Patent ID: 6870140
Filing Date: 2005-03-22
Classification: G03G,H05B

Abstract:
1. A universal fuser heating apparatus capable of receiving an input AC line voltage falling within at least one low AC line voltage range or a high AC line voltage range, said universal fuser heating apparatus comprising: a first resistive heating element; a second resistive heating element; and structure for coupling said first and second resistive heating elements in series or in parallel in dependence upon whether the fuser heeling apparatus will receive an input AC line voltage falling within said at least one low AC line voltage range or said high AC line voltage range; a switching device associated with one of said first and second resistive heating elements; and a processor coupled to said switching device for activating said switching device in accordance with an integer half-cycle control scheme, wherein at least two different power levels are available via the integer half-cycle control scheme.