Dear Technetters,
is it possible to use reflective AOI on DST-foil ?

I have tried to run some tests on DST-foil. It worked very well except for AOI.
Approx. 50 - 200 false defects pr. board after optimisation !
It must be due to the (lack of) contrast between the DST-cupperfoil and the resin.

This amount of defects is unacceptable for AOI-test.
An acceptable level would be max. 5-10 pr. board, preferably none.

The equipment used is a PC-1450 from Orbotech.

Any comments would be very welcome.


With best regards

Jan Thuesen

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