Hi,
I'm not sure I clearly understand your requirement but it sounds like you want two masks of
different colors on each board surface?  You could try one of the photo-coverlay for flexible
circuits.  Some are dry films some are screen able.  DuPont has a dry film that I can resolve
less than 2 mil features and Rogers has a liquid that probably resolves well.  I have a sample
of the Rogers and one day I will get around to testing.
Chuck Brummer
Acuson

F.Pitzl wrote:

> Hello,
>
> At this day I was asked by our engineer if it is possible to put a
> additional silk-screen onto the board.
> This additional silk-screen has to be in a different color than the
> board and the normal one. Even it should have the same clearance and
> minimal line width requirements as a Solder Mask. For this it must be a
> photoimageable process.
>
> What would you say to this issue ?
> Is it possible to run a second "SolderMaskProcess" with a different Mask
> and color and how much would it cost on your opinion ?
>
> Regards,
> Florian Pitzl
>
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