HP DesignJet T850 DesignJet T850 Printer Series DesignJet T950 Printer SeriesU - Page 128

Lines are blurred, Line lengths are inaccurate, Paper, Coated Paper, Heavyweight Coated Paper.

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1. Check that you are using appropriate print-quality settings. See Printing on page 35. 2. Print the Print Quality Diagnostic Report, and align the printhead if recommended in the report. See To print the Print Quality Diagnostic Report on page 86. 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 175. 2. Check that the paper type selected in the control panel is the same as the paper type you are using. See View information about the paper on page 32. 3. Try changing to a heavier paper type, such as HP Heavyweight Coated Paper. 4. Select a higher print quality (such as Normal or Best), the printer will then use more time to dry 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. Print the Print Quality Diagnostic Report, and align the printhead if recommended in the report. See To print the Print Quality Diagnostic Report on page 86. 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. Try the following: 1. Print on HP Matte Film, for which your printer's line length accuracy is specified. See Functional specifications on page 172. 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. Lines are blurred 119

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1.
Check that you are using appropriate print-quality settings. See
Printing
on page
35
.
2.
Print the Print Quality Diagnostic Report, and align the printhead if recommended in the report. See
To print the Print Quality Diagnostic Report
on page
86
.
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
175
.
2.
Check that the paper type selected in the control panel is the same as the paper type you are
using. See
View information about the paper
on page
32
.
3.
Try changing to a heavier paper type, such as HP Heavyweight Coated Paper.
4.
Select a higher print quality (such as
Normal
or
Best
), the printer will then use more time to dry 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.
Print the Print Quality Diagnostic Report, and align the printhead if recommended in the report. See
To print the Print Quality Diagnostic Report
on page
86
.
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.
Try the following:
1.
Print on HP Matte Film, for which your printer's line length accuracy is specified. See
Functional
specifications
on page
172
.
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.
Lines are blurred
119