Okidata Microline 520 Service Handbook
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Brand: OKIDATA
Category: Printer
Type: Service handbook
Model: OKIDATA Microline 520 , OKIDATA Microline 521
Pages: 321
2.2.04 Ribbon Drive Mechanism
Ribbon Drive Operation
The ribbon drive mechanism feeds the
ribbon in synchronization with the
spacing operation. The force required
to drive the ribbon is obtained from the
space motor.
The ribbon drive mechanism is
composed of the items listed below.
Ribbon Drive Gear Assembly
Ribbon Gear
This gear is located on
the space motor assembly
Ribbon Cartridge
A continuous loop
ribbon with
uni-directional feed is
used. Ink is supplied
from an ink tank, which
is built into the ribbon
cartridge.
When the space motor turns, the ribbon
gear on the spacing motor shaft rotates.
The rotation is transmitted via a
combination of gears, from the ribbon
drive gear assembly to the drive gear in
the ribbon cartridge.
Although the space motor moves in
both the forward and reverse directions
during bi-directional printing, the gears
in the ribbon drive assembly maintain
uni-directional ribbon feed by switching
the rotation direction of the gears.
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Microline 520/521 Service Handbook 2 - 29 Principles of Operation
P/N 59257803