Video disc and method of making the same

Abstract From the Canadian patent

The present invention relates to a process for producing replicas from a master matrix and to be replicas produced from the process. Prior attempts at providing video information have generally involved the use of video tape recorders of various sorts as well as photographic techniques. Still other approaches have attempted to utilize thermoplastic records or the surface alteration of a thin metallic film. These have resulted however, in high costs which would be too expensive for playback in an inexpensive home instrument. The present invention overcomes these deficiencies of the prior art by providing an improved process for producing a disc-shaped record and the record itself. The record …