Patent ID: 6665504
Filing Date: 2003-12-16
Classification: G03G

Abstract:
A fusing device of an electrophotographic image forming apparatus comprising:a fusing roller comprising: a tubular internal pipe sealed to maintain a predetermined internal pressure, and having an inner space to accommodate a predetermined amount of a working fluid, a heater installed to wrap the internal pipe to generate heat, and a cylindrical roller installed to wrap the heater; a power supply unit having an electrode electrically connected to the heater to supply external power to the heater; end caps installed at both ends of the cylindrical roller, each having a large-diameter portion in which the electrode of the power supply electrically connected to the power supply unit is installed, and a small-diameter portion fittingly fixed to corresponding end of the cylindrical roller; and a locking unit connecting the small-diameter portion to the corresponding end of the cylindrical roller.