Browse Prior Art Database

TONER EMISSION CONTROL CONCEPT

IP.com Disclosure Number: IPCOM000022927D
Original Publication Date: 1976-Apr-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 275K

Publishing Venue

Xerox Disclosure Journal

Abstract

A toner emission controller for suppressing unwanted emissions of toner from a toner handling subsystem (i~e~, a cleaning system or a development system) of an electro- statographic processor includes a constant velocity air moving unit for drawing airborne toner particles within the subsystem housing away from the imaging surface and toward a remote exhaust port along a path including a plurality of staggered and spaced apart, electrically conductive plates in series with a fibrous filtering element

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

TONER EMISSION CONTROL CONCEPT
ProposedJohn T, Bickmore Classification
tLS. Cl,. 335/3DD
mt.. Ci, HOin 55/00

A toner emission controller for suppressing unwanted
emissions of toner from a toner handling subsystem (i~e~,
a cleaning system or a development system) of an electro-
statographic processor includes a constant velocity air
moving unit for drawing airborne toner particles within
the subsystem housing away from the imaging surface and
toward a remote exhaust port along a path including a
plurality of staggered and spaced apart, electrically
conductive plates in series with a fibrous filtering
element

Referring to the drawing, there is a magnetic brush
development system 11 for developing latent electro~
static images carried by an imaging surface 12 on a
rotatably driven drum l3~ The development system 11
is contained within a housing 14 which has an exhaust

port 15 at a point remote from the imaging surface 12,
An exhaust fan 17 is coupled to the exhaust port 15 which,

Volume 1 Number 4 April 1976 73

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TONER EMISSION CONTROL CONCEPT (Cont~d)

in turn, is constricted as at 18, whereby a slight negative
pressure is maintained on the housing 14 to draw free toner
particles away from the imaging surface 12 along a path
including staggered precipitator plates 21 and 22 followed
by a fibrous filter 23. Precipitator plates 21 and 22 are
electrically insulated from the housing 14 by insulators 24...