Patent ID: 7971976

Claim:
A liquid storage container adapted to be attached to a liquid-consuming apparatus, the liquid storage container comprising: a liquid storage chamber that stores liquid therein; a liquid-supplying unit adapted to be connected to the liquid-consuming apparatus; a liquid guide path configured to guide the liquid stored in the liquid storage chamber to the liquid-supplying unit; an atmosphere communicating path configured to allow atmospheric air to flow into the liquid storage chamber from the outside as the liquid in the liquid storage chamber is consumed; and a liquid remaining-amount sensor disposed at an intermediate position of the liquid guide path and determining that the liquid in the liquid storage chamber has run out when a flow of gas into the liquid guide path is detected, wherein the atmosphere communicating path has a thin communicating path portion at an intermediate position thereof, the thin communicating path portion being thinner than other communicating path portions and being capable of holding a portion of the liquid stored in the liquid storage chamber by a meniscus, and wherein an amount of liquid sufficient for blocking the liquid stored in the liquid storage chamber from the atmospheric air is held in the thin communicating path portion, and wherein the liquid storage chamber includes a first liquid storage chamber communicating with the atmosphere communicating path, and a second liquid storage chamber disposed below and downstream from the first liquid storage chamber, and wherein the liquid guide path includes a descending connection path portion communicating with the first and second liquid storage chambers such that the liquid descends downward therethrough, one end of the descending connection path portion communicating with a liquid outlet of the first liquid storage chamber and the other end of the descending connection path portion communicating with a liquid inlet of the second liquid storage chamber, and wherein one end of the thin communicating path portion is positioned near a bottom wall of the first liquid storage chamber and positioned above the liquid outlet of the first liquid storage chamber, and the other end of the thin communicating path portion is positioned below the bottom wall of the first liquid storage chamber.