Roller for fixing toner and method for manufacturing same

Details Roller for fixing toner and method for manufacturing same Roller for fixing toner and method for manufacturing same

1996-10-30

1999-08-03

Walberg, Teresa

Electric heating

Heating devices

Combined with diverse-type art device

399333, G03G 1520

Patent

active

059321253

ABSTRACT:
A direct heating type toner fixing roller for electrophotographic apparatuses is composed of a cylindrical tube made of a resin into which are mixed electrically conductive additives, preferably carbon fiber and carbon black powder. The resin is injection molded under defined conditions so that a reverse crown profile is formed. The roller of the invention is held in place at the toner fixing position by shafts, and the shafts themselves are supported by flanges. Electric power is supplied to the cylindrical tube to heat the tube to a predetermined thermal toner-fixing temperature through power supply terminals in contact with electrically conductive flanges. Alternately, the power supply terminals may make direct contact with peripheral parts of the cylindrical tube to heat the tube.

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