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AssigneeRicoh Company, Ltd.
InventorsHajime Yuzurihara, Hiroshi Deguchi, Michiaki Shinotsuka, Takashi Shibaguchi, Makoto Harigaya, Mikio Kinoshita, Yoshiyuki Kageyama, Michiharu Abe
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A phase-change optical recording medium has a substrate, and a lower heat-resistant protective layer, a recording layer capable of recording and erasing information by utilizing changes in the phase of a phase-change recording material in the recording layer, an upper heat-resistant protective layer and a light reflecting and heat dissipating layer, which are successively overlaid on the substrate in this order, the recording material including Ag, In, Sb and Te as the main elements, at least one additional element selected from the group (1) consisting of B, C, N, Al, Si and P, and at least one additional element selected from the group (2) consisting of halogen atoms and alkali metal elements.
A phase-change optical recording medium comprising a substrate, and a lower heat-resistant protective layer, a recording layer capable of recording and erasing information by utilizing changes in the phase of a phase-change recording material in said recording layer, an upper heat-resistant protective layer and a light reflecting and heat dissipating layer, which are successively overlaid on said substrate in this order, said recording material comprising:
Dependencies are inferred from the claim text.