Patent ID: 7887246

Claim:
A liquid supply device comprising: a main body having a hollow portion; a partition that divides the hollow portion into a liquid storage chamber which stores a liquid and a reservoir chamber communicated with the atmosphere and that is provided with a through hole formed in a center portion of the partition; an application material that is provided in the main body and that applies the liquid in the liquid storage chamber; a porous relay core that supplies the liquid in the liquid storage chamber to the application material and that is inserted in the through hole to form a gap with an inner wall of the through hole, the gap holding the liquid by capillary force; and a partition extending portion which extends from the partition, and protrudes to a liquid storage chamber side along the relay core, and in which the relay core is inserted to form the gap holding the liquid by capillary force, wherein the partition extending portion is provided in the partition to be higher than a surface of the liquid stored in the liquid storage chamber when the application material is pointed downward, and a second partition provided with a through hole in which the relay core is inserted, is disposed in the reservoir chamber.