| 摘要 |
PURPOSE:To enable electrostatic painting of a material to be coated having a high electric resistance value by providing an electrode on the rear of said material and impressing the high voltage of the potential, reverse to the potential of the high voltage to be impressed on a painting machine on said electrode. CONSTITUTION:A corona discharge electrode 11 is provided on a rear 1B side facing a painting machine 4 via a resin plate 1, and the electrode 11 is connected via a high-voltage cable 12 to a high-voltage generator 13 for reverse potential. The generator 13 increases a commercial voltage to the DC high voltage of the potential reverse from the potential of a high-voltage generator 10, impresses the same on each corona pin 11A and forms an ionizing region A of plus ions by discharging corona from the tips of the pins 11A toward the rear 1B of the plate 1. Therefore the electric charge electrified on the front 1A surface of the plate 1 attenuates and the surface potential of the plate 1 is made to roughly the earth potential so that the electrified particles of the sprayed paint stick efficiently on the plate 1.
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