The invention describes an ink supply system (2) for an inkjet printer (1) with a print head arrangement (6) for at least one color, wherein the print head arrangement (6) comprises several print heads (7) each with several jets, and wherein the print heads (7) are arranged in a row next to one another to form a complete printing area width (10) corresponding to a multiple of a printing area width (9) of an individual print head (7). Each of the print heads (7) is connected by a line to an intermediate tank (12) for ink of the respective color, wherein several print heads (7) are connected to a common intermediate tank (12).