Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
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2553/00
Sensing or detecting means
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B65H2553/40
using optical, e.g. photographic, elements
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B65H2553/41
Photoelectric detectors
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B65H2553/416
Array arrangement, i.e. row of emitters or detectors
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