Abstract: An electroplating arrangement having particular use in the manufacture of stamper plates for disc record production comprises a rectangular plating bath, one side being non-vertical with respect to the bath base. A filter screen divides the bath into an anode region and a cathode region, the region including anode and cathode electrode arrangements respectively.A stamper plate to be plated is mounted on the cathode electrode arrangement which is connected to a motor capable of rotating the arrangement about an axis perpendicular to the plate. The anode arrangement comprises an elongate porous bag containing anode material and is disposed parallel to the cathode arrangement and non-vertical wall. An electrolyte input pipe extends through the bag and screen to lie opposite the mounted stamper plate directing inflowing electrolyte thereat. An output exit is disposed within the anode region on the bath base such that the anode arrangement lies within the flowpath from said entrance to said exit.

Abstract: A method for manufacturing modulated disc records (i.e. video or audio records) including bonding a plastics material foil to the unmodulated face of a stamper plate before the stamper plate is secured between the rams of the record press. This method obviates the necessity for backsanding the stamper plate, as hitherto adopted procedure which was time consuming, unreliable and often hazardous.

Abstract: An electroplating arrangement, particularly suitable for forming stamper plates for video or audio recordings. The arrangement has a means for inhibiting flow of electrolyte from the region of the anode to the cathode. This means may be a tube which encloses the region between the cathode and anode and has a plurality of inwardly facing holes. Filtered electrolyte is supplied to the tube.