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  • Information
    Important Print Security Update

    HP was recently made aware of a vulnerability in certain inkjet printers by a third-party researcher. HP has updates available for download to address the vulnerability. Details and more information are available in the Security Bulletin

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HP Officejet J6400 All-in-One Series - Faded or Dull Colors in Printouts

Issue
The product is working, but colors in the printed output are missing, faded, or dull in comparison to the original.
Check the paper to make sure you are using the correct paper type for the project. If the paper is too fibrous, the ink applied by the printer might not fully cover the print surface.
Follow these steps to check the estimated ink levels using HP Toolbox.
  1. Make sure the product is on and connected to the computer.
  2. Open HP Solution Center.
    • Windows XP: On the Windows taskbar, click Start, click All Programs, point to HP, and then click HP Solution Center.
    • Windows Vista: On the Windows taskbar, click the Windows icon (), click All Programs, click HP, and then click HP Solution Center.
    • Windows 2000: On the Windows taskbar, click Start, click Programs, point to HP, and then click HP Solution Center.
  3. Click Settings.
  4. Point to Print Settings, and then click Printer Toolbox. Printer Toolbox opens.
  5. Check the ink levels displayed on the Estimated Ink Levels tab.
Figure : Estimated ink levels
  1. In the program being used for printing, click File, and then click Print.
    The Print window opens.
  2. Make sure the appropriate product is selected, and then click Preferences or Properties.
    The Preferences/Properties window opens.
  3. Click the Printing Shortcuts tab.
    Consider modifying some or all of the options in the Printing Shortcuts menu to increase print quality.
    • Print quality: If the quality of the printouts is not acceptable, try increasing the print quality. To print more quickly, try decreasing the print quality.
    • Paper type: If one of the options matches the paper type exactly, select it instead of Automatic.
    • Paper size: Make sure that this option matches the paper loaded in the product.
    To see additional options, click the Advanced tab, and then click Advanced Features.
    The Advanced Features window opens. Consider changing the following option:
    Ink volume: Adjust the amount of ink that prints on a page. For lighter images (less ink), drag the slider to the left. For darker images (more ink), drag the slider to the right. The lighter the ink volume, the more quickly the printout dries.
Solution four: Check for defects using a diagnostic page
Step one: Print a diagnostic page
If these steps have not helped, print and evaluate a diagnostic page to see if the print cartridges are causing the problem.
  1. Press Setup.
  2. Use the right arrow button () to highlight Print Report, and then press the OK button.
  3. Use the right arrow button () to highlight Self-Test Report, and then press the OK button.
    Figure : Self-test diagnostic page
  1. Printer information
  2. Nozzle test pattern
  3. Color bars and boxes
  4. Event log
  note:
Ink level warnings and indicators provide estimates for planning purposes only. When an indicator shows low ink levels, consider having a replacement ink cartridge available to avoid possible printing delays. You do not need to replace ink cartridges until print quality becomes unacceptable.
Identify which cartridge printed which part of the diagnostic page, so that if you find defects on the page, you know which cartridge is the problem.
Because you can install different combinations of print cartridges in your printer, different patterns will show on the diagnostic page. However, the right and left cartridges print in the same areas of the page no matter which cartridges are installed.
    Figure : Example diagnostic page layout
  1. Printed by the right cartridge
  2. Printed by the left cartridge
  note:
If you are printing in reserve mode (one cartridge is missing), the area of the diagnostic page where that cartridge prints is blank.
The patterns in each area might look slightly different on your page.
In general, if the printer and print cartridges are working properly, the patterns (which look like grids of lines) should contain few or no missing lines. Also, the colors of the patterns and bars should be about the same as the color dots on the print cartridge label.
  note:
Do not compare the colors on your diagnostic page to the colors on this web page. Unless your monitor is calibrated, the colors will not be correct. Instead, compare the colors on the page to the colors dots on the print cartridge label. While the color dots may match exactly, they are more accurate than the colors on the monitor.
Missing lines or streaked bars
If a pattern shows more than a few missing lines, or a bar is streaked, that print cartridge is not functioning properly.
Figure : The left cartridge shows missing lines and a streaked bar
If your diagnostic page shows missing lines or streaked bars, click here to continue troubleshooting (c00447738) (in English).
Color mix
If the color of the patterns or bars is different from the color dots on the cartridge label, the cartridge is not functioning properly.
Figure : The color of one of the left cartridge bars is different from the color on the cartridge label
If your diagnostic page shows colors that are very different from the colors on the cartridge label, click here to continue troubleshooting (c00447768) (in English).
Missing colors
If any of the color blocks or patterns is entirely missing, the cartridge is not functioning properly.
    Figure : Missing colors
  1. Good diagnostic page
  2. Yellow pattern and bar missing
If any of the patterns or color blocks is entirely missing, click here to continue troubleshooting (c00447768) (in English).
Ink smears
If the diagnostic page shows smeared ink, you may need to clean your cartridges.
Figure : Smeared ink
If your diagnostic page shows smeared ink, click here to continue troubleshooting (c00447770) (in English).
Service or replace your HP product if you completed all preceding steps.
To see if your product is still under warranty, go to the warranty check website http://www.support.hp.com/checkwarranty. Contact HP Support to schedule a repair or replacement. If you are in Asia Pacific, Contact HP Support to find a local service center in your area.
Repair fees might apply for out-of-warranty products.

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