Optically readable information disc

Details Optically readable information disc Optically readable information disc

1978-07-20

1981-06-09

Silverman, Stanley S.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

346 76L, 346 77R, 3461351, 346137, 3581285, 428172, 428412, 428419, 428522, 428413, G11B 724

Patent

active

042725747

ABSTRACT:
The invention relates to an information disc having a laminated structure which can be read optically. The information disc comprises a transparent substrate which is preferably manufactured from a synthetic resin, for example plexiglass, having thereon a radiation-cured lacquer layer in which the information track is present. The lacquer layer used comprises a radiation-cross linkable protic compound which after curing is aprotic. The lacquer layer preferably comprises a polythiol compound as well as a polyene compound in an equivalent ratio of 1:1.

REFERENCES:
patent: 4084020 (1978-04-01), Mathias et al.
patent: 4126726 (1978-11-01), Soeding
patent: 4188433 (1980-02-01), van den Broek et al.

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