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ASYMMETRIC FLEXIBLE HOPPER WITH PNEUMATIC AGITATION

IP.com Disclosure Number: IPCOM000027244D
Original Publication Date: 1995-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 98K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a conical shaped hopper with an asymmetrically located bottom discharge area which is constructed from a flexible rubberlike material with external pneumatic agitation. This enables the user to avoid material bridging problems and eliminate internal agitation. Material will then flow to a filler auger for metering into containers. The hopper design lowers quality risks to toner by eliminating course particle generating seals and also decreases hopper clean up time enabling quicker produce changeovers.

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XEROX DISCLOSURE JOURNAL

ASYMMETRIC FLEXIBLE HOPPER Proposed Classification WITH PNEUMATIC AGITATION U.S. C1.355/255
Paul M. Wegman
15/00 Int. Mikhail Vaynshteyn C1. G03g

Proposed is a conical shaped hopper with an asymmetrically located bottom discharge area which is constructed from a flexible rubberlike material with external pneumatic agitation. This enables the user to avoid material bridging problems and eliminate internal agitation. Material will then flow to a filler auger for metering into containers. The hopper design lowers quality risks to toner by eliminating course particle generating seals and also decreases hopper clean up time enabling quicker produce changeovers.

In existing fillers that are used to fill copier cartridges with toner from a hopper, an auger is used to transport the toner from the hopper into the cartridge. One of the vital elements of these systems is an agitator which is a bracket($ rotating inside the hopper around the auger shaft. The agitator mixes (agitates) the powder to prevent it from acquiring a higher density under the influence of gravity. Higher density powder worsens or even prevents the ability of the toner to move and flow properly. A problem associated with this method of agitation is that for the agitating system to be effective, the exit from the hopper should be located in the center of the hopper. This positioning sometimes causes bridging which disrupts and even prevents the smooth flow of toner to the auger. Bridging can be prevented by positioning the exit from the hopper asymmetrically or acentrically from the center of the axis of the hopper. However, this arrangement prevents evenly...