HP Deskjet 6840 Color Inkjet Printer - Manual (Page 115)

10.2 Aligning print cartridges
The printer automatically aligns the print cartridges after a new print cartridge is
installed. You can also align the print cartridges at other times to ensure optimal
print quality.
To calibrate the print cartridges:
1. Load letter-size or A4-size plain white paper in the In tray.
2. Open the
HP Inkjet Toolbox .
3. Select the Calibrate panel.
4. Click the Align button, and then follow the onscreen instructions.
10.3 Calibrating color
Perform a color calibration only if the colors in photographs printed with the photo
print cartridge are consistently tinted.
Before performing a color calibration, align the print cartridges , then reprint your
photograph. If the color is still tinted, then perform a color calibration.
To calibrate color:
1. Load letter-size or A4-size plain white paper in the In tray.
2. Verify that a
photo print cartridge is installed in the printer.
3. Open the HP Inkjet Toolbox .
4. Select the Calibrate Color panel.
5. Follow the onscreen instructions.
10.4 Automatically cleaning print cartridges
If your printed pages are missing lines or dots, or if they contain ink streaks, the print
cartridges might be low on ink or might need to be cleaned.
If the print cartridges are not low on ink, follow these steps to clean the print
cartridges automatically:
1. Open the HP Inkjet Toolbox .
2. Select the Clean panel.
3. Click the Clean button, and then follow the onscreen instructions.
Caution: Clean print cartridges only when necessary. Unnecessary cleaning
wastes ink and shortens the life of the cartridge.
HP Deskjet 6800 series printer User's Guide
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