HP Designjet L28500 HP Designjet L28500 Printer Series - User's guide - Page 132

Troubleshoot print-quality issues, General printing advice, Use the printhead status plot

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13 Troubleshoot print-quality issues General printing advice Use the following approach when you have any print-quality problem: ● Make sure that the substrate type that you select on the front panel, and in your RIP software, is the same as the substrate type that is loaded in the printer. Make sure that the substrate type has been calibrated. CAUTION: If you have the wrong substrate type selected, you could experience poor print quality and incorrect colors, and perhaps even damage to the printheads. ● Make that you are using the correct media preset for your substrate, or that you have followed the correct procedure to generate a new media preset (see Add a new substrate on page 56). ● Make sure that you are using appropriate print-quality settings in your RIP software. ● Make sure that you are using the correct ICC profile for your substrate and print-quality settings. ● Make sure that your environmental conditions (temperature, humidity) are in the recommended range. See Environmental specifications on page 162. ● Make sure that your ink cartridges have not passed their expiration dates. See Maintain the ink cartridges on page 102. ● Avoid touching the substrate while printing is in progress. Use the printhead status plot The printhead status plot consists of patterns that are designed to highlight printhead-reliability problems. It helps you to check the performance of the printheads that are currently installed in your printer, and to determine whether any printhead is experiencing clogging or other problems. Print the printhead status plot To print the printhead status plot: 1. Use the same substrate type that you were using when you detected a problem. 2. Check that the selected substrate type is the same as the substrate type that is loaded into the printer. 3. On the printer's front panel, press , then > Clean printheads > Print test plot. , then Ink > Image-quality maintenance 126 Chapter 13 Troubleshoot print-quality issues ENWW

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13
Troubleshoot print-quality issues
General printing advice
Use the following approach when you have any print-quality problem:
●
Make sure that the substrate type that you select on the front panel, and in your RIP software, is the
same as the substrate type that is loaded in the printer. Make sure that the substrate type has been
calibrated.
CAUTION:
If you have the wrong substrate type selected, you could experience poor print
quality and incorrect colors, and perhaps even damage to the printheads.
●
Make that you are using the correct media preset for your substrate, or that you have followed the
correct procedure to generate a new media preset (see
Add a new substrate
on page
56
).
●
Make sure that you are using appropriate print-quality settings in your RIP software.
●
Make sure that you are using the correct ICC profile for your substrate and print-quality settings.
●
Make sure that your environmental conditions (temperature, humidity) are in the recommended
range. See
Environmental specifications
on page
162
.
●
Make sure that your ink cartridges have not passed their expiration dates. See
Maintain the ink
cartridges
on page
102
.
●
Avoid touching the substrate while printing is in progress.
Use the printhead status plot
The printhead status plot consists of patterns that are designed to highlight printhead-reliability
problems. It helps you to check the performance of the printheads that are currently installed in your
printer, and to determine whether any printhead is experiencing clogging or other problems.
Print the printhead status plot
To print the printhead status plot:
1.
Use the same substrate type that you were using when you detected a problem.
2.
Check that the selected substrate type is the same as the substrate type that is loaded into the
printer.
3.
On the printer's front panel, press
, then
, then
Ink
>
Image-quality maintenance
>
Clean printheads
>
Print test plot
.
126
Chapter 13
Troubleshoot print-quality issues
ENWW