and 304 a f are supplied with ink having the same color in other embodiments the group of cartridges 302 a f supplied with ink having a first color and 304 a f may be supplied with ink having a second color similarly in some embodiments a single control system receives a line of image data e g a raster line and coordinates the ejection of ink accordingly from all of the cartridges mounted on the carrier 300 to reproduce the line on the substrate 306 in other embodiments a first control system and a second control system each receive a line of image data the first control system coordinates ejection of ink from a first group of printing cartridges e g print cartridges 302 a f in accordance with the line of image data and the second control system coordinates ejection of ink from a second group of printing cartridges e g printing cartridges 304 a f in accordance with the line of image data in yet another embodiment a first control system receives a first portion of the line of image data and coordinates the ejection of ink from the first group of printing cartridges in accordance therewith in this embodiment the second control system receives a.