High density information records made of conductive resin compos

Details High density information records made of conductive resin compos High density information records made of conductive resin compos

1984-12-07

1987-01-27

Thomas, Alexander S.

Dynamic information storage or retrieval

Storage medium structure

Specified material

523174, 428 65, 346134, G11B 2300

Patent

active

046399089

ABSTRACT:
High density information records made of vinyl chloride resin compositions which comprise conductive powder and inorganic compounds in the form of powder having an antacidic action and a predetermined average size. By this, dropout defects in the information record can be suppressed to a significant extent. The inorganic compounds are selected from calcium hydroxide, basic aluminum magnesium carbonate hydrate and hydrotalcite.

REFERENCES:
patent: 3351577 (1967-11-01), Krumm

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