Patent ID: 7854495

Claim:
A liquid storage tank comprising: a tank main body for storing a liquid supplied to a liquid consumption device and attached to a tank attached portion of the liquid consumption device in a detachable manner; a circuit chip equipped with a pair of chip contact points on a flat connection outer surface on a chip main body positioned at a predetermined position of the tank main body; and a pair of connection terminal plates each including: a chip contact piece positioned around the circuit chip in the tank main body and extending on the connection outer surface from one side of the connection outer surface to make contact with the corresponding chip contact point, and another circuit connection portion conductively connected to a contact point of another circuit, the pair of connection terminal plates conductively connecting the corresponding chip contact point to the other circuit; wherein each chip contact point has an extending portion extending to an edge of one side of the connection outer surface at a rim positioned at one side of the connection outer surface to which the corresponding chip contact piece extends.