Data storage media

Abstract

The data storage media comprises, in a preferred embodiment, a homogenous or non-homogenous plastic substrate that can be formed in situ with the desired surface features disposed thereon on one or both sides, a data storage layer such as a magneto-optic material also on one or both sides, and an optional protective, dielectric, and/or reflective layers. The substrate can have a substantially homogenous, tapered, concave, or convex geometry, with various types and geometries of reinforcement employed to increase stiffness without adversely effecting surface integrity and smoothness.

1 . A storage media for data, said media comprising: 
 a substrate;    at least one plastic film; and    at least one data layer disposed on said plastic film;    wherein said data layer can be at least partly read from, written to, or a combination thereof by at least one energy field; and    wherein said energy field comprises at least one of an electric field, a magnetic field, and an optical field.    
     
     
         2 . The storage media as in  claim 1 , wherein said rigid substrate has a Young's modulus of at least about 7 GPa.  
     
     
         3 . The storage media as in  claim 2 , wherein said Young's modulus is at least about 70 GPa.  
     
     
         4 . The storage media as in  claim 3 , wherein said Young's modulus is at least about 200 GPa.  
     
     
         5 . The storage media as in  claim 1 , wherein said substrate comprises at least one of metal, glass, ceramic, reinforced plastic, or combinations comprising at least one of the foregoing.  
     
     
         6 . The storage media as in  claim 1 , wherein said plastic film comprises embossed surface features.  
     
     
         7 . The storage media as in  claim 1 , wherein said plastic film comprises embossed surface features selected from the group consisting of pits, grooves, edge features, asperities, and combinations comprising at least one of the foregoing.  
     
     
         8 . The storage media as in  claim 1 , wherein said rigid substrate comprises a glass substrate.  
     
     
         9 . The storage media as in  claim 1 , wherein the head slap characteristics of the storage media containing the at least one plastic film is substantially equivalent to a second storage media not containing the at least one plastic film.  
     
     
         10 . The storage media as in  claim 1 , wherein said storage media has a data layer with a coercivity of at least about 1,500 oersted.  
     
     
         11 . The storage media as in  claim 1 , wherein said storage media has a data layer with a coercivity of at least about 3,000 oersted.  
     
     
         12 . The storage media as in  claim 1 , comprising at least one spin coated, spray coated, or spin and spray coated plastic film.  
     
     
         13 . The storage media as in  claim 1 , wherein said plastic film comprises a thermoplastic resin with a glass transition temperature of at least 140° C.  
     
     
         14 . The storage media as in  claim 1 , wherein said plastic film comprises at least one thermoplastic resin of the group consisting of polyetherimides, polyetheretherketones, polysulfones, polyethersulfones, polyetherethersulfones, polyphenylene ethers, thermoplastic polyimides, and polycarbonates.  
     
     
         15 . The storage media as in  claim 1 , wherein said plastic film comprises at least one thermoset resin comprising embossed surface features.  
     
     
         16 . The storage media as in  claim 1 , wherein said plastic film comprises at least one thermoset resin, wherein the at least one thermoset resin at least partially cured during a process to emboss surface features onto the at least one thermoset resin.  
     
     
         17 . The storage media as in  claim 1 , wherein said plastic film comprises at least one thermoset resin selected from the group consisting of epoxy, phenolic, alkyds, polyester, polyimide, polyurethane, mineral filled silicone, bis-maleimides, cyanate esters, vinyl, and benzocyclobutene resins.  
     
     
         18 . The storage media as in  claim 1 , wherein said thickness is about 0.82 mm to about 1.25 mm.  
     
     
         19 . A storage media, comprising: 
 a substrate having a top side and a bottom side;    at least one plastic film on each of said top side and said bottom side; and    at least one data layer disposed on at least one of said plastic film on each of said top side and said bottom side; and    wherein said data layer can be at least partly read from, written to, or a combination thereof by at least one energy field; and    wherein said energy field comprises at least one of an electric field, a magnetic field, and an optical field.    
     
     
         20 . A storage media for data, said media comprising: 
 a substrate comprising an areal density greater than about 10 Gbits/in 2  and an axial displacement peak of less than about 500 μ under shock excitation;    at least one plastic film comprising a surface roughness of less than about 10 Å and    at least one data layer disposed on said plastic film;    wherein said data layer can be at least partly read from, written to, or a combination thereof by at least one energy field; and    wherein said energy field comprises at least one of an electric field, a magnetic field, and an optical field.