HEATER, AND FIXATION DEVICE, IMAGE FORMATION DEVICE, AND HEATING DEVICE EQUIPPED WITH SAME

摘要

The purpose of the present invention is to provide a heater which is equipped with a plurality of cell patterns comprising resistive heating wiring connected in parallel and is capable of detecting burn-out of cell patterns, and to provide a fixation device, an image formation device, and a heating device equipped with the heater. This heater (1) is equipped with a base (11), resistive heating wiring (12) that is provided on the base (11), and burn-out detection wiring (13) that is provided on the base (11) while insulated from the resistive heating wiring (12). The resistive heating wiring (12) has multiple cell patterns (121) that have substantially the same heat-generating characteristics and are electrically connected in parallel to one another. The burn-out detection wiring (13) has a sensing section (131) with a temperature-dependent resistance value for each of the cell patterns (121) and is formed as a single body by electrically connecting the sensing sections (131) together. In the event of any one of the cell patterns (121) burning out, the resistance of the burn-out detection wiring (13) changes due to the change in temperature caused by the burn-out.