APPAREIL POUR CONTROLER LE TRANSPORT DE FEUILLES SUR UN MARGEUR DE MACHINES D'IMPRESSION
A device for monitoring sheet transport at sheet feeders for printing machines includes at least one photo-sensor disposed above at each side, respectively, of the sheet feeder, apparatus for providing adjustable positioning of said photo-sensors in spaced relation to the leading edge and corners of...
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Format: | Patent |
Sprache: | fre |
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Zusammenfassung: | A device for monitoring sheet transport at sheet feeders for printing machines includes at least one photo-sensor disposed above at each side, respectively, of the sheet feeder, apparatus for providing adjustable positioning of said photo-sensors in spaced relation to the leading edge and corners of the sheet; control logic responsively connected to the photo sensors for processing signals from the photo-sensor for producing a fault indication in case a sheet feeding failure is detected by the photo-sensors. |
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