Heaters
AssigneeNGK Insulators, Ltd.
InventorYoshinobu Goto
Life of this patent
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Abstract
A heater is provided, including an insulating substrate and a heating resistance, wherein the temperature on the heating face is easily controlled without providing a separate temperature controlling member. The heating resistance includes at least one parallel-connected portion which includes a plurality of heat generating parts connected in parallel. At least one of the heat generating portions has a resistance adjusting means.
Claims14
A heater comprising an insulating substrate and a heating resistance provided in or on said substrate, said heating resistance comprising at least one parallel-connected portion comprising a plurality of heat generating parts connected in parallel with each other, and further comprising a retractable conductor in contact with at least one of said heat generating parts to allow for control of current flowing through said at least one of said heat generating parts.
Dependencies are inferred from the claim text.