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AssigneeOptical Data, Inc.
InventorsMichael A. Lind, W. Eugene Skiens, Clyde D. Feyrer, John W. Swanson
Estimating the term…
An erasable optical data storage medium has an integral recording layer including an expansion zone and a retention zone having different optical and thermal-mechanical properties. A uniform integral layer of dyed polymer material has the dye leached out of the surface region and a second dye diffused into the surface region to create a retention zone. The retention zone has a higher elastic modulus and glass transition temperature than the underlying expansion zone and is adapted to absorb and transmit light which is centered about a different wavelength than the expansion zone. The medium is adapted to be used with a non-ablative and non-vesicular method to create and erase optically detectable deformations in the retention zone.
An erasable optical data storage medium comprising:
A method for constructing an erasable data storage medium comprising:
An erasable data storage medium including a data recording layer of a single integral material having at least two zones therein is constructed by the process of:
Dependencies are inferred from the claim text.