Heat roller

Details Heat roller Heat roller

2006-04-11

2006-04-11

Pelham, Joseph (Department: 3742)

Electric heating

Heating devices

Combined with diverse-type art device

C399S333000, C399S334000

Reexamination Certificate

active

07026578

ABSTRACT:
A heat roller having a cylindrical sheet-like heating element having a resistance member embedded into an insulating member. The sheet-like heating element is arranged between an inner tube and an outer tube. The resistance member is formed such that a heating density of the sheet-like heating element is changed in an axial direction of the heat roller. The heating density of the sheet-like heating element at its edge section is greater than that at a center in the axial direction of the heat roller.

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JP62247386A, “Direct Heating Type Toner Image Fixing,” Oct. 1987, Abstract & Figure, Japan.

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