Browse Prior Art Database

RETRACTION ACTIVATED CLEANER BRUSH ROTATION CLUTCHES

IP.com Disclosure Number: IPCOM000027435D
Original Publication Date: 1996-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 70K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is an actuating cam on a retraction camshaft that replaces solenoids on a drive clutch assembly for dual electrostatic brush cleaners. The cam actuates the clutch and reliably stops brush rotation without electrical signals when cleaner housings retract from a photoreceptor surface. The accompanying figure illustrates a cleaner drive system 10 suitable for an image-on image, multi-pass electrophotographic printing machine. Drive system 10 uses a machine drive 12, and three clutches 14, 16, and 18. Clutch 14 is a cam clutch made active by a first camshaft 24 and a second camshaft 26. Camshaft 24 retracts a first cleaner 20 while camshaft 26 retracts a second cleaner 22. A drive 16 rotates an electrostatic brush (not shown) in cleaner 20. Similarly, drive clutch 18 rotates an electrostatic brush (not shown) contained in cleaner 22. A coupling 30 transmits rotational motion to the drive system 10.

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XEROX DISCLOSURE JOURNAL

RETRACTION ACTIVATED CLEANER BRUSH ROTATION CLUTCHES Bruce E. Thayer
Dennis G. Gerbasi

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

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XEROX DISCLOSURE JOURNAL - Vol. 21, No. 6 NovemberDecember 1996 379

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RETRACTION ACTIVATED CLEANER BRUSH ROTATION CLUTCHES (CONT'D)

Proposed is an actuating cam on a retraction camshaft that replaces solenoids on a drive clutch assembly for dual electrostatic brush cleaners. The cam actuates the clutch and reliably stops brush rotation without electrical signals when cleaner housings retract from a photoreceptor surface. The accompanying figure illustrates a cleaner drive system 10 suitable for an image-on image, multi-pass electrophotographic printing machine. Drive system 10 uses a machine drive 12, and three clutches 14, 16, and 18. Clutch 14 is a cam clutch made active by a first camshaft 24 and a second camshaft 26. Camshaft 24 retracts a first cleaner 20 while camshaft 26 retracts a second cleaner 22. A drive 16 rotates an electrostatic brush (not shown) in cleaner 20. Similarly, drive clutch 18 rotates an electrostatic brush (not shown) contained in cleaner 22. A coupling 30 transmits rotational motion to the drive system 10.

RELATED REFERENCES

U.S. Patent No. 5,260 754 to Yano et aL discloses a retractable brush cleaning device that is incorporated into an image forming apparatus for removing toner rema...