Device for reading a mold code on a glass bottle
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United States of America Patent
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-
Jul 2, 1991
Issued Date -
N/A
app pub date -
Feb 15, 1990
filing date -
Aug 20, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for reading code elements which are relieved from a container. A source of light projects normally at the code elements while the container is rotated to sequentially illuminate each of the code elements. A sensor receives light which is reflected approximately normal to the surface of the container but avoids light which is reflected from the surface of each code element at an appreciable angle relative to the normal. The intensity of the reflections from regions of said container not containing a code element are relatively large compared to reflections received from portions of the container surface containing a code element and a threshold is set therebetween.
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