Claims
- 1. An optical data storage medium comprising,
- a laser recordable data storage material disposed on a substrate, and
- a transparent, hydrophobic laminating sheet covering said storage material, the substrate, storage material and laminating sheet having a maximum total thickness not exceeding 40 mils.
- 2. The storage medium of claim 1 further comprising a moisture barrier underlayer beneath said storage material to space apart said substrate and said storage material.
- 3. The storage medium of claim 2 wherein said moisture barrier underlayer comprises a hydrophobic material having a maximum moisture vapor transmission rate of 0.1 grams water vapor/100 square inches surface /mil thickness/24 hours measured at 38.degree. C. and 90% relative humidity.
- 4. The storage medium of claim 3 wherein said hydrophobic material of said underlayer is selected from the group consisting of polytrichlorofluoroethylene, or its copolymers, polyvinylidene chloride, or its copolymers, aluminum foil and vapor deposited aluminum.
- 5. The storage medium of claim 2 wherein said underlayer has a width approximately equal to a width of the substrate.
- 6. The storage medium of claim 2 wherein said underlayer has a width approximately equal to a width of the storage material.
- 7. The storage medium of claim 1 wherein said transparent hydrophobic laminating sheet comprises a material having a maximum moisture vapor transmission rate of 0.1 grams water vapor/100 square inches surface/mil thickness/24 hours measured at 38.degree. C. and 90% relative humidity.
- 8. The storage medium of claim 7 wherein said material of said laminating sheet is selected from the group consisting of polytrichlorofluoroethylene, or its copolymers, and polyvinylidene chloride, or its copolymers.
- 9. The storage medium of claim 1 wherein said substrate comprises polytrichlorofluoroethylene materials.
- 10. The storage medium of claim 1 wherein said substrate is a wallet-size plastic card base.
- 11. The storage medium of claim 1 wherein said laser recordable data storage material comprises a suspension of reflective metal particles in an organic colloid matrix.
- 12. An ultrathin moisture resistant data card comprising,
- a wallet-size plastic card base,
- a strip of laser recordable material disposed on said card base, and
- a transparent hydrophobic laminating sheet covering said strip, the card base, the strip of laser recordable material and the sheet having a maximum total thickness not exceeding 40 mils.
- 13. The data card of claim 12 further comprising a moisture barrier underlayer between said card base and said strip.
- 14. The data card of claim 13 wherein said moisture barrier underlayer comprises a hydrophobic material having a maximum moisture vapor transmission rate of 0.1 grams water vapor /100 square inches surface /mil thickness/ 24 hours measured at 38.degree. C. and 90% relative humidity.
- 15. The data card of claim 14 wherein said hydrophobic material of said underlayer is selected from the group consisting of polytrichlorofluoroethylene copolymers, polyvinylidene copolymers chloride, aluminum foil and vapor deposited aluminum.
- 16. The data card of claim 13 wherein said underlayer has a width approximately equal to a width of the card base.
- 17. The data card of claim 13 wherein said underlayer has a width approximately equal to a width of the strip of laser recordable material.
- 18. The data card of claim 12 wherein said transparent hydrophobic laminating sheet comprises a material having a maximum moisture vapor, transmission rate of 0.1 grams water vapor /100 square inches surface/mil thicknes/24 hours measured at 38.degree. C. and 90% relative humidity.
- 19. The data card of claim 18 wherein said material of said laminating sheet is selected from the group consisting of polytrichlorofluoroethylene copolymers and polyvinylidene chloride copolymers.
- 20. The data card of claim 12 wherein said card base comprises polytrichlorofluoroethylene copolymer material.
- 21. The data card of claim 12 wherein said strip of laser recordable material comprises a suspension of reflective metal particles in an organic colloid matrix.
- 22. An optical data storage medium comprising,
- a plastic, wallet-size base,
- a strip of laser recordable material disposed on said base,
- a transparent, hydrophobic laminating sheet covering said laser recordable material, said laminating sheet having a maximum moisture vapor transmission rate of 0.1 grams water vapor/100 square inches surface/mil thickness/24 hours measured at 38.degree. C. and 90% relative humidity, and
- a moisture barrier underlayer beneath said laser recordable material to space apart said base and said laser recordable material, said moisture barrier having a maximum moisture vapor transmission rate of 0.1 grams water vapor/100 square inches surface/mil thickness/24 hours measured at 38.degree. C. and 90% relative humidity, said laser recordable material, said base, said laminating sheet and said moisture barrier underlayer having an aggregate thickness of less than 41 mils.
- 23. The storage medium of claim 22 wherein said underlayer is selected from the group consisting of polytrichlorofluoroethylene, or its copolymers, polyvinylidene chloride, or its copolymers, aluminum foil and vapor deposited aluminum.
- 24. The storage medium of claim 22 wherein said material of said laminating sheet is selected from the group consisting of polytrichlorofluoroethylene, or its copolymers, and polyvinylidene chloride, or its copolymers.
- 25. The storage medium of claim 22 wherein said strip of laser recordable material comprises a suspension of reflective metal particles in an organic colloid matrix.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 831,652 filed Feb. 20, 1986, now abandoned.
US Referenced Citations (15)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
831652 |
Feb 1986 |
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