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AIR KNIFE DETONING OF A CLEANING BRUSH

IP.com Disclosure Number: IPCOM000026732D
Original Publication Date: 1993-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 90K

Publishing Venue

Xerox Disclosure Journal

Abstract

A cleaning apparatus is frequently employed in an electrophotographic printing machine to remove residual toner particles 34 from photoconductive surface 31 of belt 30. As shown in the Figure, the cleaning mechanism 10 includes a rotatable brush 26. As brush 26 rotates in the direction of arrow 24, it dislodges any residual toner particles 34 adhering to photoconductive surface 31. Airflow separates the toner particles 34 from brush 26 and removes them from chamber 28 of housing 36. A vacuum duct (not shown) is connected to outlet port 38 of housing 36. The particles removed from brush 26 flow in the air stream in the direction of arrow 22 through the vacuum duct. The inlet port 40 forms an air knife whereby a high velocity stream of air, flowing in the direction of arrow 20 impinges the fiber tips of the brush 26 in a direction against the rotation of the brush 26. The high velocity air stream deflects the fibers and causes the toner particles to dislodge from the fibers as the fibers flip back to the original position after leaving the air stream. Both the position and velocity of the air knife are designed so that the air stream detones the brush fibers to a greater depth than a previously used flicker bar.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

AIR KNIFE DETONING OF A CLEANING BRUSH
Bruce E. Thayer

Proposed Classification
U.S. C1.355/296 Int. C1. G03g 21/00

J. Freiberger

XEROX DISCLOSURE JOURNAL - Vol. 18, No. 3 May/June 1993 275

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

Page 2 of 2

AIR KNIFE DETONING OF A CLEANING BRUSH (Cont'd)

A cleaning apparatus is frequently employed in an electrophotographic printing machine to remove residual toner particles 34 from photoconductive surface 31 of belt 30. As shown in the Figure, the cleaning mechanism 10 includes a rotatable brush 26. As brush 26 rotates in the direction of arrow 24,
it dislodges any residual toner particles 34 adhering to photoconductive surface 31. Airflow separates the toner particles 34 from brush 26 and removes them from chamber 28 of housing 36. A vacuum duct (not shown) is connected to outlet port 38 of housing 36. The particles removed from brush 26
flow in the air stream in the direction of arrow 22 through the vacuum duct. The inlet port 40 forms an air knife whereby a high velocity stream of air, flowing in the direction of arrow 20 impinges the fiber tips of the brush 26 in a direction against the rotation of the brush 26. The high velocity air stream deflects the fibers and causes the toner particles to dislodge from the fibers as the fibers flip back to the original position after leaving the air stream. Both the position and velocity of the air knife are designed so that the air stream detones...