A depression mark at expose? Are you sure this is not from the
developer? What do the marks look like.
John Haman Jr.
American Board Companies
Process / Product Engineer
----------
>
> Fellow Technetters,
>
>
> Does any one ever came across depression mark on Printed Circuit
Board
> during Solder mask Exposing?How does this marks eppears and how to
> overcome this problem?
>
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