Canon imagePROGRAF iPF6450 - Manual (Page 114)

3
Make sure the Main sheet is displayed.
4
In the A Media Type list, select the type of paper that is loaded. In this case, click Plain Paper.
5
After confirming that D Easy Settings is selected, click Poster in the E Print Target list.
6
Click the Page Setup tab to display the Page Setup
sheet.
7
In the A Page Size list, click the size you registered, My Horizontal Banner.
Printing Vertical or Horizontal Banners (Large-Format Printing; Windows) iPF6450
User's Guide
Enhanced Printing Options
Printing banners or at other non-standard sizes
114