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ELIMINATING WEIGHING ERROR CAUSED BY ELECTROSTATIC ATTRACTION

IP.com Disclosure Number: IPCOM000022897D
Original Publication Date: 1976-Apr-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 171K

Publishing Venue

Xerox Disclosure Journal

Abstract

In carrying out experimental xerographic work, weight measurements in the order 1/1000 of a gram may be made of experimental samples of powder (such as toner) , thin films, or even paper, The samples being weighed are often electrically charged. The charge on the samples can cause an electrical attraction between the sample and various parts of the balance used for weighing the sample. This electrical force is substantial in relation to the sample weight and can result in erroneous data. This error can be eliminated by placing the sample in a conductive container during weighing0 The conductive weighing container captures the electric field from the sample, and the field can not act on any surface external to the container. When the container is placed on the balance, it contacts the metal parts of the balance. Thus, no electric field exists between the container or its contents and the balance parts.

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XEROX DISCLOSURE JOURNAL

ELIMINATING WEIGHING ERROR Proposed Classification
CAUSED BY ELECTROSTATIC U.S. Cl. 177
ATTRACTION mt. Cl. GOig

Dan Donalies

In carrying out experimental xerographic work, weight

measurements in the order 1/1000 of a gram may be made
of experimental samples of powder (such as toner) , thin
films, or even paper, The samples being weighed are
often electrically charged. The charge on the samples
can cause an electrical attraction between the sample

and various parts of the balance used for weighing the
sample. This electrical force is substantial in relation
to the sample weight and can result in erroneous data.
This error can be eliminated by placing the sample in a
conductive container during weighing

                           0 The conductive
weighing container captures the electric field from the
sample, and the field can not act on any surface external
to the container. When the container is placed on the
balance, it contacts the metal parts of the balance.
Thus, no electric field exists between the container or
its contents and the balance parts.

Volume 1 Nunther 4 April 1976 35

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36 XEROX DISCLOSURE JOURNAL

Volume 1 Number 4 April 1976

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