Information record with a thick overcoat

Details Information record with a thick overcoat Information record with a thick overcoat

1982-03-31

1984-03-06

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369284, 369288, G11B 724

Patent

active

044358016

ABSTRACT:
The invention is an improved optical recording medium and a method for making same in which the substrate has a raised center and peripheral portions. The sides of the raised portions and the upper surface of a light absorptive layer, which overlies the unraised portion, form a mold which is filled with the overcoat material.

REFERENCES:
patent: 2313851 (1943-03-01), Van Deventer
patent: 2340161 (1944-01-01), Van Deventer
patent: 4023185 (1977-05-01), Bloom et al.
patent: 4074282 (1978-02-01), Balas, Jr. et al.
patent: 4097895 (1978-06-01), Spong
patent: 4101907 (1978-07-01), Bell et al.
patent: 4170616 (1979-10-01), Jebens
patent: 4216501 (1980-08-01), Bell
patent: 4219826 (1980-08-01), Bloom et al.
patent: 4241355 (1980-12-01), Bloom et al.
patent: 4315269 (1982-02-01), Bloom et al.

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