Registering a Custom Paper Size
You can register one frequently used custom paper size.
1
Select <Menu> in the Home screen. Home Screen
2
Select <Paper Settings for Mobile Print> 
<Size/Type Settings> <Custom>.
<Size/Type Settings> <Custom>.3
Specify the length of the <X> side and <Y> side.
Execute the following steps in sequence: <X> enter the length of the <X> side using 
/ 
<Y> enter the length of the <Y> side
enter the length of the <X> side using / <Y> enter the length of the <Y> side 
4
Select <Apply>.
5
Select the paper type.
