Fixing device

Details Fixing device Fixing device

2011-03-29

2011-03-29

Ngo, Hoang (Department: 2852)

Electrophotography

Image formation

Fixing

C399S334000

Reexamination Certificate

active

07917075

ABSTRACT:
To provide a technique for preventing a temperature rise in a non-sheet passing areas in a fixing device. The fixing device includes: a heating rotational member that includes at least one roller and heats a toner transferred on a sheet; a pressing roller that nips and carries the sheet in cooperation with the heating rotational member; a heating device that heats the heating rotational member; and heat pipes arranged, on the inside of at least one of the roller of the heating rotational member and the pressing roller, in ranges on both the sides in an axial direction of the roller from positions closer to the center in the axial direction than both the ends of a minimum sheet passing range in the axial direction of the roller of the nipped and carried sheet to positions further on the outer sides in the axial direction than both the ends of a maximum sheet passing range.

REFERENCES:
patent: 5300996 (1994-04-01), Yokoyama et al.
patent: 2006-154608 (2006-06-01), None
U.S. Appl. No. 12/401,244, Tsueda.

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