HP Designjet T120 ePrinter - Manual (Page 118)

Lines are blurred
Humidity can cause ink to soak into the paper, making the lines blurred and fuzzy. Try the following:
1. Check that your environmental conditions (temperature, humidity) are suitable for high-quality
printing. See Environmental specifications on page 142 .
2. Check that the paper type selected in the front panel is the same as the paper type you are using.
See View information about the paper on page 39 .
3. Try changing to a heavier paper type, such as HP Heavyweight Coated Paper.
4. Select a lower print quality (such as Speed); the printer will then use less ink.
5. Select a paper type that is slightly thinner than the paper you have loaded; this will persuade the
printer to use less ink. Here are some example paper types in ascending order of thickness: Plain
Paper, Coated Paper, Heavyweight Coated Paper.
6. If you are using glossy paper, try changing to a different type of glossy paper.
7. Print the Print Quality Diagnostic Report, and align the printhead if recommended in the report.
See The Print Quality Diagnostic Report on page 79 .
Line lengths are inaccurate
If you have measured your printed lines and find that the lengths are not sufficiently accurate for your
purposes, you can try to improve line length accuracy in the following ways.
1. Print on HP Matte Film, for which your printer's line length accuracy is specified. See Functional
specifications on page 140 .
Polyester film is about ten times more dimensionally stable than paper. However, using film that is
thinner or thicker than HP Matte Film will reduce line length accuracy.
2. Set the Print Quality slider to Quality.
3. Maintain the room at a steady temperature between 10 and 30°C (50 and 86°F).
4. Load the roll of film and let it rest for five minutes before printing.
5. If you are still not satisfied, try recalibrating the paper advance. See Recalibrate the paper
advance on page 87 .
110 Chapter 13 Troubleshooting print-quality issues ENWW