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A CLEANING SYSTEM

IP.com Disclosure Number: IPCOM000023623D
Original Publication Date: 1978-Aug-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 390K

Publishing Venue

Xerox Disclosure Journal

Abstract

A cleaning apparatus is frequently employed in an electro-photographic printing machine to remove residual toner par-tides from photoconductive surface 12 of drum 10. As shown in Figure 1, the cleaning mechanism 56 includes a rotatable brush 58. As brush 58 rotates in the direction of arrow 64, it dislodges any residual toner particles adhering to photocon-ductive surface 12. Air flow separates the toner particles from brush 58 and removes them from chamber 60 of housing 62- Vacuum duct 66 is connected to outlet port 68 of housing 62, The particles removed from brush 58 flow in the air stream in the direction of arrow 70 through duct 66. The opening at the opposite end of duct 66 is in communication with inlet port 70 of filter box 72. The lowermost portion 74 of duct 66 is made

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

A CLEANING SYSTEM
R. E~ Hewitt

Proposed Classification
U.S. Cl, 355/3
mt. Cl. G03g 15/80

A cleaning apparatus is frequently employed in an electro-
photographic printing machine to remove residual toner par~
tides from photoconductive surface 12 of drum 10. As shown
in Figure 1, the cleaning mechanism 56 includes a rotatable
brush 58. As brush 58 rotates in the direction of arrow 64, it
dislodges any residual toner particles adhering to photocon~
ductive surface 12. Air flow separates the toner particles
from brush 58 and removes them from chamber 60 of housing 62~
Vacuum duct 66 is connected to outlet port 68 of housing 62,
The particles removed from brush 58 flow in the air stream in
the direction of arrow 70 through duct 66. The opening at the
opposite end of duct 66 is in communication with inlet port 70
of filter box 72. The lowermost portion 74 of duct 66 is made

Volume 3 Number 4 July/August 1978 253

FiG. 2

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

Page 2 of 2

A CLEANING SYSTEM (Cont'd)

from an air pervious material. This peralits air to flow
therethrough in the direction of arrow 76. Filter
box 72
defines a chamber 78 divided by filter 80 into compartments
78a and 78b. The filter pores are smaller than that of the
toner particles. Thus, the toner particles passing through
duct 66 are trapped in chamber 78b and stored therein for
subsequent removal by the machine operator. However, air
travels through filter 80 in the direction of arrow 82...