US Patent 7169232 Producing repetitive coatings on a flexible substrate

Apparatus for use in making a device by forming repetitive sequences of coatings on a flexible substrate including defining a path for the flexible substrate; the flexible substrate being disposed about at least a portion of the path; a first deposition source for depositing material located around the path periphery and in cooperative relationship with the surface of the disposed flexible substrate; an actuable structure effective when actuated for moving the flexible substrate around at least more than one revolution around the path; and actuating the actuable structure and the first deposition source so that at least two separate material coatings are provided on the substrate by the deposition source.