Canon PIXMA MG4220 Series Setup Manual page 13

When using multiple access points:
Select Use multiple AccessPoints, then press the OK button.
An Unknown Access Point is Displayed

Access points in use nearby may also be detected.
The Access Point Name is Not Displayed Properly

Access point names with double-byte characters are not displayed properly. However, they can be selected.
The Access Point Name is Not Displayed Automatically

Refer to the manual supplied with the access point or contact its manufacturer.
The Network Password is Not Displayed Automatically

Refer to the manual supplied with the access point or contact its manufacturer.