Abstract: A temperature monitoring and control system interfaces with a host printing system through a communication medium to allow the host printing system to maintain control of heating lamps used to heat hot roll (fuser roll) to the required temperature. The temperature monitoring circuitry calibrates itself via the use of a black body calibration strip applied to the hot roller. The black body strip is used to determine the temperature and thus provide offset values for the hot roll cylinder, with respect to the thermal conductive coating. Temperature measurement according to the present invention utilizes infrared technology thermal sensors in conjunction with self-compensating controlling circuitry. The actual temperature of the coated surface is measured and compensated for by the use of Boolean algebraic logic as the hot roll cylinder is heated and during the course of the printing operation.

Abstract: A temperature monitoring and control system interfaces with a host printing system through a communication medium to allow the host printing system to maintain control of heating lamps used to heat hot roll (fuser roll) to the required temperature. The temperature monitoring circuitry calibrates itself via the use of a black body calibration strip applied to the hot roller. The black body strip is used to determine the temperature and thus provide offset values for the hot roll cylinder, with respect to the thermal conductive coating. Temperature measurement according to the present invention utilizes infrared technology thermal sensors in conjunction with self-compensating controlling circuitry. The actual temperature of the coated surface is measured and compensated for by the use of Boolean algebraic logic as the hot roll cylinder is heated and during the course of the printing operation.