3.11.3 Multiple Sheet Feed Prevention
The sheets set in a tray or cassette are occasionally stuck together along the edges. The stuck sheets
cause a multiple sheet feed or a jam. The sheets are fed by the Feed Roll to a position between the
Feed Roll and the Separator Roll. Normally, when only one sheet is fed, both the Feed Roll and
Separator Roll rotate to allow the sheet to pass. However, when two sheets are fed concurrently, only
the Feed Roll rotates and the Separator Roll is locked thereby allowing the upper sheet to pass by
being separated from the lower sheet that is stopped by the friction with the Separator Roll at rest.
The Separator Roll is being pushed toward the Feed Roll by spring pressure, and controlled by the
torque limiter (Clutch Assy Friction) with which it is coupled.
3.11.4 Reference diagram
Clutch Assy Friction
6 – 47
Chapter 6 Principles of Operation