Canon ImagePROGRAF iPF650 Series Service Manual page 99

The shutter position (opening) is detected by the shutter HP sensor and the rotation of the shutter motor.
The shutter is controlled at the following six positions.
From borderless
printing ink
receiving channel
of HP
To Suction Fan To Suction Fan
[1]
[2]
Borderless printing
Shutter HP Sensor
Shutter
F-2-23
T-2-6
Shutter During borderless
Shutter opening
position
[1] Only HP side open Yes (17 inch or shorter
media)
[2] Fully open Yes (B2 or larger
media)
[3] Fully close
[4] 1/4 open
[5] 1/2 open
[6] 3/4 open
[4]
[5]
[3]
[6]
From borderless
printing ink
receiving channel
[2]
of BP
Non-borderless printing
Shutter Motor
During non-
printing bordered printing
Yes
Yes
Yes
Yes
Yes
Chapter 2
2-33