Fusing apparatus having variable shape fuser roller

Details Fusing apparatus having variable shape fuser roller Fusing apparatus having variable shape fuser roller

1991-12-23

1993-10-12

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355290, 219216, 219469, G03G 1520

Patent

active

052530264

ABSTRACT:
A fusing apparatus for fusing toner images onto a substrate. The fusing apparatus has a generally cylindrical pressure roller, a fuser roller, and a device for applying toner release oil to the surface there of. The fuser roller further includes a first length portion that has a generally cylindrical outer shape for contacting the pressure roller to form a fusing nip through which the substrate can be moved. In order to prevent damage to the surface of the fuser roller, the fuser roller includes a second length portion which lies towards an end of the fuser roller away from the fusing nip and has a generally conical outer shape for preventing contact between the fuser roller and pressure roller.

REFERENCES:
patent: 3106767 (1963-10-01), Fox
patent: 4253392 (1981-03-01), Brandon et al.
patent: 4258648 (1981-03-01), Leising et al.
patent: 4594068 (1986-06-01), Bardutzky et al.
patent: 5130754 (1992-07-01), Hishikawa

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