Method and an apparatus for marking faults on rapidly moving mat

Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...

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83362, 118670, 209564, 209587, 226 45, 356431, 364507, B07C 5342, B05C 1100

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active

047460202

ABSTRACT:
In a method of marking faults on rapidly moving material webs the material web is moved past a fault detection scanning device, which cyclically scans the web transverse to its longitudinal direction, and past a marking device at a defined distance therefrom. Signals coming from the fault detection scanning device (16) are analyzed one after the other to determine whether they are fault signals or structure signals. The fault signals which are detected are stored with their web coordinates. Checks are made at short time intervals as to whether a fault signal is present in the store (11) which corresponds to the longitudinal coordinate which is just moving past the marking device (13). A marking is effected if a fault signal is present at the corresponding web coordinates (FIG. 1).

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patent: 4211132 (1980-07-01), Nichols, III et al.
patent: 4395764 (1983-07-01), Matsue
patent: 4507564 (1985-03-01), Shimada

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