Electrophotography – Image formation – Fixing
Patent
1995-11-28
1997-08-19
Grimley, Arthur T.
Electrophotography
Image formation
Fixing
219216, 219470, G03G 1520
Patent
active
056598670
ABSTRACT:
A fuser roller for use in an electrophotographic process includes a hollow cylinder that is constructed of a ceramic material having a high thermal conductivity and exhibiting a wall thickness that is thin in comparison to the radius of the cylinder. Plural resistive conductors are positioned on an external surface of the cylinder. A coating is overlaid on the resistive conductors and the cylinder and forms a continuous, smooth, outer surface for the fuser roller. A first conductive ring is positioned about one end of the cylinder and a second conductive ring is positioned about a second end of the cylinder. Both the first ring and second ring connect to each of the resistive conductors. A circuit is provided for applying a voltage between the first conductive ring and the second conductive ring to cause a current flow through the resistive conductors and a heating of the hollow cylinder so as to bring its temperature up to a required fusing temperature.
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Chen Sophia S.
Grimley Arthur T.
Hewlett--Packard Company
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