Heat fixing method

Details Heat fixing method Heat fixing method

1990-05-11

1992-05-19

Yuen, Henry C.

Heating

Processes of heating or heater operation

Continous strip, strand or web passed longitudinally through...

432 60, 432 59, 219216, 219469, F27B 928, G03G 1520

Patent

active

051143372

ABSTRACT:
A method of heat fixing a toner image comprises heat fixing a toner image on a recording material with a heating member fixed and supported and a pressurizing member which is opposed to, in pressure contact with said heating member and adapted to bring said recording material into pressure contact with said heat member through a film, wherein said toner image is formed of a toner, said toner comprises a binder resin and a colorant, said binder resin has a melt viscosity of 0.1 to 10.sup.7 centipoise at 140.degree. C. and the gradient (.theta.) of the straight line represented by the following formula comprising the reciprocal number (1/T) of the absolute temperature when the toner is melted by heating with the heating member and the logarithm (log .eta.) of the melt viscosity of the binder resin at this time is 10.sup.2 to 3.times.10.sup.3 :

REFERENCES:
patent: 3578797 (1971-05-01), Hughes et al.
patent: 4393804 (1983-07-01), Nygand et al.
patent: 4711549 (1987-12-01), Roodbeen
patent: 4780742 (1988-10-01), Takahashi et al.
patent: 4829931 (1989-05-01), Mogi
patent: 4888264 (1989-12-01), Matsumoto et al.
patent: 4957774 (1990-09-01), Doi et al.

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