An ink containing apparatus (1) for containing ink includes a negative pressure producing material (3); a first container (4) for containing the negative pressure producing material, the first container having an air vent (13) and a supply port (2) for supplying the ink out; a second container (6) for containing ink; a communication part (8) for communication between bottom portions of the first and second containers; and ribs (5,61) for introducing ambient air adjacent the air vent for introducing air into the communication part.