Cathode head

Details Cathode head Cathode head

1981-09-14

1983-05-31

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 5, 204292, 204297R, 204DIG7, 204290F, C25D 110, C25D 1706

Patent

active

043859780

ABSTRACT:
An improved cathode head is disclosed for electroforming record matrixes. The cathode head includes a conductive cathode plate which is of approximately the same diameter as the matrix to be electroplated so that electrical contact is made to substantially the entire diameter of the matrix during electroforming.

REFERENCES:
patent: 2018471 (1935-10-01), Russell
patent: 2675348 (1954-04-01), Greenspan
patent: 3414502 (1968-12-01), Porrata et al.
patent: 4259166 (1981-03-01), Whitehurst
patent: 4309265 (1982-01-01), Prusak
patent: 4341613 (1982-07-01), Prusak et al.

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