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SHARED DETONING ROLL

IP.com Disclosure Number: IPCOM000027294D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 75K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a cleaning system comprised of two electrostatic cleaning brushes and a single commonly shared detoning roll. In an exemplary cleaning system configuration a first brush and a second brush are in contact with a photoreceptor member and are rotated against or countercurrent to the photoreceptor process direction. The ends of the brushes are separated by a distance x and the detoning roll of a diameter x+y is positioned between the brushes but away from the photoreceptor surface to simultaneously contact and clean the brush ends.

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XEROX DISCLOSURE JOURNAL

SHARED DETONING ROLL

Dennis G. Gerbasi Karen H. Kuntz Christopher W. Curry

Proposed Classification

U.S. C1.355/301 Int. C1. G03g 21/00

Disclosed is a cleaning system comprised of two electrostatic cleaning brushes and a single commonly shared detoning roll. In an exemplary cleaning system configuration a first brush and a second brush are in contact with a photoreceptor member and are rotated against or countercurrent to the photoreceptor process direction. The ends of the brushes are separated by a distance x and the detoning roll of a diameter x+y is positioned between the brushes but away from the photoreceptor surface to simultaneously contact and clean the brush ends.

A scraper blade is used and is positioned against the outboard side (distal to the photoreceptor) of the detoning roll. The detoning roll is preferably rotated in the same countercurrent direction as the brushes. The detoning roll is optionally adapted via commutation to provide dual polarity whereby the roll is capable of removing correct sign and wrong sign toner from the brushes. Biases of about +500 and about -500 volts would remove both positive and negative toner from the cleaning brushes. The cleaning system may also optionally employ an auger for removal of toner and other materials that are recovered from the cleaning brushes.

Advantages include: unit manufacturing cost reductiodsavings; internal machine space reductiodsavings; increased reliability as a result...