Open Devices and Printers, right click on the ticket printer and choose Printer properties:
Go to Advanced tab and click Printing Defaults:
In Layout tab click Advanced:
In Paper size choose Roll Paper 80x3276 mm:
Press OK to save.
In case you have different drivers, you might need to add this paper size by yourself:
Enter width 80mm, length 3276mm and press Save paper size. Click OK to close the window.