| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device where the temperature distribution in the shaft direction of a rotary body is uniformized by restraining excessive temperature rise in the paper non-passing area of the rotary body, which realizes the shortening of the rise time of fixing operation and energy saving, and whose configuration is simple. SOLUTION: The fixing device is equipped with a heating rotary body 1 heated by a heating member, a pressure rotary body 2 sliding in contact with the rotary body 1 and forming a fixing nip part between the rotary body 1 and the rotary body 2, and fixes an unfixed toner image on the surface of recording paper to which the unfixed toner image is transferred by heating/pressuring the recording paper while holding and carrying it by the fixing nip part. The device is provided with a heat transfer member 4 capable of contacting with/separating from either the rotary body 1 or 2, and the sliding and contacting state of the member 4 with the rotary bodies 1 and 2 is switched to many stages. COPYRIGHT: (C)2004,JPO
|
