Patent ID: 7905583

Claim:
An ink supply system to which an ink of a predetermined color is supplied from an ink supply section, comprising: a recording head group in which there are provided a plurality of recording heads each including a plurality of ink nozzles through which the ink of the predetermined color is discharged to a recording medium to be carried; a reservoir tank which stores the ink of the predetermined color supplied from the ink supply section; and an ink chamber which distributes and supplies the ink of the predetermined color, which is fed from the reservoir tank, to the recording heads provided in the recording head group; wherein an inside of the ink chamber is maintained in a predetermined negative pressure state; wherein a plurality of ink supply openings are provided in the ink chamber, a number of the ink supply openings being equal to at least a number of the recording heads; and wherein a plurality of respective connection paths which are connected from the plurality of ink supply openings to a plurality of head-side ink supply openings each have substantially a same length, a number of the respective connection paths being equal to at least the number of the recording heads.