Unit and disc having a relatively rough surface and method of pr

Details Unit and disc having a relatively rough surface and method of pr Unit and disc having a relatively rough surface and method of pr

1988-12-28

1991-07-09

Trafton, David

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369275003, 369275004, 369284, 3461351, 346 76L, G11B 724, G11B 726

Patent

active

050311727

ABSTRACT:
An optical recording disc comprising a resin layer of resin material formed on a relatively rough surface of each transparent disc substrates, the resin material having approximately the same refractive index of light as the refractive index of the transparent disc substrate, and a recording layer formed on each of said resin layers. Accordingly, the optical recording disc enables a decrease in production costs and to write and read an information signal into and from the recording layer at an improved signal to noise ratio as compared to a conventional optical recording disc.

REFERENCES:
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patent: 4272574 (1981-06-01), Lippits et al.
patent: 4318112 (1982-03-01), Kivits et al.
patent: 4389719 (1983-06-01), Van de Donk et al.
patent: 4423427 (1983-12-01), Kaiser
patent: 4584259 (1986-04-01), Mayer et al.
patent: 4614705 (1986-09-01), Umehara
patent: 4619804 (1986-10-01), Leonard et al.
"Glass Handbook" Published in Japan on 9/30/75 and the English translation attached therewith (pp. 1-5).
"Toray Silicone" Silane Coupling Agent, published in Japan on Dec. 21, 1982 and the English translation attached therewith (pp. 1-6).

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