Optically readable information disc and method of...

Details Optically readable information disc and method of... Optically readable information disc and method of...

G - Physics

11

B

352/32.4, 204/91

G11B 7/00 (2006.01) C08J 7/18 (2006.01) G11B 7/26 (2006.01) G11B 23/00 (2006.01) G11B 25/04 (2006.01)

Patent

CA 1184298

ABSTRACT: An optically readable information disc having a substrate plate which on at least one side comprises an information layer of a lacquer cured by irradiation for example by ultraviolent light, said layer carrying an optically readable information track in which the lacquer is a lacquer which, in addition to 0.1-5% by weight of auciliary substances, comprises only one radiation-cross- linkable compound in a quantity by weight from 95-99.9% selected from the group consisting of alkaneqiol diacryla- tes, alkenediol dimethacrylates, alkene glycol diacrylates and alkeneglycol dimethacrylates having the acrylate or methacrylate groups in an end position, of which the al- kane moiety and alkene moiety comprise from 4 to 12 carbon atoms, and in which the cured lacquer apart from the auxi- liary substances comprises no or substantially no extract- able material.

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