TSC PRINTRONIX TTP-243 Plus, Руководство пользователя

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1.3 Various Sensors
Feed Gap Sensor
The feed gap sensor detects a label gap to locate the starting print position of the next label. The sensor is mounted 4 mm off the center line of
the main mechanism.
.
In case of Label
Black Mark Sensor
The black mark sensor locates the position of label by emitting infrared rays onto the black mark at the back of the ticket. The
sensor is mounted 5.75 mm off the center line of the ticket roll width on the mechanism.