This paper describes optical memory disks which utilize organic dye material for the recording layer. Optical memory disks with cyanine as the organic dye can be fabricated with relative ease by the wet-coating method and are expected to have the possibility of high-density recording. The currently developed dye material exhibits high metallic reflection and absorption capabilities at the laser diode wavelength region. Single-layer-type optical memory disks with the coated dye material were examined. Excellent stability and read–write characteristics have been found satisfactory for practical use.
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