HP Color LaserJet Enterprise M455 Color LaserJet Enterprise M455 User Guide - Page 127

Table 6-12, Output defects, Streak defects

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Table 6-12 Output defects Sample Table 6-13 Streak defects Sample Description Possible solutions Printed pages have curled edges. The curled edge can be along the short or long side of 1. the paper. Two types of curl are possible: 2. ● 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. Reprint the document. 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, 1. Reprint the document. or the pages might be pushed out of the tray and onto the floor. Any of the following 2. Extend the output bin extension. conditions can cause this defect: 3. If the defect is caused by ● Extreme paper curl extreme paper curl, refer to the troubleshooting steps for "Output ● The paper in the tray is wrinkled or curl." deformed 4. Use a different paper type. ● The paper is a non-standard paper type, such as envelopes 5. Use freshly opened paper. ● The output tray is too full 6. Remove the paper from the output tray before the tray gets too full. 7. If the issue persists, go to support.hp.com. Description Possible solutions Light vertical streaks that usually span the length of the page. The defect displays only 1. in areas of fill, not in text or sections with no printed content. 2. Reprint the document. Remove the cartridge, and then shake it to redistribute the toner. Reinsert the toner cartridges into the printer and close the cover. For a graphical representation of this procedure, see Replace the toner cartridges. 3. If the issue persists, go to support.hp.com. NOTE: Both light and dark vertical streaks can occur when the printing environment is outside the specified range for temperature or humidity. Refer to your printer's environmental specifications for allowable temperature and humidity levels. Troubleshoot image defects 117

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Table 6-12
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
.
Table 6-13
Streak defects
Sample
Description
Possible solutions
Light vertical streaks that usually span the
length of the page. The defect displays only
in areas of fill, not in text or sections with no
printed content.
1.
Reprint the document.
2.
Remove the cartridge, and then shake
it to redistribute the toner. Reinsert
the toner cartridges into the printer
and close the cover. For a graphical
representation of this procedure, see
Replace the toner cartridges
.
3.
If the issue persists, go to
support.hp.com
.
NOTE:
Both light and dark vertical streaks
can occur when the printing environment is
outside the specified range for temperature
or humidity. Refer to your printer's
environmental specifications for allowable
temperature and humidity levels.
Troubleshoot image defects
117