Browse Prior Art Database

ACOUSTICAL VACUUM CLEANER ASSIST

IP.com Disclosure Number: IPCOM000026721D
Original Publication Date: 1993-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 89K

Publishing Venue

Xerox Disclosure Journal

Abstract

An apparatus for cleaning toner off photoreceptors in electrostatic reproduction machines is disclosed. Typically, after an image is transferred from a photoreceptor to paper, a residual amount of toner is left on the photoreceptor. One method to achieve copies with increased copy quality is to minimize the amount of residual toner left on the photoreceptor after cleaning.

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XEROX DISCLOSURE JOURNAL

ACOUSTICAL VACUUM CLEANER Proposed Classification ASSIST U.S. C1.355/015 Gregore J. Mancine Int. C1. G03g 21/00

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XEROX DISCLOSURE JOURNAL - Vol. 18, No. 3 May/June 1993 251

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ACOUSTICAL VACUUM CLEANER ASSIST (Cont'd)

An apparatus for cleaning toner off photoreceptors in electrostatic reproduction machines is disclosed. Typically, after an image is transferred from a photoreceptor to paper, a residual amount of toner is left on the photoreceptor. One method to achieve copies with increased copy quality is to minimize the amount of residual toner left on the photoreceptor after cleaning.

Figure 1 shows improved cleaning apparatus 5 within a cleaning zone of an electrostatic reproduction machine. Initially, charged toner particles 8 entering the zone are discharged to zero using pre-clean corona generator 3. The opposite polarity charge of the corona reduces electrostatic forces holding toner particles 8 to photoreceptor belt 4 operating in the direction indicated by arrow 7. Acoustical horn 2 mounted on the back side of photoreceptor belt 4 is driven by A.C. source 6 operating at frequency f. Pressing acoustical horn 2, while vibrating at frequency f, against photoreceptor belt 4 using rollers 14
and 15 for any required tension, causes dischared toner particles 8 to dislodge from photoreceptor belt 4. High velocity and pressure vacuum 10
subsequently picks...