GBC Auto 50 MBM Crease - Manual (Page 9)

Choke Adjustment and Rotating Cylinder
Choke Control
Wheel
Rotating
Cylinder
Feed Gate
The choke is used to control the amount of vacuum applied to the front edge of the paper
through the rotating cylinder holes.
The amount of vacuum needed is dependant on the type of paper being fed. Thin gauge
paper, 80gsm to 90gsm will tend to wrap around the cylinder easier than thick gauge
paper, and will need less vacuum to feed.
By rotating the choke control wheel clockwise, more area of slot inside the cylinder is
exposed through the holes and so more of the front edge of the document is sucked onto
the wheel.
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