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Printed s.r.o.: Českolipská 1449, Mělník, Tel.: +420 315 670 137, Fax: +420 315 671 495, E-mail: printed@printed.cz
Tips > Marking the layer

Generally, all films can be exposed in the reverse position, even when designed with a correct file name. That can happen at the cam-workingplace, at the plotter or at the exposition machine. This can be avoided ONLY by:
marking the TOP layer with alphanumerical signs which are NOT readable in the mirror mode,
marking the BOT layer with the MIRRORED TEXT which informs that this layer is to be placed and exposed on th bottom/rear side of the pcb!!!

Don't forget to number the inner layers from TOP to BOT.

Keeping these rules  will avoid additional phone calls, sending faxes with pcb views  and in spite of that producing the wrong pcb.

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