PTC ceramic heat roller for fixing toner image

Details PTC ceramic heat roller for fixing toner image PTC ceramic heat roller for fixing toner image

1991-08-12

1993-03-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

219216, 219469, 219471, G03G 1520

Patent

active

051913810

ABSTRACT:
A heating device, which can be used in the fixing unit of an image forming apparatus, such as an electrophotographic copying or printing machine, for fixing a toner image on a sheet of image transferring medium, includes a ceramic heat roller whose body is formed of a resistor material having positive temperature coefficient of resistance (PTC), capable of self-heating and self-regulating the temperature.

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