Canon imagePROGRAF GP-4000 Online Manual page 726

Perform print quality adjustment to automatically adjust the feed amount.
Check 3
Perform Adjust print quality from Paper feed adjustment and Print alignment pattern to automatically adjust
the feed amount.
Automatic Banding Adjustment
Is Set priority for Paper feed adjustment in the touch screen menu set to
Check 4
Prioritize print quality?
Set Set priority for Paper feed adjustment to Prioritize length accuracy, and then carry out Adjust feed
length.
Adjusting Feed Amount
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