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HP Designjet 8000s Printer Series - Adjust heater and print mode settings

If you see banding in all colors and you have already performed media advance calibration, then you can try adjusting the heater temperature and print mode settings.
Banding in all colors may be caused by the following factors:
  • Small print dot size: Heat will cause a smaller dot size. The higher you set the heater temperature, the smaller the dot size is which results in light banding.
  • Ink absorption by the media: If the media you are using is not capable of absorbing the ink as it is placed, then this can result in dark banding.
To improve ink placement and absorption try the following:
  • Set a lower print heater temperature for light banding or a higher temperature for dark banding.
  • Change the print mode to reduce the quantity of ink placed on the media for dark banding.
  • Change the print mode from bidirectional printing to unidirectional printing for dark banding.
After each change to a setting, try printing the nozzle print pattern to check the image quality.
Follow the steps given below to change the heater temperature and print mode settings:
  1. Press the ONLINE key and select the MEDIA REG menu with the (Down arrow) key.
    Figure : Front panel menu
  2. Select PRINT HEATER T in the MEDIA REG menu with the (Up arrow) and (Down arrow) keys.
    Figure : PRINT HEATER T option displayed on front panel
    Parameters: 15o degree Centigrade to 55o degree Centigrade, or ** to turn the heater off.
    note:
    This value will only be applied if the HEATER PREF option is set to HEAT PANEL.
  3. Select the number you want to change by using the (Left arrow) and (Right arrow) keys and change the numeric value using the (Up arrow) and (Down arrow) keys.
  4. Press the OK key to confirm the parameter.
    Print the nozzle print pattern to check the image quality.
  5. To change the Print mode:
    Select PRINT MODE in the MEDIA REG menu with the (Up arrow) and (Down arrow) keys.
    Figure : PRINT MODE option displayed on front panel
  6. To change the option setting displayed, press the OK key.
    Figure : Front panel menu
  7. Using the (Up arrow) and (Down arrow) keys, select a print mode that places less ink on the media and increases the number of passes.
    Figure : Front panel menu
    Parameters:
    • NORMAL - Standard and high speed print modes (720 x 720 dots per inch (dpi) - 8 passes) - ink usage 100% percent.
    • H-QUALITY - High quality print mode (720 x 720 dpi - 16 passes) - ink usage 100% percent.
    • H-DENSITY - High density print mode (720 x 720 dpi - 16 passes) - ink usage 200% percent.
    • 3 TIMES - High quality, high density print mode (720 x 720 dpi - 24 passes) - ink usage 300% percent.
    • DRAFT - Draft print mode (360 x 720 dpi - 4 passes) - ink usage 50% percent.
    • FAST - Fast print mode (720 x 720 dpi - 8 passes) - ink usage 100% percent.
    • F-H-QUALITY - High quality print mode (720 x 720 dpi - 16 passes) - ink usage 100% percent.
    • F-H-DENSITY - Fast high density print mode (720 x 720 dpi - 16 passes) - ink usage 200% percent.
    • F-3 TIMES - Normal very high density print mode (720 x 720 dpi - 24 passes) - ink usage 300% percent.
    • FINE DRAFT - Fine draft print mode (540 x 720 dpi - 6 passes) - ink usage 67% percent.
    • FINE - Fine print mode (720 x 720 dpi - 8 passes) - ink usage 100% percent.
    • F-FINE - Fast fine print mode (720 x 720 dpi - 8 passes) - ink usage 100% percent.
    note:
    This value will only be applied by the printer front panel setting if the PRINT MODE PREF option is set to FRONT PANEL.
  8. Press the OK key to confirm the parameter.
    Print the nozzle print pattern to check the image quality.
  9. To change the print direction mode to unidirectional, select PRINT DIRECTION with the (Up arrow) and (Down arrow) keys in the MEDIA REG menu.
    Figure : PRINT DIRECTION option displayed on front panel
  10. Select UNIDIR with the (Up arrow) and (Down arrow) keys for unidirectional printing.
  11. Press the OK key to confirm the parameter.
If the image quality still does not improve, we recommend that you change the media.

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