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Chapter 6 Principles of Operation
Epson AcuLaser C2900N
Revision B
Confidential
2.3.1 Multiple Sheet Feed Prevention
The sheets set in a tray is occasionally stuck together along the edges. The stuck sheets cause a mul-
tiple sheet feed or a jam. The sheets are fed by the ROLL ASSY FEED (PL3.2.4) to a position between
the ROLL ASSY FEED and the Retard Roller (HOLDER ASSY RETARD: PL2.1.5). Normally, when
only one sheet is fed, both the ROLL ASSY FEED and Retard Roller rotate to allow the sheet to pass.
However, when two sheets are fed concurrently, only the ROLL ASSY FEED rotates and the Retard
Roller is locked thereby allowing the upper sheet to pass by being separated from the lower sheet that
is stopped by the friction with the Retard Roller at rest.
The Retard Roller is being pushed toward the ROLL ASSY FEED by spring pressure, and controlled by
the torque limiter (Clutch Assy Friction) with which it is coupled.
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