Fixing device and image forming apparatus including the same

Details Fixing device and image forming apparatus including the same Fixing device and image forming apparatus including the same

2009-01-12

2011-11-29

Porta, David (Department: 2884)

Electrophotography

Having particular structure

Modular or displaceable

C399S107000, C399S110000, C399S328000, C399S329000, C399S330000, C219S216000

Reexamination Certificate

active

08068765

ABSTRACT:
A fixing device of the present invention is arranged so that: (i) at least both ends of a planar heat-generating member come close to or touch an outer surface of a fixing roller, said both ends being in a circumferential direction when viewed in an axial direction of the fixing roller; and (ii) the planar heat-generating member has, in the vicinity of both the ends, shapes formed gently with respect to the outer surface of the fixing roller when viewed in the axial direction. An almost whole inner surface area of the fixing belt wound around the planar heat-generating member and the fixing roller touches the planar heat-generating member or the fixing roller. The fixing belt is naturally formed, without being distorted at an area where the fixing belt touches the heating member. This allows a fixing device using a planar heat-generating belt type fixing method, which provides a short warm-up time, to be excellent in heat efficiency, consume less power, and have a fixing belt which does not slip easily.

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