Canon imagePROGRAF GP-4000 - Manual (Page 485)

*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
485