Coated media for optical recording, with soft/hard overcoat

Details Coated media for optical recording, with soft/hard overcoat Coated media for optical recording, with soft/hard overcoat

1982-12-17

1991-02-19

McElheny, Jr., Donald

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 724

Patent

active

049950282

ABSTRACT:
For an optical data storage system employing a data-modulated writing laser beam, optical media are described which include a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer and an optical absorber (recording) layer overlying the spacer layer, -- plus an overcoat structure including a "soft pad" layer (e.g., fluoropolymer) on and/or under the absorber plus a "hard" overcoat layer (e.g., radiation-cured acrylic)laid over the "soft pad" as an outer protective overcoat.

REFERENCES:
patent: 4069487 (1978-01-01), Kasai et al.
patent: 4101907 (1978-07-01), Bell et al.
patent: 4264986 (1981-04-01), Willis
patent: 4300227 (1981-11-01), Bell
patent: 4335173 (1982-06-01), Caraballo
patent: 4340655 (1982-07-01), Hollister et al.
patent: 4370391 (1983-01-01), Mori et al.
patent: 4410581 (1983-10-01), Nam

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