Browse Prior Art Database

PLASMA AIR KNIFE CLEANER

IP.com Disclosure Number: IPCOM000026423D
Original Publication Date: 1991-Dec-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

A high velocity ionized plasma air knife is disclosed for use in cleaning residual toner from photoreceptors of electrophotographic printing and copying machines. A flow of ionized air is directed to the surface of the photoreceptor to neutralize any charge on residual toner particles that remains on the photoreceptor surface after image transfer. A nozzle is used to direct the ionic plasma flow to the photoreceptor surface. A potential applied to the nozzle ionizes the air flow and creates the plasma. The plasma air knife mechanically disrupts residual toner images and toner deposits on the photoreceptor by a high velocity air flow. Neutralization of the particles also occurs by attractive charge pairing. The air flow alone may be used as the cleaning mechanism when controlled by ducting. When conventional cleaning systems are employed in conjunction with the plasma air knife, cleaning efficiency is greatly enhanced. A related ionized air cleaning device is also disclosed in U.S. Patent 3,668,008, assigned to Xerox Corporation, issued June 6,1972.

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XEROX DISCLOSURE JOURNAL

PLASMA AIR KNIFE CLEANER

Proposed Oscar G. Hauser U.S. C1.355/303 Classification

Int. C1. G03g 21/00

A high velocity ionized plasma air knife is disclosed for use in cleaning residual toner from photoreceptors of electrophotographic printing and copying machines. A flow of ionized air is directed to the surface of the photoreceptor to neutralize any charge on residual toner particles that remains on the photoreceptor surface after image transfer. A nozzle is used to direct the ionic plasma flow to the photoreceptor surface. A potential applied to the nozzle ionizes the air flow and creates the plasma. The plasma air knife mechanically disrupts residual toner images and toner deposits on the photoreceptor by a high velocity air flow. Neutralization of the particles also occurs by attractive charge pairing. The air flow alone may be used as the cleaning mechanism when controlled by ducting. When conventional cleaning systems are employed in conjunction with the plasma air knife, cleaning efficiency is greatly enhanced. A related ionized air cleaning device is also disclosed in U.S. Patent 3,668,008, assigned to Xerox Corporation, issued June 6,1972.

XEROX DISCLOSURE JOURNAL - Vol16 No 6 November/December 1991 369

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370 XEROX DISCLOSURE JOURNAL - Vol16 No 6 NovembedDecember 1991

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