Patent ID: 7118204

Claim:
A liquid container storing a liquid that forms a plurality of concentration layers in a static state and having a supply port for supplying the liquid to another device, the liquid container comprising: a hollow tubular member whose one end installed in the liquid container is connected to the supply port, wherein the tubular member extends vertically upward from a bottom of the liquid container to a height almost equal to an inner height of the liquid container; plural liquid supply holes formed in the tubular member at a plurality of vertically spaced locations, wherein each of the plural liquid supply holes introduces nearby liquid into the tubular member; and an air introducing port provided at a bottom of the tubular member to introduce air into the tubular member, wherein said air introducing port and said supply port are both located at a bottom of said hollow tubular member; wherein the liquid in the liquid container is introduced into the tubular member through the plural liquid supply holes and the liquid thus introduced is supplied from the supply port to another device, and the air introduced into the tubular member through the air introducing port rises as a bubble in the tubular member to agitate the liquid inside the tubular member.