Ronald Erwin Fraser

US Patent:

51383829, Aug 11, 1992

Filed:

Mar 27, 1991

Appl. No.:

7/676024

Inventors:

Jack E. Van Duser - Webster NY
Ronald A. Fraser - Rochester NY
Frank V. Onorati - Rochester NY
Carl F. Oresick - Rochester NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 2100

US Classification:

355215

Abstract:

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.

US Patent:

56825781, Oct 28, 1997

Filed:

Feb 5, 1996

Appl. No.:

8/595458

Inventors:

Thomas C. Keyes - Fairport NY
Thomas J. Behe - Webster NY
Dan F. Lockwood - Ontario NY
Michael J. Palencar - Webster NY
Ronald A. Fraser - Rochester NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1508
G03G 2100

US Classification:

399 92

Abstract:

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.

US Patent:

57582386, May 26, 1998

Filed:

Nov 25, 1996

Appl. No.:

8/753455

Inventors:

Samuel P. Mordenga - Rochester NY
Lam F. Wong - Fairport NY
Gerald T. Lioy - Rochester NY
Rhonda L. Staudt - Webster NY
Timothy G. Struczewski - Rochester NY
Gene S. Serafine - Henrietta NY
Justine M. Woods - Webster NY
Ronald A. Fraser - Rochester NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1508

US Classification:

399256

Abstract:

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.