Xerox Nuvera 144 EA roduction Systems Paper Manual - page 23
Xerox Nuvera
Managing your paper supply
Paper Guide
2-5
Controlling moisture in paper
Follow these guidelines to prevent moisture-related problems:
•
Store paper on pallets, on shelves, or in cabinets. Cartons can absorb extra moisture if
placed on the floor.
•
Store paper in a climate controlled room, if possible. Most air conditioning systems provide
a good mix of temperature and humidity. Paper will perform
best
if the storage area is
between 68
°
and 76
°
F (20
°
and 24
°
C) with 35 to 55% relative humidity.
Note
If there is a large amount of foot traffic in the paper storage room, the environmental
control system may not be able to maintain the proper humidity level. Periodically check
the humidity with an accurate humidity measuring device and adjust it up or down as
needed.
•
If an air conditioned room is not available, choose an area that is protected from extreme
temperatures and humidity. Never store paper in temperatures below 50
°
F (10
°
C) or above
90
°
F (32
°
C). Relative humidity should never be below 15% or above 85%.
•
Maintain print room relative humidity between 15 and 85%.
•
Coated and specialty stocks are more sensitive to moisture than uncoated papers and
should not be stored or used in environments exceeding 65% relative humidity, if at all
possible.
•
Leave reams and cartons unopened until you are ready to load the paper into the printer.
Ream wrappers and cartons are designed to protect paper from moisture. Ream wrappers
have an internal moisture barrier that guards against moisture exchange. Once the
wrapper is opened, the protective barrier is gone.
•
If paper edges appear wavy or tight, return the paper to the supplier, or try changing the
humidity in small increments (5 to 10%) and allowing the paper to rest in small stacks for
several hours between changes.
Figure 2-1: Wavy and tight edges
•
Follow any special instructions given by the paper mill or vendor.
•
If you must use paper from an open, unsealed ream, take sheets from the center of the
ream.
•
Place opened paper in plastic bags or moisture-proof containers.