Epson EPL-N4000, Service Manual

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EPSON EPL-N4000/EPL-N4000+ Chapter 2 Operating Principles
Rev.B 56
2.2 Paper Path
The 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.
Figure 2-5. Print Cycle
A sheet of paper may be fed from either Tray 1, Tray 2, or from the MSI.
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/MSI and toward the Registration Roll. The Retard Rolls in Tray
1 and Tray 2 or the Retard Pad in the MSI made sure that only one
sheet of paper is fed. If the paper was fed from Tray 2 or the MSI 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.
Figure 2-6. Paper Path
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