Multilayered optical information-recording media laminated with

Details Multilayered optical information-recording media laminated with Multilayered optical information-recording media laminated with

1996-03-21

2000-11-28

Miller, Brian E.

Dynamic information storage or retrieval

Storage medium structure

Layered

G11B 566

Patent

active

061544426

ABSTRACT:
This invention provides an optical disk effective in both precision and productivity, and to a process for the manufacture thereof. The optical disk allows reading of the information recorded on each information-recording surface of the two or more information-recording surfaces by varying the focal position of a playback laser beam incident on and passing through said light transmitting substrate; and the optical disk is provided with a transparent layer that is laminated onto the light transmitting substrate and is constituted of a thermoplastic resin sheet of uniform thickness and the transparent layer has an information-recording surface other than the surface of said light transmitting substrate formed thereon.

REFERENCES:
patent: 4745029 (1988-05-01), Kambour
patent: 5118771 (1992-06-01), Inoue et al.
patent: 5328816 (1994-07-01), Tamura et al.
patent: 5485452 (1996-01-01), Maeda
patent: 5572492 (1996-11-01), Ogawa
patent: 5618638 (1997-04-01), Taki
patent: 5673251 (1997-09-01), Suzuki et al.

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