Patent ID: 7520599

Claim:
An ink-jet recording apparatus comprising: a recording head which performs recording on a recording medium by ejecting ink droplets from ink ejection apertures; an ink channel which supplies the recording head with ink that is supplied from an ink supply source; and a valve body which controls the supply of ink to the recording head in the ink channel, wherein the ink channel has a valve accommodation room which accommodates the valve body in a movable manner, a valve opening opened and closed by the valve body is formed in a wall surface which is located at one end of the valve accommodation room in a movement direction of the valve body, and the valve opening and the valve accommodation room are connected to the ink supply source and the recording head, respectively; in an ordinary state the valve body is urged to be located at a position where the valve body is in contact with the wall surface and to close the valve opening, and defines, with the wall surface, a space which is independent of the valve opening and the valve accommodation room; and when the valve body is opened by a pressure reduction in the valve accommodation room due to ejection of ink droplets from the recording head, a pressure in the space acts to move the valve body in such a direction as to open the valve opening.