WERKWIJZE VOOR HET VERVAARDIGEN VAN EEN SCHIJFVORMIGE REGISTRATIEDRAGER MET EEN OPTISCH UITLEESBARE INFORMATIESTRUCTUUR.

摘要

A disc-shaped information carrier for high-density storage, in particular for video signals, has the information provided on both sides of the carrier and stored in the form of a beam-reflecting surface structure which is covered by a layer of translucent material. A disc-shaped base element is formed by injection molding, pressing, stamping or the like to exhibit a surface structure corresponding to the information to be stored on both sides thereof. Each side has a thin metallic coating applied thereto which maintains the same surface profile and the information structure is protected on each side with a layer of transparent material.