摘要:
An element comprising an assembly of two parallel substrate plates (9, 10) made from a transparent synthetic resin and each bearing on their facing sides a recording layer (11,12) which comprises a guide track in the form of a spiral-like groove, and a foil (19) of synthetic resin which with both major surfaces engages or substantially engages the ridges (15, 16) of the recording layers present between the groove turns.
摘要:
A laminated product comprising substrate (7) and a thin layer (11, 12) of a dielectric compound formed from the oxide or the suboxide of gallium antimonide or indium antimonide, an optical information carrier containing such a tin layer, whereby said thin layer, dependent upon the oxygen content, may function as a recording layer 11 or as a transparent distance layer 12, as well as the suboxide of gallium antimonide or indium antimonide used in the laminated product.