Display the initial settings screen.
When using the standard operation panel
Press the [User Tools/Counter] key.
When using the Smart Operation Panel
Press the [Home] key on the top left of the control panel. Flick the screen to the left, and then press the [User Tools] icon () on the Home screen 4.
Press [Tray Paper Settings].
Press [Printer Bypass Paper Size].
Press [Custom Size].
If a custom size is already specified, press [Change Size].
Press [Vertical].
Enter the vertical size using the number keys, and then press [].
Press [Horizontal].
Enter the horizontal size using the number keys, and then press [].
Press [OK] twice.
Close the initial settings screen.
When using the standard operation panel
Press the [User Tools/Counter] key.
When using the Smart Operation Panel
Press [User Tools/Counter] () on the top right of the screen.