Set the correct paper size in the printer driver
The instructions given here are for Windows 7, earlier version of Windows may vary.
1. Click , then click on [Devices and Printers].
2. Right click on the printer and then left click on [Printer Properties]
3. Click on [Preferences].
4. Set the [Page Size] and [Output Size] to the size loaded in the printer.
5. Click [Apply] and then click [OK].