Patent ID: 7185976

Claim:
A liquid supply system comprising: a liquid accommodating section having a liquid storage adapted to store liquid, the liquid accomodating section including means for generating a negative pressure with respect to an atmospheric pressure within the liquid storage; a liquid-using section; a liquid chamber in communication with the liquid-using section; a plurality of communication paths, including first and second communication paths, that facilitates communication between the liquid chamber and the liquid accommodating section; the liquid chamber includes a substantially hermetically sealed space except where the space communicates with the plurality of communication paths and with the liquid-using section; and each of the first and second communication paths includes a liquid chamber side opening extending into the liquid chamber and a liquid accommodating section side opening extending into the liquid accommodating section, wherein the liquid chamber side opening of the first communication path extends substantially further into the liquid chamber than the liquid chamber side opening of the second communication path, and the liquid accommodating section side opening of the second communication path extends substantially further into the liquid accommodating section than the liquid accommodating section side opening of the first communication path.