Optical information carrier having interconnected buffer spaces

Details Optical information carrier having interconnected buffer spaces Optical information carrier having interconnected buffer spaces

1989-07-03

1991-09-10

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369275003, 369275004, 369286, 3461351, G11B 724

Patent

active

050480065

ABSTRACT:
Optical information carrier comprising an optically transparent layer and a reflective layer adjacent to each other, and the interface between the layers comprises an optically readable information structure containing alternate areas with such different properties that a scanning light beam is modulated in correspondence with the information present in the structure. In the interface between the optically transparent layer, and the surface of the reflective layer, multiple gas-filled interconnected buffer spaces are provided at positions distributed over the interface, so as to provide for vapor pressure equalization across the carrier structure to maintain its flat shape.

REFERENCES:
patent: 4480302 (1984-10-01), Kalk et al.
patent: 4547876 (1985-10-01), Ettenberg

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