DesignJet T900 and T1500 Printer Series - User guide

If edges of objects or lines appear to be poorly dened or lighter in density, and you have already set the
print-quality slider to Quality in the driver dialog, select the custom print-quality options, and try setting the
quality level to Normal. See Printing on page 60.
Edges of objects are darker than expected
If edges of objects seem darker than expected, and you have already set the print-quality slider to Quality in
the driver dialog, select the custom print-quality options, and try setting the quality level to Normal. See
Printing on page 60.
Horizontal lines at the end of a cut sheet print
This type of defect aects only the end of a print, within approximately 30 mm of the trailing edge of the
paper. You may see some very thin horizontal lines across the print.
To avoid this problem:
1. Print the Image Diagnostics Print. See The Image Diagnostics Print on page 158.
2. Consider printing with roll paper.
3. Consider using larger margins around your image.
Vertical lines of dierent colors
If your print has vertical bands of dierent colors along it:
1. Try using thicker paper, choosing from the recommended paper types such as HP Heavyweight Coated
Paper and HP Super Heavyweight Paper. See Order paper on page 132.
2. Try using higher print-quality settings (see Printing on page 60). For instance, if you have set the Print
Quality slider to Speed, try setting it to Quality.
White spots on the print
You may notice white spots on the print. This is probably due to paper bers, dust or loose coating material.
To avoid this problem:
1. Try cleaning the paper manually with a brush before printing, to remove any loose bers or particles.
2. Always keep the cover of your printer closed.
3. Protect your paper rolls and sheets by storing them in bags or boxes.
ENWW Edges of objects are darker than expected 155