Hello Philippe,
I think that you mean "descreen". This is to get rid of the
nasty pattern that you get when scanning a magazine or
newspaper image. It is caused by the dots that make up the
image interfering with the scan.
If you are using GIMP as your image processor, there is a
descreen filter in "Filters -> Enhance -> Despeckle" that
will go the job.
If you don't have GIMP, you can try softening the image if
your backend drivers supports it, or for a last resort, try
this:-
Carefully (!!) place a suitable sheet of glass on the scanner
bed and put the image on top of that. Scan as usual. The glass
will slightly defocus the image and remove the pattern. Be very
careful not to scratch the scanner's own glass!!
Regards
Dave Hill
-- Dave Hill, Kempston, Bedford UK dave@minnie.demon.co.uk Sicth munce ago, I cutn't evun spel enjuneer, and now I are one!
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