Browse Prior Art Database

Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal


In an electrophotographic printing machine, toner particles are frequently depleted from the developer mixture as a multiplicity of copies are made. In order to maintain copy quality at an optimum level, the concentration of toner particles must be maintained substantially constant. This may be achieved by dispensing toner particles into the chamber of the housing storing the developer mixture. Toner particle dispenser 76 stores toner particles in chamber 80 of hopper 78. These toner particles dispense under the influence of gravity from chamber 80 of hopper 78 into entrance port 84 of dispenser 82. Dispenser 82 includes a tubular member 86 extending along the developer housing chamber. Tubular member 86 includes a plurality of substantially equally spaced apertures 88 therein. Auger 90 is positioned interiorly of tubular member 86. As auger 90 rotates, toner particles are advanced in the direction of arrow 92. Motor 94 is coupled to auger 90. Actuation of motor 94 causes auger 90 to rotate. Auguer 90 includes a multiplicity of substantially flexible fibers extending outwardly from a support shaft. These fibers are wound spirally about the support shaft. Tubular member 86 has a blade integral therewith and extending inwardly from the interior peripheral surface thereof. The blade extends along the length of tubular member 86. The free end portion of the blade engages the flexible fibers. As auger 90 rotates, the flexible