Paper Advance Mechanisms - Epson FX 1170 - B/W Dot-matrix Printer Service Manual

2.1.4.2 Paper Advance Mechanisms

This section describes how the friction advance and tractor advance mechanisms work to advance the PaPer . . .
through the printer.
The paper is held between the platen and paper guide rollers and between the paper tension roller and paper
tension unit cover. The PF motor pinion gear, turning in the direction of the black arrow, drives the paper
advance reduction gear. The paper advance reduction gear turns the platen gear and the paper tension roller
gear. The paper advances in the direction of the white arrow. Figure 2-4 illustrates the friction advance method
when the paper is fed through the top paper entrance.
In the friction advance method, the paper guide roller spring holds the paper against the platen. You can
release this pressure and free the paper by setting the release lever to the tractor feed position.
Paper (Cut Sheet)
Figure 2-4. Friction Advance Operation Using the Top Paper Entrance
Paper Advance Reduction Gear
2-6