Browse Prior Art Database

DUAL BRUSH BIAS TRANSFER ROLL CLEANER

IP.com Disclosure Number: IPCOM000026691D
Original Publication Date: 1993-Apr-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 111K

Publishing Venue

Xerox Disclosure Journal

Abstract

Current brush bias transfer roll cleaners in xerographic printing machines consist of a single rotating brush and an air system. The rotating brush removes toner from the bias transfer roll while the air removes toner from the brush fibers. A bias transfer roll cleaning configuration of this type functions effectively with a disadvantage of being large in size.

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XEROX DISCLOSURE JOURNAL

DUAL BRUSH BIAS TRANSFER ROLL CLEANER U.S. C1.3551296 Gregory J. Mancine

Proposed Classification

Int. C1. G03g 21/00

FlG. I

XEROX DISCLOSURE JOURNAL - Vol. 18, No. 2 MarcMAprill993 173

[This page contains 1 picture or other non-text object]

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DUAL BRUSH BIAS TRANSFER ROLL CLEANER (Cont'd)

Current brush bias transfer roll cleaners in xerographic printing machines consist of a single rotating brush and an air system. The rotating brush removes toner from the bias transfer roll while the air removes toner from the brush fibers. A bias transfer roll cleaning configuration of this type functions effectively with a disadvantage of being large in size.

Disclosed and shown in Figures 1 and 2 is a dual brush bias transfer roll cleaning system that is more compact and has an improved cleaning capability. The disclosed cleaning system consists of two small brushes 4 and 5 that rotate in opposite directions to each other in order to effectively remove toner from the surface of bias transfer roll 8 which is in contact with photoreceptor belt 9 tensioned by guide rolls 2 and 3 and paper fed through paper guide 15 from a paper tray (not shown). Holes 10 positioned in a series inside housing 12 act as a flicker to remove toner from the fibers of brushes 4 and 5. Air is drawn through flicker holes 10 to catch toner flicked off the fibers of brushes 4 and 5. The air then transports the flicked fibers through hose 11 to a filter bag (not shown).

Flicker holes 10, shown in Figure 2, are arranged in a series of three holes in order to disturb more than o...