Lexmark W820 - Optra B/W Laser Printer Service Manual page 20

4025-Finisher
Drive for Fin Input Roller & Regi Roller
The rotation of the Main Feed Motor drives the Main Drive Belt to transmit a driving force
to the Main Drive Gear. The rotation of the Main Drive Gear transmits a driving force to
the Feed Gear 1.
In the transmission of a driving force to the Regi Roller, the rotation of the Feed Gear 1
drives the Timing Belt 1, and the driving force from the Timing Belt 1 rotates the Regi Roll
Gear to rotate the Regi Roller.
In the transmission of a driving force to the Fin Input Roller and the H-Tra Drive, the
rotation of the Feed Gear 1 transmits a driving force to the Drive Gear 2. And the rotation
of the Drive Gear 2 is transmitted to the Drive Gear 3, and driving the Timing Belt 2
transmits a driving force to the Transport Gear, and then the Transport Gear transmits a
driving force to the entire H-Tra Drive. Drive Gear 3 rotates the Drive Gear 4. Then, the
rotation of the Drive Gear 4 transmits a driving force to the Fin Input Gear, to rotate the
Fin Input Roller. The Drive Gear 4 also transmits a driving force to the Transport Gear,
and then the Transport Gear transmits a driving force to the entire H-Tra Drive.
1-8
Service Manual