Printronix SL5000E series User Manual page 106

Chapter 3
QUICK SETUP
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).
•
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
•
Mark. Select when using media that has horizontal black marks located
on the underside of the label liner or tag stock. The Top-of-Form position
is the leading edge of the black mark.
•
Gap. Select when using media with a liner space between die-cut labels
or when using tag stock with notches or 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).
•
Advanced Gap. Select when using media that has liner gaps between
die cut labels with black background. The Top-of-Form position is the
leading edge of the die cut label (trailing edge of the gap, notch, or hole).
•
Advanced Notch. Select when using media with notches or holes that
interrupt a black vertical line on the underside of the media. The Top-of-
Form position is the leading edge of the die cut label (trailing edge of the
gap, notch, or hole).
The factory default is Disable.
Auto Calibrate
This feature is used to improve 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.
Auto Calibrate can also be initiated from the TEST PRINT key, the
CALIBRATE CTRL menu, or the DIAGNOSTIC menu. Press the
"Auto Calibrate" 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.
Auto Calibrate 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
leading edge of one black mark to the leading edge of the next black mark.
Auto Calibrate supports label lengths up to 24 inches.
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Label Length value entered in the QUICK SETUP or MEDIA
CONTROL menu or the value sent via host software.
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