| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing image failure resulting from a temperature increase of a belt when images are consecutively formed on a plurality of recording materials. SOLUTION: The image forming apparatus includes: an image forming means for forming an image on a recording material; a heating member heating the image formed on the recording material in a nip portion; an endless belt conveying the recording material toward the nip portion formed between itself and the heating member; and a contacting and separating device for bringing the heating member and the belt into the contact with each other and for separating the heating member and the belt from each other. When images are continuously formed on a plurality of recording materials, a separating operation can be executed by the contacting and separating device during a time period after the immediately preceding recording material passes through the nip portion and before the subsequent recording material arrives at the nip portion. Between sheets of paper during the job of consecutive image formation, the pressure belt 10 is separated from a fixing roller 1 by a detaching mechanism 64. This prevents an unnecessary increase in the temperature of the pressure belt 10. COPYRIGHT: (C)2006,JPO&NCIPI
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