Use the following procedure to print with a custom paper size.
Note:
A paper size mismatch error may occur due to a miscalculation in the paper size.
Open the printing preferences dialog box after creating a document in an application.
Click the Frequently Used Settings tab or the Basic menu on the Detailed Settings tab.
Click Custom Paper Size... to open the dialog box.
Enter the length and width of the paper as seen in the graphic.
Enter the size of the paper edge that is vertical relative to the feed direction of the printer in Width:.
Enter the size of the paper edge that is horizontal relative to the feed direction of the printer in Length:.
Click OK to close the dialog box.
Place paper on a tray compatible with the custom paper size.
Returning back to your computer, make any other
necessary settings, and then click OK.
The printing preferences dialog box closes.
Start printing.