Printer Sensors
Page 44 43-06955 - Rev Q
Cover-Open Switch
A Cover-Open Switch, mounted to the inner right 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
A Top-of-Form Sensor is mounted in the Lower 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.
Paper Low Sensor (Option)
The Epic 430
TM
has an optional interruptive Paper Low Sensor. This sensor is
mounted to the Paper Bucket and will provide an indication that the paper is
getting low. The length of paper remaining when paper low is sensed is
dependent on the paper roll core diameter. When using the modular version
of the Epic 430™ the paper low sensor will be mounted on the spindle.
Anti-Jam Sensor
An Anti-Jam Sensor is mounted to the knife frame, and senses the presence
of a ticket immediately before and after a knife cut. Under normal conditions,
right after a knife cut, a ticket is fed into the transport and presented to the
customer. If a ticket is not fed properly into the transport (for example, when a
ticket jams) the Anti-Jam Sensor detects the jammed ticket and stops printer
operation.
Transport Ticket Taken Sensor
A Ticket Taken Sensor, mounted in the Ticket Transport, is used to detect the
lead edge of the ticket as well as determine when customers have actually
taken the printed ticket.
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