Multiple Sheet Feed Prevention; Reference Diagram - Dell 3110cn Service Manual

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3.3.3 Multiple Sheet Feed Prevention

The sheets set in the MPF are occasionally stuck together at the edges. The stuck sheets cause a

multiple sheet feed or a jam. Normally, when only one sheet is fed, both the MPF ROLLER and

SEPARATOR ROLLER rotate to allow the sheet to pass. However, when two sheets are fed

concurrently, only the MPF ROLLER rotates and the SEPARATOR 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 SEPARATOR ROLLER at rest.

The SEPARATOR ROLLER is being pushed toward the MPF ROLLER by spring pressure, and

controlled by the torque limiter with which it is coupled..

Version 2 2006.03.28

Chapter 6 Principles of Operation

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