Heater, and image forming apparatus, heating method...

Details Heater, and image forming apparatus, heating method... Heater, and image forming apparatus, heating method...

2006-08-08

2006-08-08

Grimley, Arthur T. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S069000, C399S067000

Reexamination Certificate

active

07088935

ABSTRACT:
A fixer (heater) includes a heat roller and a pressure roller pressing each other. The fixer heats a heated material by passing the heated material through a press region where the heat roller and the pressure roller meet. The fixer further includes an external heat roller heating the pressure roller from outside the pressure roller. A transit time taken for any given point on the heated material to pass through the press region is less than or equal to 2.3×10−2sec. The surface temperature, T1 (° C.), of the heat roller and the surface temperature, T2 (° C.), of the pressure roller satisfy T1−T2≦100 (° C.), and preferably satisfy T1−T2≦70 (° C.). The load on the heat roller is reduced, and so is the power consumption.

REFERENCES:
patent: 6389261 (2002-05-01), Fratangelo et al.
patent: 2002/0141795 (2002-10-01), Hirst et al.
patent: 08-179644 (1996-07-01), None
patent: 09-244448 (1997-09-01), None
patent: 2000-338818 (2000-12-01), None
patent: 2002-049265 (2002-02-01), None

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