This work shows in details the design and performance of precise ink jet printing system which has been constructed for organic electronic technology analysis. The printing system was designed for laboratory investigation of inks and substrates compatibility. Printing system has been tested by its precision and abilities by fabrication electronic elements. PEDOT: PSS, Sun Tronic U6415, Nano silver based inks were tested. Glass, alumina ceramic, PEN foil and paper were tested as substrates. Printer was design in order to solve disadvantages of commercial systems. It has improved software with user friendly graphic interface, improved accuracy and precision. New drop watch solution has been develop. In the investigation, compatibility of materials and inks was tested. Methods of making inks and substrates compatible, by setting the substrate temperature, ink jet printhead voltage and geometry, were studied. Printed lines after sintering process become conductive. Ohmic resistance of lines was measured and their quality was evaluated.