Optical disk having an SiO.sub.2 coating

Details Optical disk having an SiO.sub.2 coating Optical disk having an SiO.sub.2 coating

1993-01-28

1995-09-12

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369286, G11B 724

Patent

active

054503809

ABSTRACT:
An optical disk adapted to resist moisture absorption, warping and static charge is disclosed. The disk includes an SiO.sub.2 film coating over at least a portion of a disk substrate. Additionally, an optical disk having a magnetic film protected by a fluorocarbon polymer is disclosed. Either of such disks can be used individually or, alternatively, they can be used in a laminated structure having two disks laminated in a face-to-face relationship. The laminated structure can be covered with SiO.sub.2 film.

REFERENCES:
patent: 4954379 (1990-09-01), Nishida et al.
patent: 5013594 (1991-05-01), Mizumura et al.
patent: 5031172 (1991-07-01), Umeda et al.
patent: 5197049 (1993-03-01), Wehrenberg
patent: 5270987 (1993-12-01), Kaku et al.

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