FORMATION METHOD FOR METALLIC STAMPER AND METALLIC STAMPER AND MANUFACTURE METHOD FOR OPTICAL DISK SUBSTRATE WITH THE USE OF THE STAMPER AND OPTICAL DISK FABRICATED BY THE MANUFACTURE METHOD

摘要

The present invention can be a large capacity optical disc by forming fine grooves and the pits of the optical disc substrate with high accuracy and provides a method for producing an optical disk substrate, which can reduce the noise level.; Forming a film (2) of an organic material over the mastering disk (原 盤) substrate 1 that to form a pattern on the organic material film 2 on the etching mask (etching mask), a mask material 3 which is do. After called the organic material film 2 Et to prepare a master disc ring (10) by removing the mask material.; Wherein a mastering disc after forming a metal film (4a) to (10) form a metal film (4a) metal main body portion (4b) over integrally to the next, a metal film (4a) and a metal body portion (4b) by peeling the metal parts from the mastering green sheet 10 to form a metal stamper 4.