Xerox Majestik 5765 Manuale di riferimento - Pagina 28
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APPLICATIONS
24
Hints, Tips & Testing Results
Xerox testing has shown the following:
•
All color copiers/printers experience a higher jam rate when
performing duplex copying. Paper jams can be caused by the
curl created when running the side 1 image. This unpredictable
side 1 curl is the main reason that heavy-weight and coated
papers cannot be recommended for two-sided copying.
•
Another cause of increased jams is the contamination of the
feed rolls with fuser oil when running a large number of duplex
copies. This contamination may require more frequent cleaning
of the rollers. Your Xerox representative can give you
information on performing these cleaning procedures (order
number 700P98965). To help reduce this contamination
problem, and improve feeding reliability, mix one-sided copying
jobs with two-sided copying jobs when possible. During large
Duplex jobs, periodically run 5 blank sheets from the Paper Tray
Bypass in the Black Mode to help keep the feed rolls clean.
•
Image quality on side 2 will usually be equal to the side 1 image,
but is more likely to have image mottle/light area problems
caused by slight waviness in the paper and variable toner
transfer. Both of these factors are greatly influenced by the
paper's quality. This is another reason that heavy-weight and
coated papers are not recommended for duplexing.
•
If the Image Shift or Corner Shift feature is selected with two-
sided copying, change the horizontal shift direction on side 2 to
the opposite of the side 1 position.
Example: If you shift the side 1 image 0.5 inches (13mm) to the
right, the side 2 image should be shifted 0.5 inches (13mm) to
the left. Top and bottom image shift positions do not have to be
changed, however if the original document is rotated 90 degrees
on the Document Glass, then the side 2 image should be shifted
to the vertically opposite direction.
•
As mentioned above, heavy-weight and coated papers are not
recommended for Duplex copying due to their variable curl on
side 1, and image quality problems when running side 2. In
many cases, however, good results have been seen with 32 lb
paper and even 90 lb Index. The level of success depends
largely on the exact paper being used, how it is loaded, the
image being used, and the unique variables in each machine. If
attempting to duplex these materials, refer to the Hints and Tips
sections for Heavy-Weight and Coated papers for more specific
directions. Results with these papers cannot be guaranteed
and nothing can be done to improve performance if it is not
satisfactory.
MAJESTIK 5760/5765 MATERIALS USAGE GUIDE