Method for making optically readable media containing...

Details Method for making optically readable media containing... Method for making optically readable media containing...

G - Physics

11

B

42/2

G11B 7/24 (2006.01) B32B 3/02 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2020180

A method for making an optically readable medium containing a relief information track comprising the sequential steps of (a) laminating a dry photohardenable film to a surface of a transparent dimensionally stable substrate; (b) embossing the exposed surface of the photohardenable film with the relief information track by applying thereto under pressure a scamper die containing a reverse relief image of the information track; (c) passing actinic radiation through the transparent substrate and the photohardenable film to effect hardening of the photohardenable film while it is contact with the stamper die; and (d) separating the stamper die from the embossed photohardened film; The embossed film of the medium is made reflective by applying a reflective layer to either the photohardenable film prior to embossing or to the photohardened film subsequent to embossing.

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