Browse Prior Art Database

Copper Plate Rack with Reusable Plating Robber

IP.com Disclosure Number: IPCOM000121899D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Burbank, DW: AUTHOR [+3]

Abstract

Disclosed is a copper plating rack which utilizes a titanium robber to aid in current distribution. The titanium robber is removable for stripping off the copper and subsequently reused for a copper plating robber system. This is a low-cost alternative to the costly use of panel edges for the 'robbing' area for copper plating or the large automated copper plating lines which are in use in the industry.

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Copper Plate Rack with Reusable Plating Robber

      Disclosed is a copper plating rack which utilizes a
titanium robber to aid in current distribution.  The titanium robber
is removable for stripping off the copper and subsequently reused for
a copper plating robber system.  This is a low-cost alternative to
the costly use of panel edges for the 'robbing' area for copper
plating or the large automated copper plating lines which are in use
in the industry.

      The copper plating rack is preferably for a 10 inch by 15 inch
panel.  The actual product is as close as .5 inch to the edge of the
panel vs. a typical 1.5 or 2 inch border at large volume facilities.
(Refer to the figure.)  The rack has 4 points of power connection 1,
two on each side (the 15-inch side) located at equal distances from
the corners of the panels.  This helps provide the best even power
distribution.  In addition, the entire rack, except the section for
electrical connections, is coated with a plastisol coating to
eliminate any stray high current density areas.  The plating rack can
be constructed from either copper or titanium (reduced weight) with
stainless steel for reinforcement.

      The robber is constructed of titanium and is a 2-piece design
2.  Both the bottom and top piece are connected to the plating rack
on the right and left sides 3.  The specific point of connection is
such that this area will not be plated, and thus maintain good
integrity for many plating cycles...