Canon S400 User Manual page 314

Windows
Open the Printer Properties dialog box and click the Advanced button in the
1
Main tab.
Click the Color tab.
2
Use the Intensity slide bar to change the intensity setting.
3
Macintosh
When using Manual for printing, click the Details button in the Printer
1
Properties dialog box.
In the color panel, use the Density slide bar to change the print density
2
setting.
Printout Is Unsatisfactory
Troubleshooting 314