HP 2 - Manual (Page 12)

calibrating print cartridges
After installing a print cartridge, calibrate the print cartridges to ensure the best print
quality.
To calibrate print cartridges:
1. Load a stack of plain white paper in the In tray.
2. Go to printer maintenance.
3. Click Calibrate Printer .
4. Click Calibrate , then follow the onscreen instructions.