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TONER FUSION USING R F FIELDS AND UTILIZING CURIE TEMPERATURE OF TONER ADDITIVE

IP.com Disclosure Number: IPCOM000023280D
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 190K

Publishing Venue

Xerox Disclosure Journal

Abstract

A toner suitable for fusing using radio frequency fields is disclosed. A ferromagnetic material having a.suitable Curie temperatute may be included in the toner. to give delirable tusing characteristics using radio frequency fields. With a -uriè temperature above the flow temperatur.e of the toner, a very rapid and complete fusion is possible without heating of. the paper. Ferromagnetic materials suitable for use utilizing Curie temperature have the advantage that they may be very rapidly heated while being self limiting as to the-maximum temperature reached as the ferromagnetic material does not ab-sorb the radig frequency energy and transform it into heat above the Curie temperature of the metal. When the Curie temperature is reached, the energy absorption ceaseg abruptly. Therefore, by selection of a material with a Curie temperature in the melting range of toner materials, it is possible to utilize these materials in totters.

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XEROX DISCLOSURE JOURNAL.

TONER FUSION .USXNG ReF. FIELDS Proposed Classification

~m~YTILIZI~(GC~RtETEMPzRATØRE U.S. Cl. 252/62.1
OFjivNEâ AtDIflvE . mt. Cl. G03g 9/00
JameS L. Eólmáñ

A toner suitable for fusing using radio frequency fields is
disclosed. A ferromagnetic material having a.suitable Curie
temperatute may be included in the toner. to give delirable
tusing characteristics using radio frequency fields. With a
~uriè temperature above the flow temperatur.e of the toner, a
very rapid and complete fusion is possible without heating of.
the paper. Ferromagnetic materials suitable for use utilizing
Curie temperature have the advantage that they may be very
rapidly heated while being self limiting as to the~maximum
temperature reached as the ferromagnetic material does not ab-
sorb the radig frequency energy and transform it into heat
above the Curie temperature of the metal. When the Curie
temperature is reached, the energy absorption ceaseg abruptly.
Therefore, by selection of a material with a Curie temperature
in the melting range of toner materials, it is possible to
utilize these materials in totters.

Volume 2 Number 2 March/4pril 1977 . 49

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                XEROX DISCLOSURE JOURNAL
50 Volume 2 Number 2 March/April 1977

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