Paper Path - Lexmark W820 Service Manual

4025-XXX

Paper Path

Paper Path is the physical route that a sheet of paper takes through the printer during a
print cycle; from leaving the Paper Cassette to arriving at the Output Tray. Rubber rollers
and other components drive the paper along the Paper Path.
A sheet of paper may be fed from either Tray 1, Tray 2, or from the MP Feeder. At the start
of a print cycle the Nudger Roll moves a sheet of paper into the Feed Roll. The Feed Roll
moves a single sheet of paper out of Tray 1/Tray 2/MP Feeder and toward the Registration
Roll. The Retard Rolls in Tray 1 and Tray 2 or the Retard Pad in the MP Feeder made sure
that only one sheet of paper is fed. If the paper was fed from Tray 2 or the MP Feeder the
Take Away Roll drives the paper to the Registration Roll. The Registration Roll aligns the
lead edge of the paper with the lead edge of the image on the drum. The Registration Roll
then drives the paper into the Drum/BTR area. The rotation of the Drum and BTR drive
the paper into the Fuser where the Heat and Pressure Rolls drive the paper into the
Offset/Pinch Roll. During simplex printing the Offset Roll drives the paper into the Output
tray. During duplex printing, the Offset Roll rotation is reversed and the Offset and Exit
Roll drives the paper into the Duplex Module.
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General Information