Patent ID: 8857957

Claim:
A method of manufacturing a liquid container, the liquid container including: a casing provided with a container portion for containing liquid, a supply opening through which the liquid inside the container portion is supplied outside of the liquid container, and a detection member for detecting an amount of the liquid in the container portion, wherein the container portion is partitioned into: a first container chamber for containing the liquid, a second container chamber that is provided downstream from the first container chamber with respect to a flow of the liquid from the container portion toward the supply opening, and that is in communication with the first container chamber, a third container chamber that is provided downstream from the second container chamber and that is in communication with the second container chamber, and a fourth container chamber that is provided downstream from the third container chamber and that is in communication with the third container chamber, the fourth container chamber being provided inside the third container chamber and being partitioned by a first sheet member from the third container chamber, the detection member being provided inside the fourth container chamber, the method comprising: forming, in the liquid container, an injection opening in communication with the container portion at the fourth container chamber or downstream from the fourth container chamber; and injecting liquid into the injection opening.