Browse Prior Art Database

Segmented Electroplating Contact Roll

IP.com Disclosure Number: IPCOM000095442D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Harris, JP: AUTHOR

Abstract

The structure is for producing uniform thickness of cobalt-nickel electroplating on a nickel-plated resistive tape.

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Segmented Electroplating Contact Roll

The structure is for producing uniform thickness of cobalt-nickel electroplating on a nickel-plated resistive tape.

Tape T runs under a segmented contact roll R into the electroplating bath B. The conducting segments are separated by insulating disks D. The electroplating current is maintained at a constant value along the width of the tape. This is by using a constant current power source to supply each contact segment with equal and constant current and thus obtain a uniform thickness of nickel cobalt. If the contact roll were not segmented, there would be a tendency for the current to concentrate at the edges of the tape and cause a thicker plating at the edges.

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