Check the EconoMode settings
HP does not recommend the full-time use of EconoMode. If EconoMode is used full-time, the toner supply
might outlast the mechanical parts in the toner cartridge. If print quality begins to degrade and is no longer
acceptable, consider replacing the toner cartridge.
This feature is available with the PCL 6 print driver for Windows. If you are not using that driver, you
can enable the feature by using the HP Embedded Web Server.
Follow these steps if the entire page is too dark or too light.
From the software program, select the Print option.
Select the product, and then click the Properties or Preferences button.
Click the Paper/Quality tab, and locate the Print Quality area.
If the entire page is too dark, use these settings:
Select the 600 dpi option.
Select the EconoMode check box to enable it.
If the entire page is too light, use these settings:
Select the FastRes 1200 option.
Clear the EconoMode check box to disable it.
Click the OK button to close the Document Properties dialog box. In the Print dialog, click the OK button
to print the job.