8 ALIGNMENT
Device is provided with a sensor for the use of alignment black mark printed on paper in order to handle roll of tickets with
pre-printed ields and a ixed length.
The alignment sensor assembled on the device is “relection” sensor: this kind of sensor emits a band of light and detects
the quantity of light relected to it. The presence of the black mark is therefore detected by the amount of light that returns
to the sensor, considering that the light is relected by the white paper and absorbed by the black mark.
The following paragraphs show how to correctly set the coniguration parameters of device in order to assure the alignment.
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