Canon MultiPASS L6000 Software Manual page 110

Removing Show-Through
Image show-through is caused by patterns from the reverse side of a
page showing through the original image. You can remove image show-
through while preserving the image.
To remove show-through:
1. Select the cover page portion you want to adjust.
2. On the Adjust menu, point to Advanced, and then click Remove
Show-Through.
3. In the Remove Show-Through dialog box, use the Range slider to
adjust Removal slider sensitivity according to the contrast of the
pixels showing through to the background.
If there is a wide range between color, move the Range slider to the
right. If there is little range between the pixels showing through and
the background, move the slider to the left.
4. Drag the Removal slider to the left to remove less show-through, to
the right to remove more show-through.
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