Multiple Sheet Feed Prevention - Epson AcuLaser C2900N Service Manual

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Chapter 6 Principles of Operation

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.

Epson AcuLaser C2900N

ROLL ASSY FEED

Retard Roller

Clutch Assy Friction

Retard Roller

Confidential

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