Patent ID: 7452064

Claim:
An ink tank for supplying ink to an ink jet type recording head, comprising: an ink chamber containing the ink; an ejection opening formed through a bottom of said ink chamber, to eject the ink from said ink chamber toward said recording head; and a residual ink ejecting mechanism disposed in said ink chamber, said residual ink ejecting mechanism comprising a liquid send-out member movable between a standby position and a send-out position, a biasing member for biasing said liquid send-out member toward said send-out position, and a lock member movable between a lock position for locking said liquid send-out member in said standby position against a biasing force of said biasing member, and an unlock position allowing said liquid send-out member to move to said send-out position, wherein said liquid send-out member pushes out a residue of the ink, which remains on the bottom of said ink chamber, toward said ejection opening, while moving to said send-out position.