Patent ID: 8215755

Claim:
A liquid supply apparatus comprising: a container mounting portion; and a liquid container configured to be removably mounted to the container mounting portion, the liquid container comprising: a case configured to store liquid therein; and a movable member positioned in the case and configured to move relative to the case according to an amount of liquid stored in the case, wherein the movable member and the case comprise a pair of magnetic materials on which a magnetic force acts, such that the pair of magnetic materials attracts each other, when the liquid container is not mounted to the container mounting portion, the movable member is in a fixed state in which the movable member is fixed to the case by the magnetic force acting between the pair of magnetic materials, and the container mounting portion comprises a release member configured to release the movable member from the fixed state by generating a magnetic force acting between the pair of magnetic materials, such that the pair of magnetic materials separates away from each other, when the liquid container is mounted to the container mounting portion.