The central element of the IJ4000 is always the ink distribution system with control - the so-called SmartIDS ("Smart Ink Delivery System"). You can operate up to 4 printheads (see table, IJ384E and IJ768E) on one SmartIDS. In addition to the standard printheads for horizontal, straight printing (see table, IJ384E and IJ768E), there is a variant for printing in a horizontal, angled position and a variant for vertical (upside-down) printing. Important for your application is: Number of printheads Print height of each printhead Print direction of each printhead (standard, angled, upside down) Our experts will be happy to advise you.