| 摘要 |
PURPOSE: To obtain a stamper for molding an optical disc which is free from the degradation of the shape of an optical disc substrate molded, if the stamper is used for a long time. CONSTITUTION: The rear side of an information recording face has an uneven surface with a degree of roughness of 0.05 to 0.7S, and at least, the top of, an uneven part of the uneven surface is polished like a mirror plane. In addition, for the manufacture of this stamper, the rear side of the information recording face is polished, and a finer polishing agent used for polishing is used for a succeeding step. |
