Printronix SL5000r RFID Smart Label and Thermal Printers - Manual (Page 69)

Positioning The Media Sensors
69
Sensing Media with Dark Background Labels with Gaps
(Advanced Gap)
NOTE: Ribbon is not displayed in this illustration. The upper and lower
sensors are designed to function with or without ribbon installed.
The upper sensor and lower sensor are used together to detect liner gaps
between die cut labels that have a black or dark background on white or clear
liner.
1. Position the lower sensor directly under the center of the gap, and then
place the upper sensor directly over the lower sensor.
2. Check the position of the lower sensor by looking through the long,
narrow opening in the media guard. Use the visible red light emitting from
the lower sensor as a reference pointer.
3. Use the sensor handle to manually position the sensor to the center of the
gap in the media. Then use the handle on the upper sensor to position it
directly above the lower sensor.
NOTE: When using ribbon, you may need to slide the ribbon to one side to
adjust the upper sensor.
4. Select “Advanced Gap” in the Gap/Mark Sensor submenu under the
CALIBRATE CTRL menu. See “Sensing Different Media Types” on
page 71.
5. Perform an Auto Calibrate. See “Running Auto Calibrate” on page 72.
Upper Sensor
Handle
Media Guard Opening
Visible Red Beam
Lower Sensor
Upper Sensor