Browse Prior Art Database

MAGNETIC SEALS WITH DONOR ROLL DEVELOPMENT

IP.com Disclosure Number: IPCOM000026279D
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 71K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrophotographic development system known as magnetic brush development employs a magnetic brush to load a donor roll. An improvement in magnetic brush development is achieved by positioning magnets adjacent to the donor roll 1 and magnetic brush 2 as shown in the figure. The magnets form donor 3 and input 4 magnetic seals that prevent contamination of the donor roll and magnetic brush roll.The magnetic seals effectively control toner dirt, air flow turbulence and carrier bead pick off affording improved copy quality and developer life.

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XEROX DISCLOSURE JOURNAL

MAGNETIC SEALS WITH DONOR ROLL DEVELOPMENT
Daniel M. Bray
Jeffery J. Folkins
Gerald M. Kryk

Proposed Classification
U.S. C1.355/215 Int. C1. G03g 15/01

0

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 1 January/February 1991 33

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MAGNETIC SEALS WITH DONOR ROLL DEVELOPMENT(Cont'd)

An electrophotographic development system known as magnetic brush development employs a magnetic brush to load a donor roll. An improvement in magnetic brush development is achieved by positioning magnets adjacent to the donor roll 1 and magnetic brush 2 as shown in the figure. The magnets form donor 3 and input 4 magnetic seals that prevent contamination of the donor roll and magnetic brush roll.The magnetic seals effectively control toner dirt, air flow turbulence and carrier bead pick off affording improved copy quality and developer life.

34 XEROX DISCLOSURE JOURNAL - Vol. 16, No. 1 January/February 1991

[This page contains 1 picture or other non-text object]