Troubleshooting
Paper Curl
Paper Curl
Paper curl is inherent to the laser printing processes, and occurs
when paper is subjected to heat. Paper curl tends to relax as the
paper cools while resting on a flat surface. The specification for
maximum paper curl when the paper is lying flat before print is
5 mm (0.2 inches).
Although paper curl cannot be totally eliminated, some steps can
be taken to lessen its impact, as suggested in the following table.
Table 7-35 Causes of Paper Curl
POSSIBLE CAUSE
1. Paper Path
2. Paper Surface
3. Paper Storing and Handling
4. Paper Type
RECOMMENDED ACTION
Try using the face-up paper delivery slot to shorten
and simplify the paper path.
The recommended printing surface of the page is
usually marked on the end of a ream of paper,
indicated by a small arrow and the phrase “print this
side first” Load paper in the Paper Cassette with
the recommended printing surface facing down
Jfacing up in the manual feed slot).
Over time, paper assumes the characteristics of its
storage environment (in a humid environment,
paper absorbs moisture; in a dry environment,
paper loses moisture). Paper with higher moisture
content will tend to curl more. Evaluate the storage
conditions of the paper.
Ail paper is manufactured differently (different
textures, moisture content, drying processes,
composition, etc.). Change the type of paper being
used and re-evaluate the paper curl results.
7-42
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