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Note
When running smaller stapled sets (15 sheets or less), limit the quantity to 100 maximum. Unload the
stacker after each quantity is completed.
Set BFM Registration Values
Paper registration at the BFM is impacted by curl. Follow the steps below to improve paper registration
quality at the BFM for each BFM on the system. However, it is recommended that you first resolve curl
issues with the IOT decurler or, if available, the Sheet Enhancement Module setting (see
Paper
Curl) before enabling this feature.
1. Select Print Manager > Stacking tab.
2. Right-click on one of the finishing devices and select Stacker Limits.
The Stacker Limits window displays.
3. If this is a dual BFM system, select the stacker you need (for example, Stacker B).
4. Select one of the following checkboxes in the Set Registration Quality area of the window:
• Improve Set Registration: If sheets exiting the print engine have an excessive amount of upcurl
preventing the BFM from pushing sheets from the lead edge into registration position, select this
checkbox. This selection enables and lowers the scuffer in the BFM, which applies pressure to the
center of a dual staple job set, minimizing the amount of pucker or buckle between the staples.
It also helps push the sheets to the registration gate. In addition to improving set registration,
this feature helps to reduce jams.
• Improve Initial Pages Registration Within Set:Select this checkbox when you are using tab stock
mixed with A4/letter size body pages. Also, if you are experiencing jams and paper curl within
sets. The system disables buffering between sets. While registration of stock is improved,
productivity will be impacted. The system skips a number of pitches until the compiler is ready to
accept new sheets.
Note
To achieve full productivity on the BFM, buffering must be enabled. Buffering is enabled by default.
Note
Registration is not optimized for tabs and oversized covers. This includes stapled and unstapled sets.
The first 200 - 500 sheets from a cold start may exhibit this problem. Machines left in standby recover
much more quickly.
Using the Variable Shaped Tray
If you are still experiencing curl in the stacked output and want to further improve stacking quality, you
can install the Variable Shaped Tray on the stacker tray. The Variable Shaped Tray is available through
a customer kit for all BFMs and can be installed and removed by the customer. It is designed to enhance
the stacking of stock in the tray by improving sheet flatness. If you are experiencing early unloads, jams,
curling or poor stacking, use this feature for paper <140 gsm, only after trying the standard decurl
adjustments. Keep in mind that some papers will run best without the tray installed, especially if no curl
exists. Do not use this feature for stock >140 gsm.
Xerox
®
Nuvera
®
User Guide and Training Aid (UGTA)
How Do I...
Managing
14-19
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