E-Tech STYLUS Pro WT7900 - Manual (Page 112)

112
112 | Solving Problems
Improving Print Quality
You can often improve print quality by doing the following:
• Run a nozzle check and cleaning cycle. See page 83 for instructions.
• Align the print head. See page 87 for instructions.
If these suggestions don’t help, try the solutions in the following table.
Problem Solution
Your print has poor print
quality. If you see incorrect or missing colors, or if your print has horizontal banding,
check the following:
◗ Run a nozzle check and clean the print head, if necessary. See page 83 for
instructions.
◗ Check the ink indicators to see if you are low on ink. (If you replace ink
cartridges with the printer turned off, the ink indicators will not be accurate.)
Replace ink cartridges if necessary, as described on page 88.
◗ Check the expiration date printed on each ink cartridge. If a cartridge is too
old, replace it as described on page 88.
◗ Make sure the type of paper you loaded matches the paper setting you
selected on the control panel and in your printer software.
◗ If you’re using cut sheet media, make sure the printable side is face up.
Your print has vertical
banding. Vertical banding is caused by print head misalignment. This may appear as
misregistration, ghosting, or misaligned vertical lines.
Align the print head as described on page 87.
White areas in your print are
uneven in density. Due to the special properties of Epson white ink, some settling of the ink
components can occur over time. This may cause uneven printing.
◗ To maintain optimal image quality, shake the installed white ink cartridge
once a week; see page 79.
◗ Run a nozzle check and select the PRINT WITH WHITE INK option; see
page 83. Check the results and clean the print head.
◗ If you haven’t printed with white ink for a long time, you may need to refresh
the white ink supply; see page 86.
◗ Make sure the AUTO WT INK REFRESH setting hasn’t been turned off in
the Printer Setup menu.
◗ When storing and using Epson film, strictly follow the temperature and
humidity guidelines on page 45.