Single-sided ablative worm optical disk with multilayer protective coating

A single-sided ablative write-once optical disk having a single data layer for use in a laser-based optical disk drive comprising:

• a radiation-transparent substrate having a first surface that supports the single data layer and an opposite surface that forms a first outer face of the disk and from which laser radiation enters the substrate;
• a fluorinated hydrocarbon film formed on the first surface of the substrate;
• a tellurium-based active film formed directly on the fluorinated hydrocarbon film, the active film flowing to form holes in the presence of incident radiation from the laser;
• a silicone elastomer deformable layer having a hardness, as measured on the Shore A scale, in the range of approximately 25-90, the deformable layer being formed directly on and in contact with the active film, the 14 deformable layer permitting flow of the active film in the presence of incident radiation from the laser and;
• a protective overcoat comprising a layer of a spin-coated ultraviolet-radiation-curable acrylate formed directly on the deformable layer, the protective overcoat forming the second outer face of the disk opposite said first outer face.

A single-sided ablative write-once optical disk having a single data layer for use in a laser-based optical disk drive comprising:

• a radiation-transparent substrate having a first surface that supports the single data layer and an opposite surface that forms a first outer face of the disk and from which laser radiation enters the substrate;
• a fluorinated hydrocarbon film formed on the first surface of the substrate;
• a tellurium-based active film formed on the fluorinated hydrocarbon film, the active film flowing to form holes in the presence of incident radiation from the laser;
• a deformable layer of material selected from the group consisting of fluorinated hydrocarbons and silicone elastomers formed directly on and in contact with the active film, the deformable layer permitting flow of the active film in the presence of incident radiation from the laser;
• a metal layer formed directly on the deformable layer;
• and
• a protective overcoat formed on the metal layer, the protective overcoat forming the second outer face of the disk opposite said first outer face.

A single-sided ablative write-once optical disk having a single data layer for use in a laser-based optical disk drive comprising:

• a radiation-transparent substrate having a first surface that supports the single data layer and an opposite surface that forms a first outer face of the disk and from which laser radiation enters the substrate;
• a fluorinated hydrocarbon film formed on the first surface of the substrate;
• a tellurium-based active film formed directly on the fluorinated hydrocarbon film, the active film flowing to form holes in the presence of incident radiation from the laser;
• a deformable layer of material having a hardness, as measured on the Shore A scale, of less than 100 and selected from the group consisting of silicone elastomers, polyacrylates, ethylene propylenes, polyurethanes and fluorocarbons, the deformable layer being formed directly on and in contact with the active film and permitting flow of the active film in the presence of incident radiation from the laser;
• and
• a protective overcoat comprising an imprintable layer formed on the deformable layer, the label forming the second outer face of the disk opposite said first outer face.

A single-sided ablative write-once optical disk having a single data layer for use in a laser-based optical disk drive comprising:

• a radiation-transparent substrate having a first surface that supports the single data layer and an opposite surface that forms a first outer face of the disk and from which laser radiation enters the substrate;
• a fluorinated hydrocarbon film formed on the first surface of the substrate;
• a tellurium-based active film formed directly on the fluorinated hydrocarbon film, the active film flowing to form holes in the presence of incident radiation from the laser;
• a deformable layer of material having a hardness, as measured on the Shore A scale, of less than 100 and selected from the group consisting of silicone elastomers, polyacrylates, ethylene propylenes, polyurethanes and fluorocarbons, the deformable layer being formed directly on and in contact with the active film and permitting flow of the active film in the presence of incident radiation from the laser;
• and
• a protective overcoat comprising a layer of an ultraviolet-radiation curable acrylate and a plastic label bonded to the acrylate layer, the label forming the second outer face of the disk opposite said first outer face.