Patent ID: 8029120

Claim:
A liquid container comprising: a case in which a flow channel of a liquid is exposed from an opening; a sensor base, disposed in the opening of the case to face the flow channel; a sensor chip, including: a piezoelectric element, mounted on a surface opposite to a surface of the sensor base which faces the flow channel; and a sensor cavity, disposed opposite to the piezoelectric element and adapted to receive the liquid as a detection target; a film, adapted to hold the sensor base in the opening and sealing the opening; a partition wall, partitioning the flow channel in the case into an upstream buffer chamber and a downstream buffer chamber; and a bubble trapping section, disposed upstream of the upstream buffer chamber, wherein the bubble trapping section includes: a bubble trapping chamber, adapted to trap bubbles upside by allowing the liquid level to be lowered with reduction in an amount of remaining liquid at a time of consuming the liquid; an inlet, communicating at a vertical upper position of the bubble trapping chamber to introduce the liquid at the time of consuming the liquid; and an outlet, communicating at a vertical lower position of the bubble trapping chamber to discharge the liquid at the time of consuming the liquid.