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TONER SUMP - BAG EXPANDER Disclosure Number: IPCOM000025420D
Original Publication Date: 1985-Apr-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal


In many electrostatographic reproducing machines a flexible plastic laminated sump bag is used for storing toner that has been previously removed from the photoreceptor by the photoreceptor cleaning mechanism. The sump bag is positioned in the base of the machine and is attached to the end of a drop tube from the machine cleaner assembly. Difficulties may be experienced with the bag during the assembly process, handling or shipping wherein the bag may collapse at the neck where it is fastened to the drop tube thereby shutting off the flow of toner into the bag. As the toner backs up through the tube to the machine considerable contaminatioin to the copy quality may be realized which may require a service call to clean the machine and functionally reset the sump bag. The figure illustrates a sump bag expander 10 that is attached to the end of the drop tube 12 and fits inside the sump bag and prevents it from collapsing at the neck. The expander assembly comprises a plurality of expander arms 14 here illustrated as four, arranged around the drop tube and which are attached to the drop tube or fixed to the drop tube through the use of O-ring 16. The sump bag may be placed over the expander arms and tied around the expander assembly with tie wrap 18. This permits the toner to fall to the bottom of the bag which additionally may be made of a transparent material so that the level of toner can be visually inspected as.the sump fills up.