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Printer Sensors
100-88002 Rev B Page 55
Printer Sensors
The Epic 880
TM
printer uses several sensors to provide feedback to the host system,
as pictured in the figures below.
Figure 18. Sensor Breakdown and Locations.
Paper Out Sensor
A Paper Out Sensor, mounted to the Lower Paper Guide, optically senses a Paper
Out flag located in the ticket path. When the sensor detects the flag, it indicates that
the ticket roll is depleted.
Cover-Open Switch
A Cover-Open Switch, mounted to the inner left side plate, is activated when the Top
Cover is closed and the latch depresses the switch arm. When the Top Cover is
opened, the Cover Open switch trips, and the printer goes off-line.
Top-of-Form Sensor
A Top-of-Form Sensor is mounted in the paper path, and senses a pre-printed black
dot (if present) on the ticket stock. This black mark is used to position the paper for
printing on a preprinted form. Typically the ticket is pre-positioned to the Top-of-Form
and when the ticket is complete, the paper is fed to the Top-of-Form and then cut.
Cover-Open
Switch (inside)
Pa
p
er Low Sensor
A
nti-Jam Sensor
Pa
p
er Out Sensor
To
p
-of-Form Sensor