DEVELOPING DEVICE FOR XEROGRAPHIC COPYING MACHINES

DEVELOPING DEVICE FOR XEROGRAPHIC COPYING MACHINES

Developing device for xerographic copying machines. Developing a xerographic toner image without the use of carrier beads is carried out by means of an applicator roller which transfers toner from a trough towards the image bearing medium via a scraper element mounted at the exit opening of the trou...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WATERSCHOOT, WILLIAM C, PALMANS, WILLY J
Format: Patent
Sprache:eng ; fre
Schlagworte:
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Beschreibung
Zusammenfassung:Developing device for xerographic copying machines. Developing a xerographic toner image without the use of carrier beads is carried out by means of an applicator roller which transfers toner from a trough towards the image bearing medium via a scraper element mounted at the exit opening of the trough. An exact regulation of the amount of toner which is transferred in this way may be carried out by providing a DC-voltage between the transfer roller and the scraper. GV.1003