Patent ID: 7596077
Filing Date: 2009-09-29
Classification: G11B

Abstract:
1. An optical disc comprising: a disc substrate having a recording layer at a first surface side for storing information; and one or more layers formed over the recording layer such that for each sequential layer formed over the recording layer surface side of the disc substrate, a corresponding sequential layer is formed over the opposite side of the disc substrate having substantially the same film quality and substantially the same film thickness as the corresponding layer formed over the recording layer surface side; wherein at least one of said layers formed over the recording layer surface side is a transparent protection film provided over the recording layer side of the disc substrate; and wherein a film corresponding to the transparent protection film and formed over the opposite side of the disc substrate is a printing label film, wherein the transparent protection film is a synthetic resin sheet which is stuck on one plane of the disc substrate, being adhered through adhesive material, and the printing label film is a synthetic resin sheet which is stuck on the other plane of the disc substrate, also being adhered through adhesive material.