Homebrew PCBs

This thread 
( http://tech.groups.yahoo.com/group/Homebrew_PCBs/message/16868 )
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the thread discussing  "Inkjet Transparency Material".
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Thanks

Marko Pavlin, 
If I were doing what you are describing I would consider
building a UV Light source (perhaps an array of  UV LEDs)
and focus it (them) on one end of a section of Fiber Optic.
with the other end of the Fiber Optic being the mobile 
exposure head.