Radial tilt reduced media
A storage media having a radial deviation of less than or equal to about 1.15 degrees at a radius of 55 mm is disclosed. In one embodiment, the storage media comprises: a plastic substrate, an optical layer and a data storage layer disposed therebetween. A reflective layer is disposed between the data storage layer and the substrate.
1 - 50 . (canceled)
51 . A storage media, comprising:
a plastic substrate having a substrate composition comprising a polyarylene ether and having a substrate thickness;
an optical layer having an optical layer composition different from the substrate composition;
a reflective layer disposed between the optical layer and the substrate;
wherein the storage media has a radial deviation over time of less than or equal to 1.15 degrees at a radius of 55 mm when exposed to a cycle at 25° C. of 50% relative humidity —90% relative humidity —50% relative humidity, and wherein the storage media is capable of storing greater than or equal to about 20 GB of data.
52 . The storage media of claim 51 , wherein the substrate has a side comprising surface features, and wherein the reflective layer is disposed on the side of the substrate comprising the surface features.
53 . The storage media of claim 51 , further comprising a data storage layer disposed between the reflective layer and the optical layer, wherein the data storage layer comprises a material selected from the group consisting of an organic dye and an inorganic phase change compound.
54 . The storage media of claim 51 , wherein a stiffness ratio of the optical layer to the substrate is about 0.5 to about 5 measured in tensile deformation at room temperature.
55 . The storage media of claim 51 , wherein a swell ratio of the optical layer to the substrate is about 0.5 to about 5.0.
56 . The storage media of claim 51 , wherein the optical layer thickness is about 0.2 micrometers to about 120 micrometers.
57 . The storage media of claim 51 , wherein the optical layer composition is selected from the group consisting of polycarbonates, acrylic polymers, epoxies, silicones, and copolymers and combinations comprising at least one of the foregoing optical layer compositions.
58 . The storage media of claim 57 , wherein the optical layer composition comprises poly(alkyl acrylate).
59 . The storage media of claim 57 , wherein the optical layer composition comprises silicones.
60 . The storage media of claim 51 , wherein the substrate composition further comprises polystyrene.
61 . The storage media of claim 60 , wherein the polyarylene ether comprises a polyphenylene ether selected from the group consisting of polyphenylene ether derived from 2,6-dimethylphenol, polyphenylene ether derived from 2,6-dimethylphenol copolymerized with 2,3,6-trimethyiphenol, and reaction products, combinations, and composites comprising at least one of the foregoing polyphenylene ethers.
62 . The storage media of claim 51 , wherein the radial deviation is less than or equal to about 1.0 degree.
63 . The storage media of claim 62 , wherein the radial deviation is less than or equal to about 0.5 degrees.
64 . The storage media of claim 51 , further comprising a dielectric layer disposed between the optical layer and the substrate, wherein the dielectric layer is selected from the group consisting of silicon nitride, aluminum nitride, aluminum oxide, silicon carbide, and combinations comprising at least one of the foregoing dielectric layers.
65 . The storage media of claim 51 , further comprising an adhesive layer disposed between the optical layer and the substrate, wherein the adhesive layer is selected from the group consisting of polyisoprene, styrene butadiene rubber, ethylene propylene rubber, fluoro vinyl methyl siloxane, chlorinated isobutene-isoprene, chloroprene, chlorinated polyethylene, chlorosulfonated polyethylene, butyl acrylate, expanded polystyrene, expanded polyethylene, expanded polypropylene, foamed polyurethane, plasticized polyvinyl chloride, dimethyl silicone polymers, methyl vinyl silicone, polyvinyl acetate, and combinations comprising at least one of the foregoing adhesives.
66 . The storage media of claim 51 , further comprising an adhesive layer disposed between the optical layer and the substrate, wherein the adhesive layer is selected from the group consisting of a UV curable adhesive, a pressure sensitive adhesive, and combinations comprising at least one of the foregoing.
67 . The storage media of claim 51 , further comprising a lubrication layer, wherein the lubrication layer is selected from the group consisting of fluoro oils, and fluoro greases, and combinations comprising at least one of the foregoing.
68 . The storage media of claim 51 , wherein the optical layer composition is selected from the group consisting of ethylene-tetrafluoroethylene copolymers, polyvinyl fluoride, polyvinylidene fluoride, polyvinylidene chloride, and polytetrafluoroethylene, and reaction products, and combinations comprising at least one of the foregoing optical layer compositions.
69 . A storage media, comprising:
a plastic substrate having a substrate composition comprising a polyarylene ether and having a substrate thickness;
an optical layer having an optical layer composition different from the substrate composition; and
wherein the storage media has a radial deviation over time of less than or equal to about 1.15 degrees at a radius of 55 mm when exposed to humidity, a stiffness ratio of the optical layer to the substrate of about 0.5 to about 5 measured in tensile deformation at room temperature, a swell ratio of the optical layer to the substrate of about 0.5 to about 5.0; and
wherein the storage media is capable of storing greater than or equal to about 20 GB of data; and
wherein the storage media is capable of reflecting an energy field.
70 . The storage media of claim 69 , further comprising a reflective layer disposed between the optical layer and the substrate, and wherein the substrate has a side comprising surface features, and wherein the reflective layer is disposed on the side of the substrate comprising the surface features.
71 . The storage media of claim 69 , wherein a stiffness ratio of the optical layer to the substrate is about 0.5 to about 5 measured in tensile deformation at room temperature.
72 . The storage media of claim 69 , wherein a swell ratio of the optical layer to the substrate is about 0.5 to about 5.0.
73 . The storage media of claim 69 , wherein the optical layer thickness is about 0.2 micrometers to about 120 micrometers.
74 . The storage media of claim 69 , wherein the optical layer composition is selected from the group consisting of polycarbonates, acrylic polymers, epoxies, silicones, and copolymers and combinations comprising at least one of the foregoing optical layer compositions.
75 . The storage media of claim 69 , wherein the optical layer composition comprises poly(alkyl acrylate).
76 . The storage media of claim 69 , wherein the optical layer composition comprises silicones.
77 . The storage media of claim 69 , wherein the substrate composition further comprises polystyrene.
78 . The storage media of claim 69 , wherein the polyarylene ether comprises a polyphenylene ether selected from the group consisting of polyphenylene ether derived from 2,6-dimethylphenol, polyphenylene ether derived from 2,6-dimethylphenol copolymerized with 2,3,6-trimethylphenol, and reaction products, combinations, and composites comprising at least one of the foregoing polyphenylene ethers.
79 . The storage media of claim 69 , wherein the radial deviation is less than or equal to about 1.0 degree.
80 . The storage media of claim 79 , wherein the radial deviation is less than or equal to about 0.5 degrees.
81 . The storage media of claim 69 , wherein the optical layer composition is selected from the group consisting of ethylene-tetrafluoroethylene copolymers, polyvinyl fluoride, polyvinylidene fluoride, polyvinylidene chloride, and polytetrafluoroethylene, and reaction products, and combinations comprising at least one of the foregoing optical layer compositions.