Using the HP DeskJet Control Panel for DOS
1. Open the DeskJet Control Panel by changing your directory to
C:\HP1220C.
2. Type DJCP, and press ENTER.
3. Select printer settings that are not available from your DOS
applications. Printer settings that are selected from a DOS application
may override printer settings selected from the Control Panel.
4. If desired, clean and align the print cartridges for best print quality.