Browse Prior Art Database

ACOUSTICAL ELECTROSTATIC BRUSH CLEANER ASSIST

IP.com Disclosure Number: IPCOM000026720D
Original Publication Date: 1993-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 111K

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

FIG. I

XEROX DISCLOSUFE JOURNAL, - Vol. 18, No. 3 May/June 1993 249

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ACOUSTICAL ELECTROSTATIC BRUSH 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 fi Pressing acoustical horn 2, while vibrating at frequency f, against photoreceptor belt 4 using rollers 14
and 15 for any required tension, causes discharged toner particles 8 to dislodge from photoreceptor belt 4. A rotating electrostatic brush 10 subsequently picks up dislodged toner particles 12, for transport to a filtering system (not shown). Acoustical horn 2 reduces the requi...