IMAGE FORMATION APPARATUS COMPRISING DEVICE FOR FIXING DEVELOPER ON RECORDING MEDIUM BY INDUCTION HEATING OF HEATING ROLLER

摘要

A control unit (91) decides that the device is normal if an error signal produced by a drive control (66) is low. If an error signal produced by a drive control (66) is high, on the other hand, the control unit measures the duration in which the error signal keeps high, rather than deciding immediately, and ignores the high error signal by considering it as a temporary change in voltage unless the duration exceeds a predetermined limit or error timer value (T). If the duration exceeds the error timer value (T), the control unit produces a signal (SC) for informing a serviceman of an abnormal voltage.