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Browse Prior Art Database

DEVELOPER MATERIAL TRANSPORT

IP.com Disclosure Number: IPCOM000026399D
Original Publication Date: 1991-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

A developer material transport device for use in electrophotographic printing machines in which developer material is fluidized and moved from one end of a developer housing to an opposite end while being attracted to a donor roll is disclosed.

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XEROX DISCLOSURE JOURNAL

DEVELOPER MATERIAL TRANSPORT
Grace T. Brewington William H. Wayman

Proposed Classification
U.S. C1.355/259 Int. C1. G03g 21/00

A developer material transport device for use in electrophotographic printing machines in which developer material is fluidized and moved from one end of a developer housing to an opposite end while being attracted to a donor roll is disclosed.

The device can utilize a cylindrical body saw tooth shaped or holey tube toner agitator as disclosed in U.S. Patent 4,926,217 issued to J. Bares. As the toner agitator rotates the developer material is discharged from a storage container into a chamber of the developer housing. The toner supply exerts pressure on the fluidized developer material to move the developer material from one end of the housing to the opposite end. An electrical bias is applied between the agitator and the donor roll so that developer material is attracted to the donor roll as the developer material advances from one end of the housing to the opposite end. A related application of electrical biasing was disclosed in German Patent DE 3434434-A1 issued to Kohyama.

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 5 SeptembedOctober 1991 317

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318 XEROX DISCLOSURE JOURNAL - Vol. 16, No. 5 SeptembedOctober 1991

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