Multilayer recording medium for optical information

Details Multilayer recording medium for optical information Multilayer recording medium for optical information

G - Physics

11

B

352/32.4

G11B 7/24 (2006.01) G11B 7/248 (2006.01) G11B 7/257 (2006.01) G11B 7/26 (2006.01)

Patent

CA 1318024

Abstract of the Disclosure The invention describes a multilayer recording medium for optical information for use in a single recording operation and the process for its production. The multilayer recording medium essentially comprises a support and a layer comprising an unsubstituted naphthalocyanine dye. A binder layer is disposed between the support and the dye layer or the dye layer carries a binder layer which, in turn, is coated with a dye layer. Moreover, the invention describes composite systems, in particular, adhesive-bonded systems constructed from these multilayer recording media. As compared to recording media of the prior art, the media and composite systems according to the present invention exhibit a high reflectivity and require a lower write-pulse energy, while maintaining a particular contrast ratio.

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