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TONER DISPENSER

IP.com Disclosure Number: IPCOM000024045D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 239K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the development system of an electrophotographic printing machine, toner particles are frequently added thereto. This may be achieved by storing a supply of toner particles in a hopper 10. The unused toner particles, i.e., those particles not dispensed to the sump of the developer housing, are returned thereto by auger 12. Toner particles are dispensed to the developer sump housing by being advanced from the lower portion of housing 10 by auger 12. The outer cylindrical portion of the auger has a plurality of apertures therein for discharging the toner particles into. Auger 12 is a closed loop extending from the lower portion of housing 10 to the upper portion thereof. In this manner, the toner particles are discharged from housing 10 to the developer sump with the undischarged toner particles being returned to housing 10. In order to prevent caking of the toner particles, the lower portion of auger 12 extends along the side of housing 10 in an upwardly direction therein. This portion is indicated by the reference numeral 14, As motor 16 rotates auger 12, portion 14 thereof also rotates. As portion 14 of auger 12

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XEROX DISCLOSURE JOURNAL

TONER DISPENSER
ProposedJ. S. Alden Classification

U.S. Cl. 118/644

mt. Cl, B05b 5/02

In the development system of an electrophotographic printing machine, toner particles are frequently added thereto. This may be achieved by storing a supply of

toner particles in a hopper 10. The unused toner particles, i.e., those particles not dispensed to the sump of the developer housing, are returned thereto by auger 12. Toner particles are dispensed to the developer sump housing by being advanced from the lower portion of housing 10 by auger 12. The outer cylindrical portion of the auger has a plurality of apertures therein for discharging the toner particles into. Auger 12 is a closed loop extending from the lower portion of housing 10 to the upper portion thereof. In this manner, the toner particles are discharged from housing 10 to the developer sump with the undischarged toner particles being returned to housing 10. In order to prevent caking of the toner particles, the lower portion of auger 12 extends along the side of housing 10 in an upwardly direction therein. This portion is indicated by the reference numeral 14, As motor 16 rotates auger 12, portion 14 thereof also rotates. As portion 14 of auger 12

rotates, it prevents the caking and bridging of the toner particles facilitating the discharging thereof from housing 10. Alternate techniques for preventing bridging of the toner particles may also be employed. For example, wiper arms may be...