Chapter2 Setup 80 Paper width / Backing paper width Shutter state 73.1 to 87.6 mm (2.88 to 3.45 inches) Open the inner six shutters. 87.7 to 102.2 mm (3.45 to 4.02 inches) Open the inner eight shutters. 102.3 mm (4.03 inches) or longer Open all the shutters.