Image forming apparatus, roller, belt, and fixing unit of...

Details Image forming apparatus, roller, belt, and fixing unit of... Image forming apparatus, roller, belt, and fixing unit of...

2007-07-10

2007-07-10

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Fixing

C198S821000, C198S840000, C399S162000, C399S303000, C399S308000, C399S313000

Reexamination Certificate

active

11116354

ABSTRACT:
A tubular roller to support a belt having an inner surface provided with a protruding circumferential edge having a width includes a first portion, a second portion, and a third portion. The first portion has a first outer radius and contacts the inner surface of the belt. The second portion has a second outer radius smaller than the first outer radius of the first portion. The third portion is connected to the first portion with a first vertically extending wall and to the second portion with a second vertically extending wall and has a third outer radius smaller than the second outer radius.

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