Accession Number : ADD014788

Title :   Immediate Write, Read, and Erase Optical Storage Medium and Method of Marking and Erasing.

Descriptive Note : Patent, Filed 17 Oct 89, patented 4 Dec 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Sonnenschein, Mark F ; Roland, Charles M

Report Date : 04 Dec 1990

Pagination or Media Count : 9

Abstract : An optical data storage medium comprises a substrate layer, a recording medium and an optional protective layer. The substrate layer supports the recording medium. The recording medium comprises a polymer having stable amorphous and crystalline states under human operating conditions which states have different optical properties. The recording medium is optionally covered and protected by a protective layer. The substrate, recording medium and protective layer can be formed from the same or different polymers. The data is stored by exposing the recording medium to patterned infra-red radiation. The radiation can be patterned by a mask, movement of the radiation beam or by other means to imprint the data on the recording medium.

Descriptors :   INFRARED RADIATION, LAYERS, MARKERS, OPTICAL DATA, OPTICAL PROPERTIES, OPTICAL STORAGE, OPTICS, POLYMERS, RADIATION, RECORDING SYSTEMS, SUBSTRATES, SUPPORTS

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE