Werkwijze voor het vormen van een metalen stempel, metalen stempel en productiewerkwijze voor substraten van optische schijven onder gebruikmaking van het stempel en optische schijven, vervaardigd met de productiewerkwijze.

摘要

The present invention provides a method for manufacturing optical disk substrates whereby grooves and pits of optical disk substrates are formed highly accurately and finely, so that resulting optical disks can be of large-capacity and reduced in noise level. A coat of an organic material is provided on a substrate which is to be a master, on which a mask material is patterned as an etching mask. After the coat of the organic material is etched, the mask material is removed, whereby a master is obtained. A metallic coat is formed to the master. A metallic main body portion is integrally formed on the metallic coat. A metallic portion comprising the metallic coat and metallic main body portion is separated from the master. A metallic stamper is thus formed.