Epson 2170 - page 57

3. PullTractor Method
The pull tractor advances paper in basically the same way as the push tractor. The push tractor is installed at
the paper entrance and pushes paper into the printer. On the other hand, the pull tractor is installed at the
paper exit and pulls paper out of the printer mechanism. As a result, the paper tension unit is not required.
Figure2-8 illustrates pull tractor operation whenpaper is fed throughthe bottom paperentrance.
Figure 2-8 Pull Tractor Operation Usingthe Bottom Paper Entrance
Operating Principles FX-2170 ServiceManual
2-8 Rev.A