be opened into the liquid supply chamber 14 or moved farther into the air chamber 18 the positive supply of air causes the excess edge bead removal solvent to flow out of the liquid discharge aperture 22 the positive supply of air can be turned on at or near the time the flow of the edge bead removal solvent is shut off so that the edge bead removal solvent flow is continuous until the nozzle tip 21 is emptied the positive air flow also ensures that the second flap 28 remains closed during the removal or cleansing operation another alternate embodiment of the edge bead removal nozzle is illustrated in fig6 in the embodiment of fig6 the nozzle includes a movable flap 30 disposed inside the liquid chamber 14 the movable flap moves between a first position closing off the liquid chamber 14 from the liquid discharge aperture 22 and a second position closing the air chamber 18 from the liquid chamber 14 in this embodiment the air supply port 20 can be connected to a positive supply of air so that the edge bead removal solvent can move the movable flap 30 to the second position during discharge of the solvent and move.