Image heating apparatus and heater for use therein

Details Image heating apparatus and heater for use therein Image heating apparatus and heater for use therein

2007-04-10

2007-04-10

Deb, Anjan (Department: 2858)

Electrophotography

Control of electrophotography process

Control of fixing

C399S334000

Reexamination Certificate

active

11038066

ABSTRACT:
Image heating apparatus capable of preventing an excessive temperature increase in a sheet non-passing area and heater for use in the image heating apparatus including: a substrate, a heat generating resistor formed on the substrate, and first and second electrodes for supplying an electric power to the heat generating resistor. Each of the first and second electrodes has a first area to contact a power supplying connector and a second area provided at an end portion electrically opposite to the first area along a longitudinal direction of the substrate, and the heat generating resistor is provided to electrically connect the second area of the first and second electrode so that when the heater is at a set temperature for an image heating operation a resistance value Rc of the second area, and a resistance value Rt between a portion within the second area of the first and second electrode and electrically closest to the first area satisfy a relation Rc/Rt<=1/30.

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