Fixing apparatus
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Claims
3. A fixing apparatus according to claim 1, wherein said heat pipe is embedded in a core of said fixing roller, and said core of said fixing roller is produced by extrusion..!.
8. A fixing apparatus according to claim 1, wherein said.Iadd.at least one.Iaddend.heat pipe is at least three in number, and at least one of said heat pipes is embedded in an elastic layer of said pressing roller.
9. A fixing apparatus according to claim 2, wherein all of said heat pipes are provided in parallel with the longitudinal axis of said fixing roller.
10. A fixing apparatus according to claim 2, wherein one of said heat pipes is in parallel with said longitudinal axis of said fixing roller, and the others of said heat pipes are oblique with respect to said longitudinal axis of said fixing roller.
11. A fixing apparatus according to claim 8, wherein said heat pipes are supported by support means outside said elastic layer.
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Type: Grant
Filed: Apr 5, 1996
Date of Patent: Mar 2, 1999
Assignee: Ricoh Company, Ltd. (Tokyo)
Inventors: Hiroshi Yokoyama (Yokohama), Yutaka Fukuchi (Yokohama), Atsushi Arai (Ichikawa), Masahiko Sato (Funabashi), Toshiaki Higaya (Kawasaki), Jun Okamoto (Tokyo)
Primary Examiner: S. Lee
Law Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Application Number: 8/628,270
International Classification: G03G 520;
