Canon imagePROGRAF GP-4000 - Manual (Page 729)

When printing on roll paper, the printed surface becomes
scratched
Check 1 Depending on the paper, the printed surface may become scratched when the
paper is fed.
In this case, you must set Paper retention settings to Release on the touch screen, and then manually feed the
paper. Lift the release lever, feed the roll paper until the leading edge is visible on the platen, lower the release
lever, and then proceed to the next step.
If Paper retention settings is set to Release , you will no longer be able to automatically switch between the
upper and lower roll paper.
Check 2 Has the roll paper lost tension during printing?
If the roll paper loses tension, the paper surface could be damaged and the paper could wrinkle or fold.
Set Roll paper tension (printing) in the touch screen menu to High .
Menu Structure
Note
• Carrying out Adjust print quality is recommended when changing Roll paper tension (printing) •
settings.
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