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PNEUMATICALLY MOUNTED ELECTROMETER FOR REPRODUCTION MACHINES

IP.com Disclosure Number: IPCOM000023454D
Original Publication Date: 1977-Oct-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 260K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrometer probe 10 is pneumatically biased above a test surface, such as photoreceptor 12, so as to maintain constant spacing therebetween. An air pressure supply 22 serves as a source of air pressure to passage 20 in mounting receptacle or shoe 14, as well as to upper and lower bellows 18 and l8- Arm 24 coupled to shoe 14 is pivoted about a point 16 connected, for example, to the reproduction machine frame (not shown), Any change in the spacing between lower portions of the shoe 14 and photorecep-'- tor 12 will result in a misbalance of pressure in the opposing bellows 18 and l8-. This will cause a change in length of lower bellows l8- in order to regain equilibrium, which, in turn, moves arm 24 a sufficient distance to maintain constant spacing of probe 10 from the photoreceptor 12 regardless of surface irregularities, etc.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

PNEUMATICALLY MOUNTED ELECTRO~
METER FOR REPRODUCTION MACHINES
Harvey Martin
Ronald P~ Sechak
Charles J~ Urso

An electrometer probe 10 is pneumatically biased above a test
surface, such as photoreceptor 12, so as to maintain constant
spacing therebetween.

Volume 2 Number 5 September/October 1977 1 fliU~

Proposed Classification
U,S, Cl, 355/3P.

Int, Cl. G03g 15/00

An air pressure supply 22 serves as a source of air pressure to
passage 20 in mounting receptacle or shoe 14, as well as to
upper and lower bellows 18 and l8~ Arm 24 coupled to shoe 14
is pivoted about a point 16 connected, for example, to the
reproduction machine frame (not shown), Any change in the
spacing between lower portions of the shoe 14 and photorecep~'~
tor 12 will result in a misbalance of pressure in the opposing
bellows 18 and l8~. This will cause a change in length of
lower bellows l8~ in order to regain equilibrium, which, in
turn, moves arm 24 a sufficient distance to maintain constant
spacing of probe 10 from the photoreceptor 12 regardless of
surface irregularities, etc.

Since the output reading of the electrometer may depend upon
the distance to the test surface, the above described concept
will insure consistent measurements.

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

Page 2 of 2

p

                   XEROX DISCLOSURE JOURNAL
102 Volume 2 Number 5 September/October 1977

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