Quick heat roller
AssigneesDaiken Chemical Co., Ltd., Takao Kawamura
InventorsTakao Kawamura, Tsuyoshi Nishi
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Abstract
A temperature-controlled quick heat roller having an electrical resistance heater sheet provided on an inner surface of the cylinder. The electrical resistance heater is made of at least a high-temperature-coefficient resistance layer so that when the high-temperature-coefficient resistance layer is heated by an electric current, the cylinder is set to a prescribed fixing temperature. Also, the heat roller has a property in which heating electrical power drops as the temperature thereof rises.
Claims6
A temperature-controlled quick heat roller, said heat roller comprising an electrical resistance heater sheet provided on an inner surface of a cylinder, and said electrical resistance heater sheet is comprised of at least a high-temperature-coefficient resistance layer;
- wherein said high-temperature-coefficient resistance layer is heated by electric current, thus setting said cylinder to a prescribed fixing temperature, so that said heat roller has a property in which heating electrical power drops as temperature thereof rises.
A self-temperature controlled quick heat roller, said heat roller comprising an electrical resistance heater sheet provided on an inner surface of a cylinder, and said electrical resistance heater sheet is comprised of at least a resistive heating layer comprising a high-temperature-coefficient resistance layer and a low-temperature-coefficient resistance layer, wherein said high- and low-temperature-coefficient resistance layers are heated by electric current, thus setting said cylinder to a prescribed fixing temperature, so that said heat roller has a self-temperature controlled property in which heating electrical power drops as temperature thereof rises.
Dependencies are inferred from the claim text.