Using Custom Paper

To print on paper sizes other than standard sizes, you must first register the paper size.
1.
Click [] (Start) → [Devices and Printers].
The above is for Windows 7 and Server 2008 R2.
For Windows 8 and Server 2012: From the desktop, display the charm bar to the right of the screen, and click or tap [Settings] → [Control Panel] → [Devices and Printers].
For Windows Vista and Server 2008: Click [] (Start) → [Control Panel] → [Printers].
For Windows XP and Server 2003: Click [Start] → [Printers and Faxes] (or [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]).
2.
Right-click the icon of the printer you are using → click [Printing Preferences].
3.
Click [Custom Paper Size] in the [Print Settings] tab.
The [Custom Paper Size Settings] Dialog Box is displayed.
4.
Set [Name of Custom Paper Size], [Unit], and [Paper Size].
The [Height] setting must be equal to or greater than the [Width] setting.
5.
Click [Register] → [OK].
You can select the registered custom paper size from [Page Size] and [Output Size] in the [Print Settings] tab.

References

Registered custom paper sizes can be used with all printers installed on the computer you are using.
Some print functions may be unavailable when printing on paper sizes other than standard.
When registering a paper size in the properties dialog box of a Windows print server, set the margins between 5.0 mm (0.19 inches) and 50.0 mm (1.96 inches).
Custom paper sizes that can be set differ from printer model to printer model. For details about supported custom paper sizes and sources, refer to the manual supplied with the printer.