Paper Handling Mechanism; Paper Feed Mechanisms; Paper Advance Mechanism - Epson LX-300 Service Manual

LX-300 Sewica Manual

2.1.3 Paper Handling Mechanism

the paper is fed to the printer, advanced to the specified position, and
During normal operation,
ejected from the printer.
handling mechanisms, such as the tractors, rollers, and gears. This section describes the paper
handling mechanism for this printer.

2.1.3.1 Paper Feed Mechanisms

Cut sheets are fed by friction. Continuous paper is fed by a tractor. There are three ways to feed
with tractors: the push tractor method, the pull tractor method, and the push-pull tractor method.
During normal operation, the printer is set up with only one tractor, which functions as either a
push or a pull tractor, depending on where it is attached on the printer. To use the push-pull
tractor feed method, an optional tractor must be attached.
There are two ways to insert paper into the printer. Cut sheets use the top entrance and continuous
paper use rear insertion.

2.1.3.2 Paper Advance Mechanism

This section describes how the friction and tractor advance mechanisms feed paper through the
printer. The paper advance mechanism consists of the PF motor assembly, platen, dtiven roller
assembly, driven roller cover, tractor assembly, knob, PF gear train, etc. The PF motor assembly
can drive the platen both forward and in reverse.
Friction Advance Method
Paper is held by the platen, the PF driven roller, and the eject roller assembly. Turning in the
direction of the black arrows, the PF motor assembly pinion gear drives the paper advance
reduction gear. The paper advance reduction gear turns the platen gear, PF driven roller, and the
platen. The platen drives the driven roller cover; then the driven roller cover drives to eject the
paper. The paper advances in the direction of white arrows. Figure 2-3 shows the friction advance
method when the paper is fed through the top paper entrance.
COVER, ROLLER, DRIVEN
ROLLE
, PF,DRIVEN
R
Figure 2-3. Friction Advance Mechanism
These paper handling operations are performed by various paper
PLATEN GEAR
Pinion Gear
Operating Principla
PAPER ADVANCE
REDUCTION GEAR
MOTOR ASSY.,PF
2-3