TonerJet® is a novel print technology developed by Array Printers AB in Sweden. It is a direct printing method with the possibility to be a challenge to the electrophotographic technologies in the area of color office printers and multifunction machines.During the last year significant progress has been made in print quality, horizontal banding has been removed, dot positioning and uniformity in solid areas have been greatly improved.Historically there have been problems with toner supply, giving vertical stripes in solid areas. Since the TonerJet® print head usually uses two rows of apertures, the amount of toner used by the first row affects the available amount of toner for the next row. Array Printers has studied the problem and in this paper hardware, software and process solutions will be presented. Advantages, disadvantages and implementation will be discussed.