Optically readable information disk, method of manufacturing...

Details Optically readable information disk, method of manufacturing... Optically readable information disk, method of manufacturing...

G - Physics

11

B

356/199, 352/32.

G11B 7/24 (2006.01) B29C 35/08 (2006.01) B29C 43/02 (2006.01) B29C 43/54 (2006.01) B29C 45/26 (2006.01) B29D 17/00 (2006.01) G03F 7/00 (2006.01) G11B 7/26 (2006.01)

Patent

CA 1143476

26-9-1979 1 PHN 9463 ABSTRACT "Optically readable information disk, method of manufact- uring same, and device for performing the method". The invention relates to an optically read- able information disk, a method of manufacturing same, as well as a device for carrying out the method, in which the information disk which comprises an optically read- able information track of information areas situated at a higher and a lower level, is manufactured entirely from a radiation-cured layer of a lacquer containing oligomeric acrylates or methacrylates which on an average per molecule comprise between one and four acrylate groups or methacrylate groups, has a viscosity of 1,000 - 15,000 eP and comprises a photoinitiator in a concentration of 0.1 to 0.5 % by weight. Suitable lacquers comprise notably 1,1'-isopropylene-bis(p-phenoxyethylmethacrylate) or 1,1'-isopropylene-bis(p-phenoxyethylacrylate).

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