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Stamper
 The metal master is transformed by the mirror structure into metal mother after electroforming because
it will be degraded during the injection process. By the same procedure, metal mother is transformed
into the son which has the same structure as the metal father. After the center hole and outer edge is
formed by punch and its back side is well polished, the son then becomes the stamper.
Injection Moulding
 The stamper is placed in the mold and the optic polycarbonate material
is injected into the cavity of the mold. As a result, the transparent substrate
is formed and has identical shape of the stamper's pit and groove.
Coating
 Organic dye is then coated on the polycarbonate substrate by spin coating.
A uniform layer of dye is laid after removing the solvent.
Sputtering
 The material is spread on the information side of the polycarbonate substrate
in accordance with the different DVD standards.
Bonding
 Two sputtered half discs are joined back to back by the bonding machine.
Printing
 After printing the pattern on the face required by the clients, the finest
DVD is complete and ready for information storage.
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