Browse Prior Art Database

FLOATING DIAPHRAGM VACUUM SHOE

IP.com Disclosure Number: IPCOM000023491D
Original Publication Date: 1977-Dec-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 371K

Publishing Venue

Xerox Disclosure Journal

Abstract

A vacuum cleaning shoe 1 for removing residual mater-a1 is proposed for photoreceptor surface 2 cleaning based on the use of a floating diaphragm structure 3. This arrangement ac-curately controls and minimizes the passage of air into the port 4. Working at small air gaps between the diaphragm 3 and the photoreceptor surface 1, an air bearing of uniform thick-ness is established between the diaphragm and the surface.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

FLOATING DIAPHRAGM VACUUM SHOE
C. Hull
R. lannettone
H. Till

Proposed Classification
U.S. Cl, 355/15
Int, Cl, G03g 21/00

*1

A vacuum cleaning shoe 1 for removing residual mater~a1 is
proposed for photoreceptor surface 2 cleaning based on the use
of a floating diaphragm structure 3. This arrangement ac-
curately controls and minimizes the passage of air into the
port 4. Working at small air gaps between the diaphragm 3 and
the photoreceptor surface 1, an air bearing of uniform thick-
ness is established between the diaphragm and the surface.

It is proposed to oscillate the diaphragm 3 by a suitable
means, Oscillation of the diaphragm 3 should aid in over-
coming adhesion forces holding the residual toner on the
photoreceptor surface 2. Preferably, the oscillation should
be in the ultrasonic range.

~1

6

4

FiG. / FiG. 2

Volume 2 Number 6 November/December 1977 117

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

Page 2 of 2

FLOATING DIAPHRAGM VACUUM SHOE (Cont~d)

Alternatively, it is proposed to provide a positive or nega-
tive bias pressure to the backside of the diaphragm 3 in order
to change its cross-sectional shape. The bias pressure can be
controlled at a fixed reference to atmospheric pressure or it
can be made proportional to the vacuum flow through the
cleaner port 4.

The bias pressure on the back of the diaphragm 3 is provided
through port 5 which is connected to the chamber 6 arranged
behind the diaphragm. Figure 2 shows the expected shapes of
th...