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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Bibliographische Detailangaben
1. Verfasser: ANTON RODI, DIETER UHRIG ET KARLHEINZ KRESTYN
Format: Patent
Sprache:fre
Schlagworte:
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Beschreibung
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.