Decurler Overview
D o c u C o lo r 50 0 0 A dm i ni s t r at o r G u i de
1.
Decurler Adjustment
TIP: Please read all the Decurler information before using the
Custom Decurler Profile procedure.
When paper is exposed to heat, the paper loses moisture and
curls toward the heat source. High toner coverage jobs tend to
curl more due to the toner plastification effect on the paper
surface. The system tries to reduce this by using mechanical
devices within the paper path called Decurlers.
Paper curl is caused by many variables, including, but not in any
particular order:
•
The weight of the paper and whether it is coated or uncoated.
•
The amount of dry ink/toner and the area being covered on a
sheet: the heavier the coverage, the greater the tendency to
curl.
•
How the paper is loaded in the tray. Make sure you load the
paper as instructed on the ream wrapper.
•
The atmospheric conditions of the room where the paper is
stored and where the printer is located, especially those
related to humidity and temperature.
•
The heat generated during the fusing processes.
Your system is designed with several automated settings to
control curl. When using these settings the machine automatically
sends paper through the proper Decurler:
•
System Default: Automatically determines the amount of
pressure needed at the different decurlers in order to reduce
the output curl of the paper.
•
A, B, C, and D settings: Preset Decurler settings, which are
manually selected as an alternative to the System Default
setting.
See "Decurler A-D Profile settings" on page 3.
IMPORTANT!
While paper curl is caused by many variables, it is
important to understand that the preset and custom Decurler
profile settings use lookup tables for curl control that are based on
the job's image density ratio and the printer's humidity values,
only.
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