Patent ID: 7950347

Claim:
A device for holding and rotating a flat substrate ( 1 ), in particular for treating the exposed surface of the substrate by spray coating, comprising a supporting means ( 2 ) which can be rotated around an axis (A) and serves for placing and holding the substrate ( 1 ) on a supporting surface ( 21 ) extending perpendicularly with respect to the axis (A), wherein the diameter of the supporting surface ( 21 ) is smaller than that of the substrate, a rotating means for rotating the supporting means ( 2 ), a fluid supply arrangement ( 4 ) for supplying a fluid onto the part of the side ( 11 ) of the substrate ( 1 ) facing the supporting surface ( 21 ) and radially projecting outwardly from the supporting surface ( 21 ), and a heating means ( 3 ) for heating the supporting means ( 2 ), wherein the heating means ( 3 ) and the supporting means ( 2 ) are arranged coaxially.