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Anodic Contact Transfer Belt

IP.com Disclosure Number: IPCOM000034192D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Freeman, MT: AUTHOR [+2]

Abstract

The electroplating of a conductive surface by immersion in a bath requires that electrical contact with the object to be plated be established. In the case of printed circuit panel edge plating, brushes are typically used to introduce cathodic current source to the panel. Occasional damage to the panel occurs from this contact with the brushes. In a continuous plating system which uses a belt drive to propel the panel through the plating bath, the electrical connection can be accomplished by using metallic pads with abrasive surfaces to promote contact between the panel and the current source. The pads are attached to each link of the belt, and each link is electrically isolated from the other links.

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Anodic Contact Transfer Belt

The electroplating of a conductive surface by immersion in a bath requires that electrical contact with the object to be plated be established. In the case of printed circuit panel edge plating, brushes are typically used to introduce cathodic current source to the panel. Occasional damage to the panel occurs from this contact with the brushes. In a continuous plating system which uses a belt drive to propel the panel through the plating bath, the electrical connection can be accomplished by using metallic pads with abrasive surfaces to promote contact between the panel and the current source. The pads are attached to each link of the belt, and each link is electrically isolated from the other links. Permanently placed bus bars, which are approximately the length of a given plating cell, make contact with the pads and provide the necessary electrical connection. As shown in Fig. 1, a top view of the belt and pads, the pads 1 are placed on the top and bottom of belt 2. The belt is made of non- conductive material, and consists of a series of links 3 (Fig. 2), each of which has an opening 4 in its center that allows the pads to be interconnected. A bus bar 5 (Fig. 3), which is approximately the length of a plating cell, makes contact with pads 1 as pads pass by the bus bar. This aids in the separation of the rectifier currents. Note that the pads make direct contact with panel circuitry.

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