Adjusting The Label Stop/Black Mark Sensor - Intermec EasyCoder PF8 User Manual

Adjusting the Label Stop/Black Mark Sensor

PF8d/PF8t Printers User's Guide
Chapter 3 — Troubleshooting and Maintaining the Printer
The label gap sensor is a center-aligned photoelectric sensor that
measures the light that passes through the media path. The
transparency of the liner of a label supply may change from batch
to batch, making it difficult for the sensor to determine the
length of the media. If this happens, the status LED will change
from green to orange, indicating you need to adjust the sensor
using the Auto-Sensing mode. For more information, see
"Understanding Auto-Sensing Mode" on page 11.
Note: This sensor is only adjustable on the PF8t.
The default position of the Label Stop Sensor/Black Mark sensor
is all the way to the right of the slot, at the center of the printer.
For an illustration, see the
For most media, this is the correct position. On rare occasions,
such as unusually small labels or non-typical placement of black
marks or notches, the sensor can be adjusted as necessary.
If you are using Gap sensing or Continuous stock, this sensor
MUST be in the default, far-right position, or "Out of Paper",
"Media not Loaded", or other media fault errors may continually
occur.
To locate and adjust the Black Mark/Label Stop Sensor
1 Open the top of the printer.
2 Lift the printhead.
3 The Black Mark sensor is right near the front of the printer,
just behind the roller, in a groove that runs from the left side
of the printer to the middle. The sensor optics are visible as a
small slit on the left, and there is a ridged finger-notch to the
right.
4 If the sensor is not all the way to the right, put your fingertip
in the ridged finger-notch and slide the sensor all the way to
the right. Do not touch the sensor itself, as natural finger oils
may dirty the optics.
5 Lower the printhead, close the printer, and try printing again.
"Media Compartment" on page 4.
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