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SPLIT FLOW DEVELOPMENT

IP.com Disclosure Number: IPCOM000024158D
Original Publication Date: 1979-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 222K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a magnetic brush development system, a developer mixture of toner particles and carrier granules is periodically advanced from sump 10 to developer housing 12. Paddle wheel 14 rotates in the direction of arrow 16 to advance the developer mixture in an upwardly direction, The developer mixture falls from paddle wheel 14 onto chute 18. Chute 18 guides the developer mixture to magnetic brush rollers

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XEROX DISCLOSURE JOURNAL

SPLIT FLOW DEVELOPMENT E~ft Lehmann
L. N. Nost

Proposed Classification
U.S. Cl. 427/145

mt. Cl. B41m 5/16

In a magnetic brush development system, a developer mixture of toner particles and carrier granules is periodically advanced from sump 10 to developer housing 12. Paddle wheel 14 rotates in the direction of arrow 16 to advance the developer mixture in an upwardly direction, The developer mixture falls from paddle wheel 14 onto chute 18. Chute 18 guides the developer mixture to magnetic brush rollers 20 and 22. Magnetic brush roller 20 rotates in the direction of arrow 24 and magnetic brush roller 22 rotates in the direction of arrow 26. In this way, the flow of developer mixture is split substantially equally between roller 20 and 22. Roller 20 rotates in a direction opposed to the direction of rotation of photoconductive drum 28 indicated by arrow 30. Contrariwise, roller 22 rotates in the direction of arrow 26, i.e., in the same direction as drum 28. It is apparent that the developer mixture is split between oppositely rotating developer rollers to improve development of the electrostatic latent image recorded on the photoconductive drum.

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Volume 4 Number 5 September/October 1979 687

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