Patent ID: 6259073
Filing Date: 2001-07-10
Classification: G03G,G05D

Abstract:
A temperature control device for controlling a temperature of a heat roller comprising a roller body in the form of a cylindrical shape having a peripheral surface, and a heat generating sheet wound around the peripheral surface of the roller body, the heat generating sheet generating heat when supplied with an electric current from a power source through a circuit, the temperature control device comprising:a sensor that detects a temperature of the heat roller, and outputs a detection signal indicating the temperature;a switch that switches ON/OFF of the circuit, wherein when the circuit is ON, the heat generating sheet is supplied with the electric current from the power source and generates heat;a controller that outputs a control signal to the switch based on the detection signal, wherein the switch performs ON/OFF actions of the circuit in response to the control signal to thereby control generation of heat in the generating sheet;a first transmitting unit that uses a non-electrical conductive line for transmission;a second transmitting unit that transmits the control signal from the controller to the switch using a non-electrically conductive line; anda transformer that has a primary side and a secondary side, the transformer having a first coil at the primary side and a second coil at the secondary side, the first coil being connected to the power source, wherein the second coil provides electrical power to the controller.