HP Deskjet 5850 Color Inkjet Printer - Manual (Page 201)

print quality is poor
streaks and missing lines
If your printed pages are missing lines or dots or if streaks appear, the print
cartridges may be low on ink or may need to be
cleaned .
print is faded
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Verify that a black print cartridge is installed.
If the black text and images on your printouts are faded, you may be printing
using only the tri-color print cartridge. Insert a black print cartridge, in
addition to the tri-color print cartridge, for optimal black print quality.
●
Verify that neither of the print cartridges is low on ink.
If a print cartridge is low on ink, consider replacing the print cartridge. For the
correct part numbers, see
print cartridges .
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Verify that the protective piece of plastic tape has been removed from the print
cartridges.
1. plastic tape
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Consider selecting a higher print quality.
increase the ink volume
1. Open the Advanced Features dialog box.
2. Move the Ink Volume slider toward Heavy .
3. Move the Dry Time slider toward More .
4. Click OK > OK .
blank pages print
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The protective piece of plastic tape may still be attached to the print