Canon imagePROGRAF iPF750 MFP M40 - Manual (Page 653)

5.
Press ▲ or ▼ to select VacuumStrngth, and then press the OK button.
6.
Press ▲ or ▼ to select the desired setting value, and then press the OK button.
Adjustments for Better Print Quality > Adjusting the feed amount >
iPF750 Adjusting the Vacuum Strength (VacuumStrngth)
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