Fixing apparatus

Details Fixing apparatus Fixing apparatus

2007-01-09

2007-01-09

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Responsive to copy media characteristic

C399S328000, C399S335000

Reexamination Certificate

active

10924920

ABSTRACT:
A fixing apparatus includes a magnetic flux generator that generates a magnetic flux. A heater is disposed in the magnetic flux and generates heat by electromagnetic induction to heat a toner image on a medium. A cylindrical selector selects a dimension of the heater in accordance with the width of the medium that extends in a traversing direction perpendicular to the advance direction of the medium. The heater may include at least two heater elements having different lengths that extend in directions substantially perpendicular to the advance direction. The selector selects one of the heater elements in accordance with the width of the medium. The heater may be trapezoidal and mounted on a circumferential surface of the selector, having a width that monotonically increasing in a circumferential direction of the selector. The cylinder rotates to a position where the heater just covers a toner image on the medium.

REFERENCES:
patent: 5907745 (1999-05-01), Azuma et al.
patent: 6185383 (2001-02-01), Kanari et al.
patent: 08-006408 (1996-01-01), None
patent: 08137306 (1996-05-01), None
patent: 2001-265157 (2001-09-01), None

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