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Appeared on: Wednesday, October 17, 2007
DaTARIUS CoverTest Simplifies Stamper Testing For all Optical Media

With DaTARIUS CoverTest technology pre-recorded and recordable BD, HD DVD and DVD stampers can be tested directly after the galvanic process, and achieve high correlation to finished discs.

The CoverTest foil, applied directly to stampers, provides the same conditions as the polycarbonate layer covering the data layer on a disc.

Although it has been possible in the past to test stampers (except for BD), the results have not closely matched the finished disc. This is due to the fact that formally stampers were tested in air (no polycarbonate on the stamper surface).

With CoverTest, stampers can be directly tested to allow the fasted route to optimum performance and therefore give best disc quality - all this before moulding even starts - something that was, until now, not feasible.

In addition, stamper production companies can be certain of stamper quality before shipping them to their customers. The disc maker can then check the stamper quality when received, resolving any quality issues on the stamper before moulding.

The CoverTest foil also acts as protective shield against damage from handling, and can be left in place indefinitely simply removed just prior to use in a mould.

Extensive tests have been performed on HD DVD and BD formats, and the technology and results were showcased during the DaTARIUS Blue Days (12-13 September) and in China during the Replication Expo show (25-27 September).

DaTARIUS will demonstrate the CoverTest technologies live during Oerlikon?s BD Summit in Liechtenstein.


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