Erasable optical recording media
AssigneeSRI International
InventorDean B. Parkinson, deceased
Life of this patent
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Abstract
An optical recording structure comprises a thermally stable substrate and a polymeric layer deposited on the substrate comprised of a poly(ester-amide). Laser beams are directed at the deposited polymeric layer to record or erase information. The recording structure has an excellent dimensional and mechanical stability on storage, readily and easily records information, and has an ability to be easily and completely erased.
Claims16
An optical recording structure, for use with a recording laser providing light of a predetermined frequency, comprising a thermally stable substrate having coated thereon, a stable and erasable layer of a polymer recording medium comprising a poly(ester-amide) obtained by the reaction of a bis-oxazoline with a diacid, and a laser-sensitive dye material which is absorptive at the frequency of the recording laser.
A method of fabricating an optical recording structure comprising, depositing a thin polymer layer on a substrate and irradiating the thin polymer layer with a beam of light emitted from a laser to form a pattern of pits in the thin polymer layer in accordance with desired information, the thin polymer layer being comprised of a poly(ester-amide) obtained by the reaction of a bis-oxazoline with a diacid, and a laser-sensitive dye material which is absorptive at the frequency of the laser.
Dependencies are inferred from the claim text.