Method for making optically readable media containing...

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

G - Physics

03

H

88/0.14

G03H 1/04 (2006.01) B29C 35/08 (2006.01) B29C 59/02 (2006.01) G03F 7/00 (2006.01) G03F 7/20 (2006.01) G03H 1/02 (2006.01) B29C 33/60 (2006.01) B29C 33/62 (2006.01)

Patent

CA 2034542

- 29 - Title METHOD FOR MAKING OPTICALLY READABLE MEDIA CONTAINING EMBOSSED INFORMATION Abstract A method for making an optical image element having a high aspect ratio relief hologram comprising the sequential steps of (a) applying a dry photohardenable film to a surface of a transparent dimensionally stable substrate; (b) embossing the exposed surface of the photohardenable film with the holographic image by applying thereto under pressure a stamper containing a reverse relief image of the hologram having an aspect ratio of at least 3:1; (c) passing actinic radiation through the transparent substrate and the photohardenable film to effect hardening of the photohardenable film while it is in contact with the stamper; and (d) separating the stamper die from the embossed photohardened film; IM-0042

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