Method for the manufacture of capacitive electronic discs

Details Method for the manufacture of capacitive electronic discs Method for the manufacture of capacitive electronic discs

1980-09-05

1984-09-11

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Forming sound grooves in records

Die pressing disk type records

425810, 264338, B29D 1700

Patent

active

044709404

ABSTRACT:
Release properties of stampers used in the manufacture of capacitive electronic discs are improved by passivating the molding surface of the stamper with an oxidizing agent.

REFERENCES:
patent: 3962495 (1976-06-01), Feldstein
patent: 4262875 (1981-04-01), Nyman

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