ETCHED MOLD SURFACE FOR USE IN MAKING LIGHT- READABLE DISCS

摘要

ETCHED MOLD SURFACE FOR USEIN MAKING LIGHT-READABLE DISCSAbstract of the DisclosureMethods and apparatus for making optical discs (e. g., for use in digital versatile discs ("DVDs")) are provided. An optical disc made inaccordance with this invention includes at least oneroughened surface portion to mask any manufacturing irregularities and thereby improve the appearance of the disc and, if the disc is used in a DVD, then also the DVD. The method includes roughening a section of amold in contact with molten plastic, molding an optical disc with that mold so that at least one side of theoptical disc has a roughened surface portion, and if the disc is used in a DVD, securing the disc to anotherdisc with adhesive to form a DVD.( Figure 1 )