Patent ID: 8272726

Claim:
An inkjet head having an ink nozzle capable of ejecting ink onto a recording medium, comprising: an ink reservoir to store the ink to be ejected therein, the ink reservoir comprising a wall extending from a bottom of the ink reservoir to divide the ink reservoir into a first ink chamber and a second ink chamber, the first and the second ink chambers being in fluid communication with each other over a top edge of the wall, the wall including a through hole formed in a vicinity of the bottom of the ink reservoir, the through hole allowing the first and the second ink chambers to be in fluid communication with each other; an ink inlet, through which the ink is introduced into the ink reservoir, the ink inlet introducing the ink into the first ink chamber; and an ink outlet, through which the ink in the ink reservoir is allowed to flow to the ink nozzle, the ink outlet discharging the ink in the second ink chamber to the ink nozzle, wherein a ratio of a flow path resistance value of the ink at the through hole to a flow path resistance value of the ink in the first ink chamber is at least 14:1.