TechNetters,

Here is a low-tech question.  I have a customer who has been calling for printing of board numbers, revs, serial numbers using epoxy ink.  This operation is time consuming, messy, prone to human error.  We've been talking about using computer-printed paper labels instead of epoxy ink.  The environment these boards go into is not particularly benign.  Some are used in train cars.  They get an acrylic conformal coating.

Has anyone had experience in the matter of label durability?  Any test methods to suggest?  Thanks for any comments.  

Lou Hart
412-858-6184
Compunetix

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