HP Color LaserJet Pro M452 Print Media Guide - Page 38

Wrinkles on envelopes, Print-quality problems

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Table 3-5 Gray areas on envelopes: causes and corrective actions Cause Actions Envelope has seams or multiple layers. Avoid printing over seams or other multiple-layer areas. The toner density setting is too light. Reduce background (gray shading in non-imaged areas) by adjusting the toner density setting to a darker setting. See the documentation that came with your printer. Wrinkles on envelopes Wrinkles that form on envelopes after printing have several possible causes and can be corrected by following the suggested actions. Table 3-6 Wrinkles on envelopes: causes and corrective actions Cause Actions Loose envelope construction. Try different envelopes that are better constructed. See Envelope construction on page 14 for characteristics of good envelope construction. Folds are not sharply creased. Try different envelopes that are better constructed. See Envelope construction on page 14 for characteristics of good envelope construction. Low-weight/low-strength paper used in the envelope construction. Try different envelopes that are better constructed. See Envelope construction on page 14 for characteristics of good envelope construction. High moisture content. You might need to acclimate the envelope from the storage environment to your environment in order to diminish differences in heat and moisture. See Preparing print media for use on page 4. Print-quality problems Print-quality problems can be caused by the print media. Use this information to troubleshoot the problems. Background toner particles If the amount of background particles becomes unacceptable, the following procedures might help to clear the condition: ● Increase the toner density setting. This decreases the amount of background particles. ● Change the paper to a lighter basis weight. ● Check the printer's environment. Very dry (low humidity) conditions can increase the amount of background particles. Dropouts If faded-out areas or character voids (partial print) occur randomly on the page: ● The moisture content of the paper might be uneven, or the paper might have moist spots on its surface as a result of environmental humidity. Store the paper in a moisture-proof container. Try removing the top few 32 Chapter 3 Troubleshooting print media problems ENWW

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Table 3-5
Gray areas on envelopes: causes and corrective actions
Cause
Actions
Envelope has seams or multiple layers.
Avoid printing over seams or other multiple-layer areas.
The toner density setting is too light.
Reduce background (gray shading in non-imaged areas) by
adjusting the toner density setting to a darker setting. See the
documentation that came with your printer.
Wrinkles on envelopes
Wrinkles that form on envelopes after printing have several possible causes and can be corrected by following
the suggested actions.
Table 3-6
Wrinkles on envelopes: causes and corrective actions
Cause
Actions
Loose envelope construction.
Try different envelopes that are better constructed. See
Envelope
construction
on page
14
for characteristics of good envelope
construction.
Folds are not sharply creased.
Try different envelopes that are better constructed. See
Envelope
construction
on page
14
for characteristics of good envelope
construction.
Low-weight/low-strength paper used in the envelope construction.
Try different envelopes that are better constructed. See
Envelope
construction
on page
14
for characteristics of good envelope
construction.
High moisture content.
You might need to acclimate the envelope from the storage
environment to your environment in order to diminish differences in
heat and moisture. See
Preparing print media for use
on page
4
.
Print-quality problems
Print-quality problems can be caused by the print media. Use this information to troubleshoot the problems.
Background toner particles
If the amount of background particles becomes unacceptable, the following procedures might help to clear the
condition:
●
Increase the toner density setting. This decreases the amount of background particles.
●
Change the paper to a lighter basis weight.
●
Check the printer’s environment. Very dry (low humidity) conditions can increase the amount of background
particles.
Dropouts
If faded-out areas or character voids (partial print) occur randomly on the page:
●
The moisture content of the paper might be uneven, or the paper might have moist spots on its surface as
a result of environmental humidity. Store the paper in a moisture-proof container. Try removing the top few
32
Chapter 3
Troubleshooting print media problems
ENWW