Canon imagePROGRAF iPF6450 Basic Manual page 132

Ink Level Detection
8
Press ▲ or ▼ to select Yes, and then press the OK button.
9
A confirmation message about updating ink information is
shown on the Display Screen. After checking the message,
press the ▶ button.
10
Press ▲ or ▼ to select Yes, and then press the OK button.
Ink level detection is now released.
132
iPF6450
Basic Guide