HP Color LaserJet Enterprise M751n Laser Printer - Manual (Page 183)

Table 6-10 Output defects
Sample Description Possible solutions
Printed pages have curled edges. The curled
edge can be along the short or long side of
the paper. Two types of curl are possible:
● Positive curl: The paper curls toward
the printed side. The defect occurs in
dry environments or when printing
high-coverage pages.
● Negative curl: The paper curls away
from the printed side. The defect
occurs in high-humidity environments
or when printing low-coverage pages.
1. Reprint the document.
2. Positive curl: From the printer control
panel, select a heavier paper type. The
heavier paper type creates a higher
temperature for printing.
Negative curl: From the printer control
panel, select a lighter paper type. The
lighter paper type creates a lower
temperature for printing. Try storing
the paper in a dry environment prior to
use, or use freshly-opened paper.
3. Print in duplex mode.
4. If the issue persists, go to
support.hp.com .
The paper does not stack well in the output
tray. The stack might be uneven, skewed, or
the pages might be pushed out of the tray
and onto the floor. Any of the following
conditions can cause this defect:
● Extreme paper curl
● The paper in the tray is wrinkled or
deformed
● The paper is a non-standard paper
type, such as envelopes
● The output tray is too full
1. Reprint the document.
2. Extend the output bin extension.
3. If the defect is caused by extreme
paper curl, refer to the
troubleshooting steps for "Output
curl."
4. Use a different paper type.
5. Use freshly-opened paper.
6. Remove the paper from the output
tray before the tray gets too full.
7. If the issue persists, go to
support.hp.com .
ENWW Resolve print-quality problems 173