Printronix SL4M - Manual (Page 85)

SENSOR SETUP Submenus
85
SENSOR SETUP Submenus
Gap/Mark Sensor
The available options specify the sensor type needed for detecting the
Top-of-Form position on media with label length indicators (gaps, notches,
holes, or black marks).
• Gap (factory default). Select when using media with a liner space
between die-cut labels or when using tag stock with holes as label length
indicators on white background media. The Top-of-Form position is the
leading edge of the die cut label (trailing edge of the gap, notch, or hole).
• Disable . Select when using media with no label length indicators
(no gaps, notches, holes, or black marks), or when you want the printer to
ignore all existing label length indicators on the installed media.
NOTE: When you select Disable, the length of each label is based on the
Label Length value entered in the MEDIA SETUP menu or the value
sent via host software.
• Mark . Select when using media that has horizontal black marks or
inboard notches located on the underside of the label liner or tag stock.
The Top-of-Form depends on the Mark TOF Detect menu.
NOTE: For the SL4M Short Pitch RFID printer, the default is Mark.
Run Auto-Cal (Auto-Calibrate)
This feature is used to set the sensitivity and reliability of the Media Sensor in
detecting gaps, notches, holes, or black marks on the installed media, as well
as a paper out condition.
Press the
↵
key with “Run Auto-Cal” displayed. The printer will then advance
media the distance needed to accurately detect the label length indicators,
then stop at the Top-of-Form position and momentarily display the Sensed
Distance. The process takes a few seconds to complete. The end result will
be a change to the Gap/Mark Threshold, Paper Out Threshold, and Sensed
Distance values that the printer will use. The changes in values take effect
immediately within the current configuration menu.
Run Auto-Cal is completed successfully when the Sensed Distance displayed
correctly matches that of the installed media. When Gap is selected, the
Sensed Distance should match the length from the trailing edge of one gap to
the trailing edge of the next gap (one label + one gap). When Mark is
selected, the Sensed Distance should match the length from the trailing edge
of one black mark to the trailing edge of the next black mark.
Run Auto-Cal supports label lengths up to 35 inches for Gap or Mark sensing
when Use Label Length is set to Disable.