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    • 3. 发明申请
    • CONTAINER HAVING LIQUID DETECTING FUNCTION
    • 具有液体检测功能的容器
    • WO2006064926A1
    • 2006-06-22
    • PCT/JP2005/023193
    • 2005-12-12
    • SEIKO EPSON CORPORATIONZHANG, JunhuaKATAKURA, TakahiroKATSUMURA, Takayoshi
    • ZHANG, JunhuaKATAKURA, TakahiroKATSUMURA, Takayoshi
    • B41J2/175
    • G01F23/296B41J2/17566
    • A container having a liquid detecting function includes a cartridge case 101 having a sending passage for sending out a liquid stored therein, buffer chambers 122 and 123 disposed in the vicinity of the end of the sending passage, and a sensor unit 200 disposed to face on the buffer chambers. A sensor chip 230 provided in the sensor unit includes a sensor cavity 233 communicating with the buffer chambers, a vibration plate 233 closing an opening side of the sensor cavity opposite to the side communicating with the buffer chambers, and a piezoelectric element 234 which is disposed on the surface of the vibration plate opposite to the surface facing the sensor cavity, emits a vibration wave to the sensor cavity and the buffer chambers through the vibration plate, receives a reflected wave returning from the buffer chambers through the vibration plate, and then converts the reflected wave into an electrical signal. The compliance values of the buffer chambers 122 and 123 are set to be ten times greater than the compliance value of the sensor cavity. (Fig. 17)
    • 具有液体检测功能的容器包括具有用于发送存储在其中的液体的送出通道的盒壳体101,设置在发送通道的端部附近的缓冲室122和123以及设置成面对的传感器单元200 缓冲室。 设置在传感器单元中的传感器芯片230包括与缓冲室连通的传感器腔233,闭合传感器腔的与缓冲室连通的侧面的开口侧的振动板233,以及设置在压电元件234上的压电元件234 在与面向传感器腔的表面相对的表面上,通过振动板向传感器腔和缓冲室发出振动波,接收从缓冲室通过振动板返回的反射波,然后转换 反射波变成电信号。 缓冲室122和123的顺应值被设定为传感器腔的柔量值的十倍。 (图17)
    • 4. 发明申请
    • LIQUID SENSOR AND LIQUID CONTAINER INCLUDING THE SENSOR
    • 液体传感器和液体容器,包括传感器
    • WO2006004198A2
    • 2006-01-12
    • PCT/JP2005/012633
    • 2005-07-01
    • SEIKO EPSON CORPORATIONZHANG, Junhua
    • ZHANG, Junhua
    • B41J2/00
    • B41J2/17566G01F23/2967G01F23/2968
    • The invention relates to a liquid sensor which can certainly judge the existence of liquid, and a liquid container including the sensor. The liquid sensor has: a vibration cavity forming base portion 40 having a first surface and a second surface opposite to each other, in which a cavity 43 for receiving liquid as a detection object is opened at a side of the first surface, and a bottom of the cavity 43 is capable of vibrating; and a piezoelectric element including a first electrode 46 formed at a side of the second surface of the vibration cavity forming base portion, a piezoelectric layer 47 laminated on the first electrode, and a second electrode 49 laminated on the piezoelectric layer. A shape of the cavity 43 in a plan view has a longitudinal dimension and a lateral dimension smaller than the longitudinal dimension.
    • 本发明涉及一种能可靠地判断液体存在的液体传感器,以及包括该传感器的液体容器。 液体传感器具有形成振动腔的基部40,该振动腔形成基部40具有彼此相对的第一表面和第二表面,用于接收作为检测对象的液体的腔体43在第一表面侧开口,并且底部 腔体43能够振动; 以及包括形成在振动腔形成基部的第二表面一侧的第一电极46,层压在第一电极上的压电层47和层压在压电层上的第二电极49的压电元件。 空腔43在平面图中的形状具有纵向尺寸和小于纵向尺寸的横向尺寸。