TECHNOLOGY FOCUS - IMAGING AND COMMUNICATION - Preferred Method: The printing paste is washed with the aqueous solvent with at least 95 wt.%, preferably 99 wt.% of water. The printing paste is applied through a printing process, preferably a screen printing process or ink-jet method. The printing paste is applied in a layer thickness of 10-50 (preferably 15-35) mu m. The active layer is applied through physical vapor deposition or chemical vapor deposition, preferably sputtering or magnetron sputtering. The active layer is applied in a layer thickness of 10-1000 (preferably 150-700) nm.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The active layer contains tin-doped indium oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide, antimony-doped tin oxide, aluminum, zinc, indium, gallium, silver, gold, chromium, tin, tungsten, copper, cadmium, niobium, strontium, silicon, selenium and/or their mixtures or alloys.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The printing paste further contains (e) a water soluble dye, preferably fluorescein, methylene blue, and/or food coloring. Preferred Components: The component (c) has a vapor pressure of less than 5, preferably less than 1 kPa. The component (c) is ethylene glycol, glycerol, propylene glycol, butyl glycol and/or N-methyl-2-pyrrolidone. The component (d) is 1-12C-alcohols, glycerides of fatty acids, glycerides of fatty acid esters and/or polydimethylsiloxane.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The component (b) is polyethylene oxide, polysaccharide, poly alcohol, polyvinyl alcohol, polyacetal, polyurethane, polyvinyl acetate, polyamide and/or mixtures or copolymers, preferably polyethylene oxide, polypropylene oxide, carboxymethylcellulose, hydroxypropyl cellulose, starch, amylose, amylopectin, xanthan gum, alginates, carrageenan, guar gum, locust bean gum and/or their mixtures or copolymers. The component (b) is a polyvinyl alcohol having a molecular weight of 15000-150000 g/mole and an ester value of 100-180 mg potassium hydroxide (KOH)/g. EXAMPLE - Typical paste comprised (in wt.%) of: Mowiol 4-88 (RTM: Polyvinyl alcohol) (30); glycol (15); water (54.5); and Agitan 295 (RTM: Blend of liquid hydrocarbons, hydrophobic silica, fatty and alkoxylated compounds and non-ionic emulsifiers) (0.5).