Power supply unit for a fusing roller of an...

Details Power supply unit for a fusing roller of an... Power supply unit for a fusing roller of an...

2005-05-24

2005-05-24

Beatty, Robert (Department: 2852)

Electrophotography

Machine operation

Having power supply

C219S216000, C219S541000, C399S330000

Reexamination Certificate

active

06898390

ABSTRACT:
A power supply unit for a fusing roller of an electrophotographic image forming apparatus, which is electrically connected to a heat-generating portion for generating heat to raise the temperature of the fusing roller to an appropriate level at which a toner image is fused and for transmitting electric current from an external power source to the heat-generating portion, includes: a connecting portion installed at a center of each of two end caps fit around ends of the fusing roller and electrically connected to the heat-generating portion; a holder connected to the connecting portion, the holder installed in a frame, the frame supporting or mounting the fusing roller, and an elastic unit for providing elastic force to make the holder elastically contact the connecting portion. The power supply unit provides improved durability and operating safety under electrical and mechanical stresses caused by current, residual heat and thermal impacts.

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