Canon imagePROGRAF iPF8400S - Manual (Page 931)

When printing on thin roll paper, the printed surface becomes scratched When printing on thin roll paper, the printed surface becomes scratched
Cause Corrective Action
The roll paper has sagged during printing, scratching
the surface of the paper and causing wrinkle creases
in the paper. Set Roll Tension to High in the Control Panel menu.
(See "Menu Settings.")
➔ P.641
If you change the Roll Tension setting, We recommend that you perform Adj. Quality.
(See "Automatic Banding Adjustment.")
➔ P.775
iPF8400S When printing on thin roll paper, the printed surface becomes scratched
User's Guide
Troubleshooting
Problems Regarding Paper
931