Record matrix preparation

Details Record matrix preparation Record matrix preparation

1980-12-05

1982-12-21

Edmundson, F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 4, 204 5, C25D 110, C25D 200

Patent

active

043648169

ABSTRACT:
An apparatus, for use in an electroplating arrangement, for establishing electrical contact with a metal or metalized cathode plate used in production of a disc record matrix. The apparatus includes an electrically conductive contact member and a clamping means for holding the contact member against a cathode plate supported by the apparatus. The contact member and clamping means are shaped so that electrical contact is established at the periphery only of the cathode plate.

REFERENCES:
patent: 2852463 (1958-09-01), Gutzmer
patent: 3414502 (1968-12-01), Porrata et al.
patent: 4092234 (1978-05-01), Horst et al.

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