Browse Prior Art Database

TONER FILTERING AND CONTAINMENT SYSTEM

IP.com Disclosure Number: IPCOM000023184D
Original Publication Date: 1976-Dec-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 225K

Publishing Venue

Xerox Disclosure Journal

Abstract

A multi~stage toner filter (1) with filter elements 3~6 selected according to particle size distribution, The filter elements would be tapered elements geometrically designed to obtain uniform pressure distribution across each filtering element. The filter elements would be spaced along a path in a container (2) in an inter~ digitally spaced orientation so as to allow air flow to end by~-pass the filtering elements in a convolute path as each element becomes clogged with toner. Assuming a mean particle size of 15 microns, the inlet filter element (3) could be designed to filter coarse particles of greater than 25 microns, the first stage element (4) would filter particles between 15 and 25 microns, The second stage elements (5) would filter 5-~l5micron particles and the outlet stage (6) would filter particles of less than 5 microns, This design is intended to provide improved filter bag life and capacity as compared to a conventional filter bag associated with a conventional xerographic brush cleaning system,

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XEROX DISCLOSURE JOURNAL

TONER FILTERING AND CONThINMENT
SYSTEM
Eugene F, Horak
Karl B. Ayash

Proposed Classification
U.S. Cl. 355/15
mt. CL G03g 21/00

A multi~stage toner filter (1) with filter elements 3~6
selected according to particle size distribution, The
filter elements would be tapered elements geometrically
designed to obtain uniform pressure distribution across
each filtering element. The filter elements would be
spaced along a path in a container (2) in an inter~
digitally spaced orientation so as to allow air flow
to end by~-pass the filtering elements in a convolute
path as each element becomes clogged with toner.
Assuming a mean particle size of 15 microns, the inlet
filter element (3) could be designed to filter coarse
particles of greater than 25 microns, the first stage
element (4) would filter particles between 15 and 25
microns, The second stage elements (5) would filter
5-~l5micron particles and the outlet stage (6) would
filter particles of less than 5 microns, This design
is intended to provide improved filter bag life and
capacity as compared to a conventional filter bag
associated with a conventional xerographic brush
cleaning system,

71Volume 1 Numbers 11/12 November/December 1976

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Page 2 of 2

72 XEROX DISCLOSURE JOURNAL

Volume 1 Numbers 11/12 November/December 1976

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