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Selective Plating Fixture for Printed Circuit Boards

IP.com Disclosure Number: IPCOM000107288D
Original Publication Date: 1992-Feb-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 3 page(s) / 86K

Publishing Venue

IBM

Related People

Hecht, LC: AUTHOR [+2]

Abstract

Disclosed is the design of a unique printed circuit board plating fixture. This fixture has the properties such that selective area plating may be done simultaneously on either side of a printed circuit board. All possible combinations can be achieved with this invention; it is possible to simultaneously plate in a selective manner both sides of a printed circuit board. Each side may have different areas exposed for plating. Furthermore, it is possible to plate the entire surface area of one side of a printed circuit board while not plating the other side. Thus, all possible combinations can be achieved with this invention.

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Selective Plating Fixture for Printed Circuit Boards

       Disclosed is the design of a unique printed circuit board
plating fixture.  This fixture has the properties such that selective
area plating may be done simultaneously on either side of a printed
circuit board.  All possible combinations can be achieved with this
invention; it is possible to simultaneously plate in a selective
manner both sides of a printed circuit board.  Each side may have
different areas exposed for plating.  Furthermore, it is possible to
plate the entire surface area of one side of a printed circuit board
while not plating the other side.  Thus, all possible combinations
can be achieved with this invention.

      Fig. 1 shows an overall view of the invention.  A frame whose
purposes are to provide stiffness, rigidity as well as current
carrying capability is the center portion of the fixture.  This frame
is fabricated of a suitable metal such as titanium, which is
resistant to most acid and caustic plating baths.  To both sides of
the frame are attached two half frames made of polypropylene, or a
similar suitable plastic.  The seal plates, which are made of the
same plastic as the half frames, can be custom machined such as to
create the selectively open plating areas for each side of the panel.

      Fig. 2 shows an example of the seal plate.  A very large open
area with intricate boundaries is illustrated in this figure.  An
O-ring groove is machined into the seal p...