example, a barcode): the outgoing voltage is constant while passing the white paper between two black marks, presents
a peak at each black mark and presents some “noise” at each barcode.
In this case, the optimal value for the “Notch/B.Mark Threshold” parameter is located about halfway between the peak value
NON-THERMAL SIDE
THERMAL SIDE
Peak
“Notch/B.Mark
Threshold”
Noise
of the “Notch/B.Mark Threshold” at an intermediate point. In these cases, it is mandatory that the portion of paper between
the point of printing end and the front notch is completely white (no graphics). In this way, the only next graphic detected
by the sensor for alignment after the printing end will be the notch.
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