Patent ID: 8083911

Claim:
Apparatus for coating a substrate comprising: 1.1 a vacuum chamber ( 2 ); 1.2 n cathodes ( 7 - 10 ) inside said vacuum chamber ( 2 ), wherein n≧2, and wherein n is the number of cathodes; 1.3 at least three anodes ( 28 - 32 ) inside said vacuum chamber ( 2 ); 1.4 a single connecting line ( 63 ) to which each of said anodes ( 28 - 32 ) is electrically connected; 1.5 a resistor ( 34 ) being connected to said connecting line ( 63 ) at its one end and being connected to ground ( 33 ) at its other end, said resistor ( 34 ) having a resistance of at least 2Ω.