Xerox Corporation

Ronald A Fraser

Lam F Wong

Thomas J Behe

Samuel P Mordenga

Thomas C Keyes

Timothy G Struczewski

Gerald T Lioy

Dan F Lockwood

Ahmed-Mohsen T Shehata

Rhonda L Staudt

Carl F Oresick

Gene S Serafine

Michael J Palencar

Justine M Woods

Frank V Onorati

Jack E Van Duser

A development system for a reproduction machine includes a pair of augers which mix and transfer the developer mixture to a magnetic roll brush system. A supply auger having a length at least as great as said magnetic brush roll is positioned along a horizontal plane and adapted to transport developer material in a direction so as to supply said material to said magnetic brush roll. The auger has a first portion thereof having an irregular blade edge and wedge shaped paddles to eliminate auger mark print defects.

Auger configuration for eliminating auger mark print defect

A channel for recirculating a stream of air located adjacent a stream of marking particles exiting substantially tangentially from a marking particle transport member within a developer unit is provided. The stream of marking particles defines an inner boundary thereof extending tangentially from a first position adjacent to the transport member and defines an outer boundary thereof spaced from the transport member and the inner boundary. The channel includes a first member positioned outside the stream of marking particles. At least a portion of the first member is positioned substantially adjacent the outer boundary of the stream of marking particles and is spaced from the transport member. The channel also includes a second member connected to the first member and a third member connected to the second member. The second member is positioned adjacent the transport member and is spaced from the stream of marking particles. Substantially all the stream of air being directed by the first member is sequentially directed by the second member and the third member.

Passive air blow out seal through recirculating chamber

An apparatus for sealing a housing to prevent the escape of airborne material therefrom. Carrier beads are captured and suspended in a magnetic field extending across a region adapted to be sealed, forming a curtain of carrier beads for preventing the escape of airborne material, including toner particles, therepast. The carrier bead curtain is continuously collapsed and regenerated as carrier beads are captured, accumulated, and deposited into the housing.

Apparatus and method for creating a developer housing seal via a curtain

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Rochester, NY, United States of America

Ronald A Fraser