Optically readable information disc comprising an envelope of cross- linked synthetic resin

摘要

An optically readable information disc having a carrier body of polycarbonate which on one side has an optically readable information track which is provided in the surface of the carrier body and which is covered with a reflection layer, the disc comprising an envelope of a cross-linked transparent synthetic resin extending as a closed envelope over the information track with reflection layer present on the upper side of the disc, over the edge of the disc and over the lower side of the disc.