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Air Wedge and Air Entry

IP.com Disclosure Number: IPCOM000087440D
Original Publication Date: 1977-Jan-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Sanders, K: AUTHOR

Abstract

The brush-cleaning apparatus in the figure removes toner from an electro-photographic drum 10. The apparatus comprises a brush member 12 constantly rotating in a direction opposite the drum rotation. A housing 14 substantially surrounds the brush member and an opening 16 is provided for entrance of air near the point of brush engagement with drum 10 so that the air entering at opening 16 carries the toner in an air stream that is separated from brush 12 by an air wedge member 18. Air also enters at point 20 on the opposite side of brush 12 and forms another air path to carry away toner to air-flow channel 22, where it is exhausted.

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Air Wedge and Air Entry

The brush-cleaning apparatus in the figure removes toner from an electro- photographic drum 10. The apparatus comprises a brush member 12 constantly rotating in a direction opposite the drum rotation. A housing 14 substantially surrounds the brush member and an opening 16 is provided for entrance of air near the point of brush engagement with drum 10 so that the air entering at opening 16 carries the toner in an air stream that is separated from brush 12 by an air wedge member 18. Air also enters at point 20 on the opposite side of brush 12 and forms another air path to carry away toner to air-flow channel 22, where it is exhausted.

The key factor in cleaning is to separate the air carrying the toner from the brush so that the toner cannot come into contact with the brush again.

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