Patent ID: 7699453

Claim:
A liquid storage container opened to the atmosphere and attachable to and detachable from a liquid-consuming apparatus, the liquid storage container comprising: liquid storage chambers that store liquid; a liquid-supplying unit connectable to the liquid-consuming apparatus; liquid guide paths for guiding the liquid contained in the liquid storage chambers to the liquid-supplying unit; an atmosphere communicating path that allows atmospheric air to flow into one of the liquid storage chambers from the outside as the liquid in the liquid storage chambers is consumed; and a liquid remaining-amount sensor disposed at an intermediate position of one of the liquid guide paths and determining that the liquid in the liquid storage chambers has run out when a flow of gas into the one of the liquid guide paths is detected, wherein the number of the liquid storage chambers provided in the liquid storage container is three or more, wherein a descending connection that connects a pair of the liquid storage chambers to each other with one of the liquid guide paths such that the liquid descends downward therethrough and an ascending connection that connects a pair of the liquid storage chambers to each other with another one of the liquid guide paths such that the liquid ascends upward are alternately provided to connect the liquid storage chambers in series, and wherein the one of the liquid guide paths at which the liquid remaining-amount sensor is disposed connects a pair of the liquid storage chambers provided downstream from the one of the liquid storage chambers communicating with the atmosphere.