HP 3740 series - Manual (Page 58)

11.4 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
1. Verify that neither of the print cartridges is low on ink .
If a print cartridge is low on ink, consider replacing the print cartridge when the
print quality lessens.
If the print cartridge is not low on ink,
clean the print cartridge .
2. Verify that a black print cartridge is installed.
If the black text and images on your printouts are faded, you might be printing
with only the tri-color print cartridge. Insert a black print cartridge, in addition to
the tri-color print cartridge, for optimal black print quality.
3. Verify that the protective piece of plastic tape has been removed from the print
cartridges.
1. Plastic tape
4. Consider selecting a higher print quality.
Blank pages print
• The protective piece of plastic tape might still be attached to the print cartridges.
Verify that the plastic tape has been removed from the print cartridges.
• The print cartridges might be out of ink . Replace one or both empty print
cartridges.
HP Deskjet 3740 series printer User's Guide
58