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John A Martstiller

Frederick G Grise

Paul H Bodensiek

An electrical heater including a semi-conductor pattern (e.g., colloidal graphite ink) printed on a substrate. A conductive ink (e.g., a silver ink) is deposited on the semi-conductor pattern. The conductive ink migrates into the semi-conductor material, provides a superior electrical contact between the conductor (e.g., the silver ink) and the underlying semi-conductor material (e.g., the semi-conductor graphite ink), and essentially eliminates interface resistance. In some embodiments, the semi-conductor pattern is printed on one side of a woven cloth substrate and the conductive ink is printed on the other side.

Electric resistance heater

An electrical heater including a semi-conductor pattern (e.g., colloidal graphite ink) printed on a substrate. A conductive ink (e.g., a silver ink) is dposited on the semi-conductor pattern. The conductive ink migrates into the semi-conductor material, provides a superior electrical contact between the conductor (e.g., the silver ink) and the underlying semi-conductor material (e.g., the semi-conductor graphite ink), and essentially eliminates interface resistance. In some embodiments, the semi-conductor pattern is printed on one side of a woven cloth substrate and the conductive ink is printed on the other side.

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Marston Mills, MA, United States of America

John A Martstiller