Patent ID: 8366258

Claim:
An inkjet printer comprising: an ink tank for retaining ink; inkjet nozzles for ejecting the ink to perform printing; an ink flow passage for connecting the ink tank and the inkjet nozzles; a filter disposed within the ink flow passage; suction means for sucking the ink through the inkjet nozzles at recovery; opening and closing means for opening and closing the ink flow passage; and a filter chamber in which the filter is arranged horizontally, wherein the opening and closing means is disposed upstream of the filter chamber, a first room is disposed downstream of the filter and a second room is disposed upstream of the filter in the filter chamber, an ink discharge opening is disposed in the first room for supplying the ink to the inkjet nozzles, an ink supply opening to which the ink is supplied from the ink tank and an air bubble storage unit for storing air bubbles flowing with the ink are disposed in the second room, the ink supply opening and the ink discharge opening are arranged to sandwich the filter and are displaced from each other in a horizontal direction, the air bubble storage unit is arranged upward of the ink supply opening in a perpendicular direction and is arranged to oppose the ink discharge opening in such a manner as to sandwich the filter therebetween, and the suction means expands the air bubble stored in the air bubble storage unit to a size equal to or more than that of the second room.