Heizsystem zum thermischen Fixieren einer Abbildung auf einem papierförmigen Medium, ein damit zusammenhängendes Verfahren und eine entsprechende Sicherheitseinrichtung

摘要

Method and apparatus are provided for minimizing delay in the operation of a safety device in a device for thermally fixing an image to a paper medium. A safety device, such as a thermostat, is set to deactivate a heater unit if the temperature of the heater unit exceeds a first temperature value. If the temperature of the thermal unit exceeds a second temperature value lower than the first temperature value, a heat exhausting device, such as a fan, is turned off. Shutting off the heat exhausting device stops cooling of the heater, thus decreasing the time elapsed before the safety device can detect the first temperature value.