Patent ID: 8329258

Claim:
A method for electrostatic coating of an electrically conducting workpiece with coating powder, wherein the workpiece is earthed, wherein a potential, which is negative compared to that of the workpiece, is applied to an electrode, wherein a potential, which is positive compared to that of the workpiece, is applied to a counter-electrode, wherein the potential in an area of the workpiece in which the workpiece is to be coated is set, depending on the desired powder layer thickness in said area, by means of a control unit which controls the potentials respectively applied to the electrode and counter-electrode, wherein the workpiece is sprayed with coating powder in said area to be coated by means of a powder spray gun carrying the electrode, the electrode and counter-electrode serving to create an electrostatic field between the powder spray gun and the counter-electrode, and the workpiece being sprayed with the coating powder within the electrostatic field, and wherein the counter-electrode is moved synchronously with the electrode.