Optical recording medium and its production
AssigneeTDK Corporation
InventorsSusumu Haratani, Junji Tominaga
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Abstract
An optical recording medium includes on the surface of a substrate a recording thin film, a thin film of dielectric material and a reflecting thin film in this order, characterized in that said recording thin film contains Ag, M and O or Fe, M and N, wherein M is at least one member selected from the group consisting of Ni, Ti, Co and Cu. The optical recording medium further includes between the substrate and the recording thin film and on the substrate a surface layer having a glass transition point lower than that of the substrate.
Claims8
An optical recording medium comprising on the surface of a substrate a recording thin film, a dielectric thin film and a reflecting thin film in the order mentioned, said recording thin film containing Ag, M and O, wherein M is at least one member selected from the group consisting of Ni, Ti, Co and Cu, and said recording thin film is decomposable to release oxygen by the heat generated from the incidence of recording light to form voids resulting from the pressure of the resulting gas.
An optical recording medium comprising on the surface of a substrate a dielectric thin film, a recording thin film and a reflecting thin film in the order mentioned, wherein said recording thin film containing Ag, M and O, wherein M is at least one member selected from the group consisting of Ni, Ti, Co, and Cu, and said recording thin film is decomposable to release oxygen by the heat generated from the incidence of recording light to form voids resulting from the pressure of the resulting gas.
Dependencies are inferred from the claim text.