Electrophotography – Image formation – Fixing
Reexamination Certificate
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.
Kinouchi Satoshi
Sone Toshihiro
Takagi Osamu
Tsueda Yoshinori
Kabushiki Kaisha Toshiba
Ngo Hoang
Patterson & Sheridan LLP
Toshiba Tec Kabushiki Kaisha
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