , Takahiro Katakura , Satoshi Shinada
- 申请人： Tomoaki Takahashi , Takahiro Katakura , Satoshi Shinada
- 优先权： JP2003-032596 20030210; JP2003-056020 20030303; JP2003-055806 20030303; JP2003-055820 20030303; JP2003-056009 20030303; JP2003-107736 20030411
- 国际申请： PCT/JP04/01412 WO 20040210
- 主分类号： B41J2/195
- IPC分类号： B41J2/195
摘要：
A first electrode (46) has a main portion (46a) covering almost the overall area of a concavity (43) and including a notch (46c). A piezoelectric layer (47) has a main portion (47a) in a diameter smaller than that of the concavity (43), and the whole thereof is within the concavity area, and almost overall the main portion (47a) excluding the part corresponding to the notch (46c) is laminated on the first electrode (46). An auxiliary electrode (48) extends from the outside of the concavity area into the inside thereof and a part thereof is positioned within the notch (46c) of the first electrode (46) and supports a part of the piezoelectric layer (47). A second electrode (49) has a main portion (49a) laminated on the piezoelectric layer (47) and an extension part (49b) which extends from there and is connected to the auxiliary electrode (48) within the concavity area. The residual vibration state of a vibration part of a liquid-detecting device can be detected easily and surely, and generation of cracks in the piezoelectric layer can be prevented.
公开/授权文献
- US07270386B2 Liquid-detecting device and liquid container with the same 公开/授权日：2007-09-18
信息查询
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