Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1988-02-22
1989-10-31
Canney, Vincent P.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
428 64, 430945, G11B 700
Patent
active
048782122
ABSTRACT:
Provided is an archival recording medium and a method for recording information on same. The recording medium comprises a microporous polymeric layer and an energy-absorbing material, e.g., a layer of an energy-absorbing material such as a metal or dye/polymer layer deposited on the microporous layer. If desired, further dimensional stability and mechanical strength can be provided by a thermally stable substrate or by tensioning the medium within a rigid frame. Information is recorded by the energy-absorbing material heating up in localized irradiated regions and causing the controlled collapse of the microporous structure in the microporous polymer layer. The collapsed portions of the structure constitute the information which can then be read either by reflectance or transmission.
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Canney Vincent P.
Hoechst Celanese Corporation
Nguyen Hoa T.
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