Konica Minolta SC-215 - Manual (Page 51)

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6.11 DESCREEN
Click on the Descreen button to access a drop-down menu that
allows you to specify the type of document you are scanning in order to
eliminate the moiré pattern* commonly found in printed matter. You can
specify Newspaper, Magazine, or Catalog.
Before Descreen After Descreen
*Moiré pattern—an undesirable pattern resulting from the incorrect screen
angle of the overprinting halftone.
6.12 SHARPEN
Click on the Sharpen button to access a drop-down menu that allows
you to specify a level to sharpen the scanned image. You can specify a
Sharpen setting of Light, More, Heavy, or Extra Heavy.