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Brush Cleaner With Electrostatic Precipitator

IP.com Disclosure Number: IPCOM000079101D
Original Publication Date: 1973-May-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Roller, DC: AUTHOR [+2]

Abstract

Residual toner 10 is cleaned from photoconductor 11 by rapidly rotating brush 12. Housing 13 forms an air path 14 for the draft created by brush 12. Path 14 terminates in a fibrous filter 15. The air drawn into housing 13 by brush 12 causes a slight vacuum to be present at sealing points 16 and 17 of the housing 13, to prevent loose toner from blowing about. Air path 14 passes a substantial portion of the periphery of rotating conductive cylinder 18 that is charged to a high-negative potential. Toner particles flicked from the brush 12 by edge 19 into the air stream are precipitated onto the surface of cylinder 18. Rotation of the cylinder 18 causes its surface to be continually cleaned by scraper blade 20. Toner scraped from cylinder 18 falls into sump 21 where it is removed by auger 22 for reuse.

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Brush Cleaner With Electrostatic Precipitator

Residual toner 10 is cleaned from photoconductor 11 by rapidly rotating brush 12. Housing 13 forms an air path 14 for the draft created by brush 12. Path 14 terminates in a fibrous filter 15. The air drawn into housing 13 by brush 12 causes a slight vacuum to be present at sealing points 16 and 17 of the housing 13, to prevent loose toner from blowing about. Air path 14 passes a substantial portion of the periphery of rotating conductive cylinder 18 that is charged to a high-negative potential. Toner particles flicked from the brush 12 by edge 19 into the air stream are precipitated onto the surface of cylinder 18. Rotation of the cylinder 18 causes its surface to be continually cleaned by scraper blade 20. Toner scraped from cylinder 18 falls into sump 21 where it is removed by auger 22 for reuse. By removing a large percentage of the toner particles prior to filter 15, the effective life of filter 15 is significantly extended.

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