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DFX-8500
Rev. B
1-38
1.5.1 M-3I60 Printer Mechanism
The M-3I60 printer mechanism is a 18-pin (9-pin two lows), serial impact dot matrix printer mechanism
developed for the DFX-8500. It is designed to provide high-speed, high-volume printing, and is especially
heavy and durable when compared with existing terminal printer mechanisms, Its paper feeding
mechanism uses several kinds of fan-fold paper, and an automatic mechanism is included to provide
enhanced paper handling.
The structural differences between the DFX-8500 and the DFX-8000 are:
DFX-8500 includes a CR motor isolation resistance sensor.
DFX-8500 includes a paper jam sensor.
DFX-8500 includes a ribbon jam sensor.
To prevent paper jams, the DFX-8500 includes a tractor wire at the front and rear tractors.
The detection method of the carriage encoder sensor has been changed. In the DFX-8000, the
encoder plate was attached to the rotor of the CR motor, while the DFX-8500 uses a belt-type
encoder.
DFX-8500 does not include a carriage home position sensor.
Figure 1-25. M-3I60 Printer Mechanism