If you load a paper size that is not selected automatically, specify the paper size using the control panel.
Display the Tray Paper Settings screen.
When using the standard operation panel
Press the [Paper Setting] key.

When using the Smart Operation Panel
Press [Home] (
) at the bottom of the screen in the center.
Press the [User Tools] (
) icon on the [Home] screen.
Press [Tray Paper Settings].
Select the tray for which you want to change the paper size.
Press [Manual Paper Settings].
Press [Paper Size] tab.
Select the loaded paper size, and then press [OK].

Close the Tray Paper Settings screen.
When using the standard operation panel
Press the [Paper Setting] key.
When using the Smart Operation Panel
Press [User Tools] (
) on the top right of the screen.
Press [Home] (
) at the bottom of the screen in the center.
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For details about paper sizes selected automatically, see Recommended Paper Sizes and Types.
If you want to print on paper that is selected automatically after printing on a paper size that is not selected automatically, you must return the setting to [Auto Detect]. Reload the paper, and select [Auto Detect] in Step 5.