High density information records made of conductive resin compos

Compositions – Electrically conductive or emissive compositions – Elemental carbon containing

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369288, 358342, 523174, H01B 106

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045487391

ABSTRACT:
A high density information record of the electrostatic capacitance type comprising a record substrate on which signal information is recorded as geometric variations. The record substrate is made of a conductive resin composition comprising a vinyl chloride resin and a conductive powder. The vinyl chloride resin is obtained by suspension polymerization of starting vinyl chloride monomer in an aqueous solution of a water-soluble polymer suspension stabilizer from which insoluble organic matters with sizes over 10 .mu.m have been removed.

REFERENCES:
patent: 4267084 (1981-05-01), Mizutani et al.
patent: 4280941 (1981-07-01), Datta et al.
patent: 4351747 (1982-09-01), Miyamoto et al.
patent: 4412941 (1983-11-01), Probst et al.

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