Table of Contents
Advertisement
----------------------------------------------------------~
4.2.4
Paper Feed Mechanism and Operation
The printing paper is moved up to the next line as the pulse
motor runs to mesh the gears and rotate the fixed pin platen
and sprocket tractor (option).
The paper feed mechanism consists of the followinq:
(a) Pulse motor with gear
(b) Reduction gear
(c) Platen with fixed sprocket and friction roller
(d) Tractor feed unit
(1)
Paper feed operation (See Fig. 4-4.)
The paper feed pulse motor is mounted on the left side
frame, and its rotation is transmitted to the platen via
the reduction gear.
The rotation of the platen is also
transferred to the tractor feed unit (option) via the
transmission gear.
The mechanism is so designed that the paper is fed 4.23 mm
(1/6 inch) when the pulse motor advances 24 steps (180°).
4.2.5
Paper Lock Release Mechanism (See Fig. 4-5.)
When the
pap~r
lock release lever is moved forward, the paper
chute is turned by the curved release shaft to allow clearance
between the pressure rollers and the platen, thereby allowing
insertion of paper.
When the paper lock release lever is moved
back, the pressure rollers are pushed against the platen by the
pressure roller springs so paper can be fed.
39
Advertisement
Table of Contents
