CLEANING DEVICE FOR SPEED DETECTING ROLL FOR ENDLESS BELT OF IMAGE FORMING DEVICE

PURPOSE:To prevent the variation of the outside diameter of a speed detecting roll by removing the foreign material adhering on the speed detecting roll. CONSTITUTION:When the foreign material 31 such as toner adheres on an encoding roll 28, during the use of an image forming device, the foreign mat...

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Bibliographische Detailangaben
Hauptverfasser:	IDA AKIHIRO, IZEKI HIDEJI
Format:	Patent
Sprache:	eng
Schlagworte:	CINEMATOGRAPHY CONVEYING ELECTROGRAPHY ELECTROPHOTOGRAPHY HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES HOLOGRAPHY MAGNETOGRAPHY PACKING PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PNEUMATIC TUBE CONVEYORS SHOP CONVEYOR SYSTEMS STORING TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent the variation of the outside diameter of a speed detecting roll by removing the foreign material adhering on the speed detecting roll. CONSTITUTION:When the foreign material 31 such as toner adheres on an encoding roll 28, during the use of an image forming device, the foreign material 31 is shifted to a cleaning brush 33, accompanied with the revolution of the encoding roll 28. The foreign material 31 is scraped off from the encoding roll 28 by the cleaning brush 33, and collected in a foreign material collecting part 34a. Since the foreign material 31 adhering on the encoding roll 28 is surely scraped by the cleaning brush 33, the outside diameter of the encoding roll 28 is prevented from being varied. Accordingly, the encoding roll 28 can correctly detect the revolution speed of a copying belt 7.