Image fixing device having heat recycling means

Details Image fixing device having heat recycling means Image fixing device having heat recycling means

1991-09-03

1992-06-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

165 86, 165185, G03G 1520

Patent

active

051191423

ABSTRACT:
A fixing device fixes a toner image to a receiving sheet, especially to a receiving sheet having a heat softenable thermoplastic layer. The device has an endless belt which moves from a pressure nip through a cooling path away from the nip and then returns to the pressure nip. A heat exchanging roller is positioned between the portions of the path of the belt to subtract heat from the belt as it moves away from the nip and return that heat to the belt as it again approaches the nip. The heat exchanging roller has a thin conductive layer on an insulating core which thermally matches with the belt to increase the thermal efficiency of the fixing device.

REFERENCES:
patent: 3356831 (1967-12-01), Andrus et al.
patent: 3810735 (1974-05-01), Moser

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