Canon imagePROGRAF iPF820 User Manual page 105

5.
Load the roll in the printer. (→P.118)
Note
•
Before borderless printing, make sure the blue Switch on the platen is set toward the ● side. (→P.629)
6.
Select the type of paper. (→P.113)
7.
Specify the paper length. (→P.114)
Printing procedure
Basic Printing Workow 91