INK JET DEVICE FOR RELEASING CONTROLLABLY A PLURALITY OF SUBSTANCES ONTO A SUBSTRATE, METHOD OF DISCRIMINATING BETWEEN A PLURALITY OF SUBSTANCES AND USE OF AN INK JET DEVICE

摘要

The invention provides an ink jet device for releasing controllably a plurality of substances onto a substrate, the device comprising at least a print head comprising a nozzle, the device comprising at least a transducer provided to eject a droplet out of the nozzle, wherein a detection means is assigned to the ink jet device such that the substances are discriminable from each other by means of the detection of the behaviour of the transducer.