Positioning The Media Sensors
73
Sensing Media with Horizontal Black Marks (Mark) or
Media with No Label Length Indicators (Disable)
Sensing Media with Horizontal Black Marks
Position the lower media sensor for detecting horizontal black marks located
on the underside of media, and position the upper sensor above the lower
sensor to provide a consistent background.
1. Check the position of the 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.
2. Use the sensor handle to manually position the sensor to the center of the
black mark on the media.
3. Select “Mark” in the Gap/Mark Sensor submenu under the CALIBRATE
CTRL menu. See “Sensing Different Media Types” on page 77.
4. Perform an Auto Calibrate. See “Running Auto Calibrate” on page 78.
Sensing Media with No Label Length Indicators
1. When using media without label length indicators (no gaps, notches,
holes, or marks) or when you want to ignore all existing length indicators,
place the lower sensor in the center of the media so it can detect when a
Paper Out condition exists. Also set the upper sensor above it.
2. Select “Disable” in the Gap/Mark Sensor submenu under CALIBRATE
CTRL. See “Sensing Different Media Types” on page 77.
3. Perform an Auto Calibrate. See “Running Auto Calibrate” on page 78.
Lower Sensor
Media Guard
Opening
Black Mark
(underside
of media)
Sensor Handle
Visible Red Beam
from Lower Sensor
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