HP LaserJet Enterprise MFP M637 User Guide - Page 247

The following examples depict letter-size paper that has passed through the printer short edge first.

Page 247 highlights

NOTE: The term "fusing" refers to the part of the printing process where toner is affixed to paper. The following examples depict letter-size paper that has passed through the printer short edge first. Table 10-5 Banding defects Sample Description Possible solutions Dark or light lines which repeat down the length of the page, and are wide-pitch 1. Reprint the document. and/or impulse bands. They might be sharp or soft in nature. The defect displays only in 2. Try printing from another tray. areas of fill, not in text or sections with no printed content. 3. Replace the cartridge. 4. Use a different paper type. 5. Enterprise models only: From the Home screen on the printer control panel, go to the Adjust Paper Types menu, and then choose a print mode that is designed for a slightly heavier media than what you are using. This slows the print speed and might improve the print quality. 6. If the issue persists, go to support.hp.com. Table 10-6 Black page Sample Description The entire printed page is black. Possible solutions 1. Visually inspect the cartridge to check for damage. 2. Make sure that the cartridge is installed correctly. 3. Replace the cartridge. 4. If the issue persists, go to support.hp.com. ENWW Resolving mono print quality problems 239

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NOTE:
The term “fusing” refers to the part of the printing process where toner is affixed to paper.
The following examples depict letter-size paper that has passed through the printer short edge first.
Table 10-5
Banding defects
Sample
Description
Possible solutions
Dark or light lines which repeat down the
length of the page, and are wide-pitch
and/or impulse bands. They might be sharp
or soft in nature. The defect displays only in
areas of fill, not in text or sections with no
printed content.
1.
Reprint the document.
2.
Try printing from another tray.
3.
Replace the cartridge.
4.
Use a different paper type.
5.
Enterprise models only:
From the
Home screen on the printer control
panel, go to the
Adjust Paper Types
menu, and then choose a print mode
that is designed for a slightly heavier
media than what you are using. This
slows the print speed and might
improve the print quality.
6.
If the issue persists, go to
support.hp.com
.
Table 10-6
Black page
Sample
Description
Possible solutions
The entire printed page is black.
1.
Visually inspect the cartridge to check
for damage.
2.
Make sure that the cartridge is
installed correctly.
3.
Replace the cartridge.
4.
If the issue persists, go to
support.hp.com
.
ENWW
Resolving mono print quality problems
239