Claims
- 1. An asymmetric optical storage medium comprising a layer, which improves directional stability in said medium.
- 2. The optical storage medium of claim 1, wherein said layer is a high modulus layer.
- 3. The optical storage medium of claim 2, wherein said high modulus layer comprises a material that can be cured using ultra-violet light.
- 4. The optical storage medium of claim 3, wherein said material comprises at least one member selected from the group consisting of an acrylate, an epoxy, a silicone-acrylate, a urethane, and any combination thereof.
- 5. The optical storage medium of claim 2, wherein said high modulus layer comprises a material that can be thermally cured.
- 6. The optical storage medium of claim 5, wherein said material comprises at least one member selected from the group consisting of a silicone hardcoat, silica with hydrolizable silanes, an epoxy, a urethane, an imide, a siloxane and any combination thereof.
- 7. The optical storage medium of claim 4, wherein said acrylate is at least one member selected from the group consisting of a poly-methylmethacrylate, a methyl methacrylate-polyimide copolymer, a methyl methacrylate-silicone copolymer, and any combination thereof.
- 8. The optical storage medium of claim 2, wherein said high modulus layer is in direct contact with a data layer.
- 9. The optical storage medium of claim 2, wherein said high modulus layer is in direct contact with a film layer.
- 10. The optical storage medium of claim 2, wherein the thickness of said high modulus layer is between about 0.01 micrometers (μm) and about 50 micrometers (μm).
- 11. The optical storage medium of claim 2, wherein the said high modulus layer has a modulus that is greater or equal to the modulus of the substrate.
- 12. An asymmetric optical storage medium comprising the following layers:
at least one substrate layer; at least one data layer which is in direct contact with said substrate layer; at least one high modulus layer which in direct contact with said data layer; and at least one thin film layer which is in direct contact with said high modulus layer.
- 13. The optical storage medium of claim 12, wherein said substrate layer is a polymeric material comprising at least one member selected from the group consisting of a thermoplastic, a thermoset, and any combination thereof.
- 14. The optical storage medium of claim 13, wherein said thermoplastic is one member selected from the group consisting of a polyester, a polycarbonate, a polystyrene, a polymethylmethacrylate, a polyketone, a polyamide, an aromatic polyether, a polyether-sulfone, a polyether-imide, a polyether ketone, a polyphenylene ether, a polyphenylene sulfide, and any combinations thereof.
- 15. The optical storage medium of claim 12, wherein said data layer comprises at least one member selected from the group consisting of a thermoplastic, a thermoset, and any combination thereof.
- 16. The optical storage medium of claim 12, wherein said high modulus layer comprises at least one member selected from the group consisting of a thermoplastic, a thermoset, and any combination thereof.
- 17. The optical storage medium of claim 12, wherein said thin film layer comprises at least one member selected from the group consisting of a homopolymer, a copolymer, a thermoplastic, a thermoset, and any mixtures thereof.
- 18. The optical storage medium of claim 17, wherein said thermoset is spin coated.
- 19. A method for decreasing the tilt of an asymmetric optical storage medium, said method comprising an addition step wherein a high modulus layer is added to an optical storage medium so that the directional stability of said medium is increased.
- 20. The method of claim 19, wherein said optical storage medium comprises:
at least one substrate layer; at least one data layer which is in direct contact with said substrate layer; at least one high modulus layer which in direct contact with said data layer; and at least one thin film layer which is in direct contact with said high modulus layer.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to and the benefit of the filing date of U.S. Provisional application No. 60/316,534, filed Aug. 31, 2001 and entitled STORAGE MEDIUM FOR DATA.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60316534 |
Aug 2001 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09683500 |
Jan 2002 |
US |
Child |
10417718 |
Apr 2003 |
US |