Patent ID: 7926928

Claim:
A droplet ejection apparatus comprising: a head unit having at least one sub-tank that stores liquid, and an ejection head that ejects the liquid supplied from the sub-tank in a form of droplets; a head unit mover that moves the head; an absorber stored inside the sub-tank, and made of a porous resilient member that absorbs the liquid inside the sub-tank; a presser that compresses the absorber which has the liquid absorbed therein with a compression force, such that at least two different states of compression of the absorber are provided, and thereby discharges some of the liquid inside the sub-tank; a liquid replenisher that replenishes the liquid into the sub-tank at a side of the absorber to which the compression force is applied; and a press operator that operates the presser to compress the absorber when the liquid is replenished into the sub-tank by the liquid replenisher, such that the discharged liquid from the absorber and the newly replenished liquid are reliably mixed; wherein the liquid replenisher comprises: at least one replenishment tank that stores the liquid to be replenished; and an actuator that moves the replenishment tank toward the sub-tank from a predetermined position so as to connect the replenishment tank and the sub-tank; and wherein the press operator operates the presser by movement of the replenishment tank.