Recording Mechanism of Overcoated Metallized Dye Layers on Polycarbonate Substrates : Media :

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Description

The recording mechanism of a so-called CD-Recordable is reported; the disc consists of a pregrooved polycarbonate substrate, a dye, a metal reflector and an overcoat. After recording, bumps on the pregrooved substrate and pits at the dye/metal interface are observed. A method to determine the complex refractive index of a dye is explained and it will be shown how to obtain both a high reflection and a high modulation. From optical and thermal calculations and from recording experiments it is shown that two threshold temperatures are involved, associated with the softening of polycarbonate at 170℃ and with a transition of the dye at 265℃.

Journal

  • JJAP series

    JJAP series 6 99-108, 1992-03-31

    Japanese Journal of Applied Physics

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