Canon imagePROGRAF TX-3100 36" Printer with Basket - Manual (Page 581)

Roll width is the same
Select the paper
roll currently being
fed into the platen
*1
*1 In the following cases, neither roll 1 nor roll 2 are being fed onto the platen. In such cases, paper roll 1
is selected.
• When the printer has switched to sleep mode and has returned to the initial position
• When the printer has been turned on
• When cut paper has been fed into the printer and has exited it
581