Method for electroforming a replica on a record matrix

Details Method for electroforming a replica on a record matrix Method for electroforming a replica on a record matrix

1981-09-30

1982-11-02

Tufariello, T.

Chemistry: electrical and wave energy

Processes and products

C25D 120

Patent

active

043572162

ABSTRACT:
An improved method is provided for the manufacture of records, molds, and stampers in which the matrix on which the molds and stampers are electroformed is subjected to demagnetization prior to electroforming to prevent tramp metal particles from adhering to the surface of the matrix and thereby causing microdefects in the electroformed parts.

REFERENCES:
patent: 2075646 (1937-03-01), Hewitt
patent: 2530842 (1950-11-01), Ruggieri

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