Fixing unit having heat roller with two parallel tubular...

Details Fixing unit having heat roller with two parallel tubular... Fixing unit having heat roller with two parallel tubular...

2008-06-10

2008-06-10

Beatty, Robert (Department: 2852)

Electrophotography

Image formation

Fixing

C219S216000, C219S470000

Reexamination Certificate

active

07386265

ABSTRACT:
A fixing unit includes: a heat roller that is rotatably supported and that supplies heat for fixing; and a first and a second tubular heaters that are disposed in parallel in the heat roller along an axis thereof and that each have on an outer circumferential surface thereof one protruding residual fused tip, namely, tip portion. As viewed from a side end surface of the heat roller, the tip portions of the first and second tubular heaters are oriented directly opposite to each other with respect to the connection line connecting centers of the first and second tubular heaters.

REFERENCES:
patent: 3376407 (1968-04-01), Wagner
patent: 4768985 (1988-09-01), Hamai
patent: 6442360 (2002-08-01), Onodera et al.
patent: 6721518 (2004-04-01), Oshida et al.
patent: 2004/0256372 (2004-12-01), Yoshioka et al.
patent: 2004/0264991 (2004-12-01), Yoshikawa
patent: 08-220930 (1996-03-01), None
patent: 08210758 (1996-08-01), None
patent: 08320627 (1996-12-01), None

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