High density record including carbon black particles purified by

Details High density record including carbon black particles purified by High density record including carbon black particles purified by

1984-05-18

1988-10-11

Cardillo, Raymond F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

369276, 369288, C25F 500

Patent

active

047769351

ABSTRACT:
A high density information record of the electrostatic capacitance type which comprises a record substrate on which signal information is recorded as geometric variations. The substrate is made of a vinyl chloride resin, and carbon black which is purified by electrolysis to remove impurities therefrom.

REFERENCES:
patent: 4234398 (1980-11-01), Yamamato
patent: 4389288 (1983-07-01), Vaughan
patent: 4401533 (1983-08-01), Saito et al.
patent: 4472295 (1984-09-01), Fox et al.
patent: 4472336 (1984-09-01), Enoki et al.
The Condensed Chemical Dictionary, p. 826.
Hackh's Chemical Dictionary, p. 647.
Handbook of Chemistry and Physics, p. D-103.

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