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ADHERING AND RELEASING DOCUMENTS FROM BELTS

IP.com Disclosure Number: IPCOM000023531D
Original Publication Date: 1978-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 288K

Publishing Venue

Xerox Disclosure Journal

Abstract

A means of electrostatically adhering documents to a document transport and imaging belt, and an unloading operation. The adhesion is generated by triboelectric charging of the doc-urnent, and then the charge on the document is used as a means of removing the document from the belt. The document is charged via contact triboelectrification with a material which develops a high negative charge with respect to metal. Kynar ADS, made by the Pennwal division of Sybron Corporation, King of Prussia, Pennsylvania, is such a material. The document belt would be. coated with this material. The document will charge positively with respect to the belt coating if the belt is initially frictionally slid relative to the document, and the resultant electrostatic force will tack the document to the belt to prevent subsequent loss of control of the docu-ment. Although paper varies in its charge acceptance, it very rarely changes negative with respect to metals, and then only to a slight degree. Thus, paper documents should always be positive with respect to the highly negative Kynar material coating, and a dependable tacking force will result.

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XEROX DISCLOSURE JOURNAL

ADHERING AND RELEASING DOCUMENTS Proposed Classification
FROM BELTS U.S. Cl. 271/8
Arthur C. Martellock mt. Cl. 365h 7/00

A means of electrostatically adhering documents to a document
transport and imaging belt, and an unloading operation. The
adhesion is generated by triboelectric charging of the doc-
urnent, and then the charge on the document is used as a means
of removing the document from the belt. The document is
charged via contact triboelectrification with a material which
develops a high negative charge with respect to metal. Kynar
ADS, made by the Pennwal division of Sybron Corporation, King
of Prussia, Pennsylvania, is such a material. The document
belt would be. coated with this material. The document will
charge positively with respect to the belt coating if the belt
is initially frictionally slid relative to the document, and
the resultant electrostatic force will tack the document to
the belt to prevent subsequent loss of control of the docu-
ment. Although paper varies in its charge acceptance, it very
rarely changes negative with respect to metals, and then only
to a slight degree. Thus, paper documents should always be
positive with respect to the highly negative Kynar material
coating, and a dependable tacking force will result.

At the unload station, the document and the belt are passed
over a wrap roll charged positively with respect to the
coating, so as to neutralize the tacking force, or, if
desired, so as to actually repel the document...