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Thick media
Tips for using thick media
ALWAYS return OTAC to the normal thin media position after using
thick media so the scanner can automatically run its stitch maintenance
system.
IMPORTANT NOTE: Stitch maintenance only works with OTAC
lowered. Always leave the scanner with OTAC in the normal (lowered)
position so that the stitch maintenance can operate when the scanner is
next powered on.
Supporting Thick Originals
To avoid damage to the scanner and the document and to ensure an
optimally focused image it is important to support large thick originals during
scanning. Always support both sides of a thick document as it passes
through the scanner.
Scanning speed is reduced when scanning thick originals
The scanner runs more slowly when OTAC is in use (yellow led and raised
lid). This is to allow more time for the operator to manage the document
Modifying stitch for OTAC
Originals that do not bend are imaged above the surface of the glass. This
can cause image overlap (stitching) problems unless the operator adjusts
for it. The scanner stitch parameters can be changed manually using
Nextimage software:
Insert the thick original in the scanner, scan it then look at the image on the
screen
Check the image for overlapping or missing at the overlapping camera
points covered by the thick media
Adjust the stitching values using the Nextimage stitch setup dialog.
Re-scan the document and repeat until the effect is minimized.
Treating Edge Distortion
Thick originals can produce distortions in the image when the front edge
meets the exit rollers or the trailing edge leaves the entry rollers. By default,
automatic leading and trailing edge suppression is turned on to remove the
affected areas from all thick media scanned images. The feature can be
turned off in the Nextimage software if necessary.
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