Method for plasma coating a caul

Use of a device (100..103) for plasma coating a caul plate (2), the device comprising a vacuum chamber (3) and an electrode (400..409) disposed therein, which during operation is oriented substantially parallel to the caul plate (2) and said front beside coated, wherein the electrode (400..409) is segmented and each of the electrode segments (500..512) It has a connection (6) for an own power source (700..702).