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IMPROVED DEMAND-FEED TONER SING SYSTEM

IP.com Disclosure Number: IPCOM000024109D
Original Publication Date: 1979-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 175K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an improved, deman&feed toner dispensing system, which comprises a toner supply 2, a donor roll 3, a toner precharging device 4, and a magnetic brush roll 5. The donor roll 3 is made of a porous material, for example, a porous polyethylene filter 13. The interior space 6 of the donor roll 3 is in communication with a source of vacuum so that a layer of toner 7 may be retained on the surface of donor roll 3. The toner precharging device 4 may be a corotron, The magnetic

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XEROX DISCLOSURE JOURNAL

IMPROVED DEMAND-FEED TONER ~SING SYSTEM
her Snelling

Proposed Classification
U.S. CL 118/621

mt. CL B05c 5/02

/0

Disclosed is an improved, deman&feed toner dispensing system, which comprises a toner supply 2, a donor roll 3, a toner precharging device 4, and a magnetic brush

roll 5. The donor roll 3 is made of a porous material, for example, a porous polyethylene filter 13. The interior space 6 of the donor roll 3 is in communication with a source of vacuum so that a layer of toner 7 may be retained on the surface of donor roll 3. The toner precharging device 4 may be a corotron, The magnetic

brush 5 is provided with a source of biasing voltage 8 and grounded as is known in the art. An electrostatic latent image 9 on a photoreceptor 10, which is in turn supported on a conductive and grounded substrate 11, is developed by the toner on magnetic brush S into developed image 12.

7

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Volume 4 Number 5 September/October 1979 577

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