Label sensor for sensing edges of light conductive labels
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United States of America Patent
Stats
-
Oct 8, 2002
Grant Date -
N/A
app pub date -
Oct 14, 1999
filing date -
Feb 14, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a sensor for the contactless scanning of labels, arranged on a support material which is moved relative to the sensor, the sensor including a transmitter arranged at a distance to the labels for emitting transmission light beams which penetrate at least partially the labels and the support material, and also comprising a receiving element, located opposite the transmitter and an evaluation unit for being coupled to at least the receiving element, wherein the receiving element comprises at least two receivers, wherein when the transmission light beams fully strike a label or the support material, the transmission light beams run between the receivers and when a portion of the transmission light beams is deflected at an edge of a label, and is conducted inside of said label, said portion strikes one of the receivers and is evaluated in the evaluation unit for detecting the edges.
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